C O N T E N T S
O.J.Power
Safety Guidelines
Choosing the Right Jack and Pump
Jack & Pump Select Guidelines

O.J.Standard Accessories
1~3
4~5
6~7

Power Jacks 72MPa
E series
E type Power Jacks S(Spring return) type
E type Power Jacks H(Hydraulic return) typeET type Power Jacks H(Hydraulic return) typeEL type Low Profile Jacks S(Spring return) typeEF type Flat Jacks S(Spring return) typeEC type Hollow Jacks S(Spring return) typeEC type Hollow Jacks H(Hydraulic return) typeEC type Hollow Jacks H(Hydraulic return) typefor Precast Concrete Construction
LC type Hollow Aluminum Jacks H (Hydraulic return) type
ETC type Twin-jack S (Spring return) type
AE type Spatter Resistant Jacks S(Spring return) type
LJA series
LJA type Aluminum Jacks S(Spring return) type
LJA type Aluminum Jacks A(Gas return) type
JN/JFN series (Made-to-Order)
JN type Jacks with Safety Nut S(Spring return)/
H(Hydraulic return) type
JFN type Low Profile Jacks with Safety Nut
S(Spring return) typeOC series (Made-to-Order)
OCLP type Low Profile Jack with Safety Nut G(Gravity return) type
OCLSG type High Tonnage Jacks G(Gravity return) type
OCLRG type High Tonnage Jacks G(Gravity return) type
OCLL type High Tonnage Jacks G(Gravity return) type
OCLS type High Tonnage Jacks G(Gravity return) type
Water pressure jacks & water pressure stick jackSA type Water Pressure Jacks S(Spring return) type
SJW type Water Pressure Stick Jack
Water pressure hand pump
TWAS type Water Hand Pump & Accessories
Accessories for jacks
Flanges for E series Jacks
Bases for E series Jacks
Piston Base for E series Jacks
Screw-on type saddle for E series Jacks
Clevis eye(Single)for E series Jacks
Clevis eye(Double)for E series Jacks
Accssories for E series clevis
E series list of parts drawings
E series and SA Water pressre jacks list of parts drawings

8~13
14~16
17~18
19
20
21
22
23
24
24
25
26
26
27
28

29
30~31
32~33
34~35
36~37
38
38
39
40
40
41
41
42
43
44
45~47
48

Hand Pumps 72MPa
TWA type Hand Pumps for single-acting jacks(low pressure relief)
49~50
TWA type Hand Pumps for single-acting jacks(low pressure unload)
51
TWAD type Hand Pumps for double-acting jacks(low pressure relief)
52~53
TWAD type Hand Pumps for double-acting jacks(low pressure unload)
54
LTWA type Lightweight Hand Pumps for single-acting jacks
55
FPA type Foot Pumps for single-acting jacks
55
Hand Pump Parts Drawings
56
Hand Pump Parts Lists
57
Hand Pump Accessories
58~59
Portable Battery Pumps
PBP type Portable Battery Pumps for single-acting Jacks
60
Air booster pump
AB type Air Booster Pumps for single-acting jacks
61

Electric Pumps 72MPa
PSP type low-noise compact electric hydraulic pumps
QH type Electric Pumps
AH type Electric Pumps
QH type Custom Build Pump
QH type Custom Build Pump examples
GHA type Air driven Pumps
Inverter Pumps

62~63
64~71
72
73~74
75
76
77~78

Power Jacks & Pumps 100MPa・200MPa・300MPa
100MPaTWAX type Hand Pumps
XEX type Compact Electric Pumps
GX type Electric Pumps
Nylon Hoses
CX type Quick-lock Couplers
200MPaZ type Power Jacks S(Spring return) type
Z type Power Jacks H(Hydraulic return) type
Z type Low Profile Jacks G(Gravity return) type
Propeller Setting Machines
ZR type Ultraslim Power Jacks
TWAZ type Hand Pumps for Single-acting Jacks
TWAZ type Hand Pumps Parts Drawing & Lists
NEXZ type Compact Electric Pumps
VZ type Electric Pumps
Valves & Accessories
BZ type Couplers
CZ type Quick-lock Couplers
High pressure nylon hose
300MPaTWAU type Hand Pumps for Single-acting Jacks

94
94
95
95
95
96
97
98
98
99
100
100
101
101
102
103
103
104
104

Hydraulic Tools
Shop Press
Pipe Benders
Gear Pullers
Hydraulic Jacks with Toe
Casting Gate Crusher
Hydraulic Pulling Jacks
Hydraulic Wedge Jack

105
106
107
108
108
109
109

Applied Equipment (Made-to-order)
Derailment Restoration Jacks
Lifting Jacks
Ship Bottom Jack-up Machine
Hull Block Adjuster

110
111
112
112

Mechanical Jacks
Guidelines for Safe Use
Journal Jacks
Traversing Beds
Safety Bases
Aluminum Jacks
JJ・AJ Parts Lists
Journal Jacks with Toe
Mechanical Pulling Jacks
Cable Jacks

113~114115~116
117
117
118
119
120
120
121

Worm Gear Jacks
Overview
Worm Gear Jack Coding
WJ type Worm Gear JackWJM type Worm Gear Jacks
Technical Data

122
123
124~126
127~128129~133

Hydraulic Press

High Pressure Valves
O.J. High Pressure Valves List
Directional Control Valves(Manual switching valves)
Solenoid Valves(Electromagnctic switching valves)
High Pressure Stack Valve List
High Pressire Stack Valves Circuit Application Example

88
88
89
89
89
90
91
92
92
93

Pressure Gauges
Gauge Adapters / Gauge Cocks
Pressure Switches
Falling Prevention Valve
Safety Valve for Hydraulic Jacks
B type Couplers
C type Quick-Lock Couplers
High Pressure Rubber Hoses
High Pressure Nylon Hoses
Manifolds

79~80
81~82
83~84
85
86~87

SPD Series

134~135

Usage Examples
Usage examples

136~145

Safety Guidelines
PRECAUTIONS• Be sure to follow the 3 kinds of precautions identified below for your safety is highly concerned.

DangerThis indicates matters that will lead to imminent risk of death or serious injury if
incorrectly handled.

Warning

This indicates matters that may lead to imminent risk of death or serious injury if
incorrectly handled.

CautionThis indicates matters that may lead to injury or material damage if incorrectly
handled.

O.J. Power

Please read instruction manual carefully prior to operate. Do not operate without fully comprehension.
Pay attention to every warning label and plate on the product.
「Seperate-type hydraulic jack handbook」(No.JOHS-124) from JOHS(Japan Fluid Power Association Standard)is available on
request.

※The dangers, warnings and cautions identified herein do not cover every kind of situations. Please be sure to read every
instruction manuel carefully and fully comprehend its contents prior to operation. Safety First!
※For safety use, please be sure to comply with the following rules.
• Industrial Safety and Health Act• Fire Service Act• JIS B8361 Hydraulic System Common Rules

1.Cautions on choosing equipment
CautionChoose a jack with sufficient lifting capacity (use 70~80% of rated capacity).

Warning

When using multiple jacks, uneven load may occur. For the sake of safety, have extra capacity(use 50~70% of rated capacity.)

CautionSome single-acting jack models may get rusty when used outdoors, which may result in malfunctions.
For outdoor applications, inner parts plated is available on request at the time of manufacture.

Warning

If you plan to use an E- or ET-type jack several tens of thousands of times at 70~80% of rated capacity, please discuss
your operating conditions with us beforehand. Keep in mind that durability may be subject to operating conditions (springand sealing packings are considered consumable parts). Also consult with us regarding extreme high-frequency usage
cycles.

Warning

Scope of jack operating speed should be considered as follows;
For general industrial use, up to 300mm/sec with no load and up to 30mm/sec with load.

CautionOperate jack within the stroke limit to avoid blowout.

Warning

Select jack, pump, hose and fittings that can withstabd the system’s max. working pressure.

Warning

Consider your requirements when choosing a jack, pump, and hose. Make sure the specifications match.

2.Cautions on product handling
CautionTo prevent injuries, use appropriate protective equipment for the job.

CautionThe equipment is heavy, so be aware of your posture. Take care not to injure your backor pinch your hands when lifting, carrying, or using the equipment.

Caution

Do not stand on, drop, strike, or apply external force to the equipment. By doing so willcause malfunctions, oil leaks, or other damage.

CautionTo prevent accidents, immediately and thoroughly wipe up any leaked oil. Slippery
equipment is easy to fall off. Oil on the floor can cause someone to slip and fall.

Do not stand on, drop, strike, or apply
external force to the equipment.

1

O.J. Power

3.Cautions when connecting and disconnecting equipment
Warning

Installation, wiring, and removal must be carried out by a qualified specialist, such asa licensed engineer or someone who has received our service training.

Warning

Disconnect power source before beginning of service. Check and make sure all motors
are off. Release any residual pressure in the equipment.

Warning

Turn off the power from the source before beginning any electrical work.

Warning

Do not block the hydraulic circuit. When connecting hoses, make sure couplings are tight.

Warning

Do not block the return circuit of a double-acting jack.

Warning

Do not use hoses that are worn out because there is a risk they may burst or leak.

Caution

Do not use hoses to carry or move hydraulic equipment.

DangerDo not loosen couplings, plugs, or hoses when the equipment is pressurizing unless a stop valve is installed.
Without a stop valve, falling loads, spraying oil, flying parts and other hazards may occur.

Do not use hoses to carry or move hydraulicequipment.

4.Cautions and warnings for installation2

Warning

Receive the load vertically on the center of the jack. A load-bearing jack can tip over. Always install it on a solid base andproperly face the jack in the direction of gravity. Do not use with extension pipes etc. in unstable conditions.

Warning

Never put yourself under a load until safety is guaranteed. A load-bearing jack can tip over. Use a jack with a safety nut
or replace the jack with cribbing or blocking when supporting a load for a long period.

Warning

Make sure the surfaces above and below the jack will not deform. Remember that a load-bearing
jack can tip over. If necessary, use metal plates to widen the pressure-bearing surfaces.

Warning

Receive load equally and vertically with entire area of the top and bottom of the jack.
If necessary, install a tilting saddle.

Warning

Install jack on solid base and properly support the jack. As much as possible, ensurethat wind, shock, vibration, and other external forces cannot make the jack tip over.

Warning

Do not apply inclined or impact loads to jack. The jack may tip over when lateral forces
are applied.
In these cases, always use an anti-tip device.

Warning

Install relief valve on hydraulic pump to prevent pump pressure from exceeding the jack’s rated pressure.

Warning

Install appropriate safety valves, such as fall-prevention or pilot-check valves, to prevent theload from falling due to damaged hose.

Warning

Take special care not to contaminate hydraulic oil. The load retaining valve and other parts may
be damaged if the oil gets contaminated.

Warning

Use stabilizing material under the base and between jack and load to
avoid slipping.

Warning

Install jack, hoses, and fittings in a safe position with enoughclearance where objects will not fall on hoses.
Do not twist, pull, or bend hoses at extreme angles. Do not weld near hoses. Do notinstall hoses in areas where they will conduct heat.

Receive load equally with entire area of the
top and bottom of the jack.

Do not not drop anything on the hoses.

Warning

Perform all work in a safe position. Ensure enough space to perform operations,adjustments, or installation. Avoid installing equipment in place where maintenance is difficult.

Warning

Be sure to bleed any air that enters the equipment.

Warning

Pressurized oil is dangerous. If highly pressurized oil sprays from hydraulic equipment, there
is a possibility it may penetrate skin, resulting in serious injury. This type of injury
requires immediate medical care.

Warning

Keep the work area around jacks clean and orderly.
Keep job site from getting slippery due to oil leaks or spills.
Be careful when connecting or disconnecting hoses and couplings.

Warning

Please do not use a damaged, modified or ill-maintained jack.

Danger

If the directional control valve is swtiched to the return circuit when the jack is
supporting a load, the load may fall rapidly.
Use a flow-control or similar valve in the circuit to lower the load gradually.

O.J. Power

Warning Before operating, confirm chain of operating command for lifting or lowering loads using Jacks.

5.Cautions and warnings during operation
DangerNever use unprotected jacks in areas where explosions or fires may occur.

Warning

To prevent entanglement accidents when using a motorized pump, make sure the rotary shaft has a protective cover.

Warning

Stop operations immediately if any problem occurs, such as oil leaks, smoke, or unusual noises.
Take corrective action or injury, fire, and other damage may occur.

Caution

Before using the equipment, make sure that all wiring and hoses are in order.
Also check for loose joints or connections.

Caution

Do not operate beyond specification scope that listed in our catalog, drawings,
or specification sheets. Otherwise, malfunction or injury may occur.

CautionUse appropriate hydraulic oil. Monitor the condition of the oil and change
it when necessary.

CautionLoosen air vent plug before operating pump.

Warning

Operate equipment in a safe place away from the load.

Operate equipment in a safe place awayfrom the load.

6.Cautions and warnings on use of multiple jacks
Warning

When using multiple jacks, unbalanced loading may occur.
For the sake of safety, choose jacks with extra capacity (use 50~70% of rated capacity.)

Warning

Receive the load vertically in the center of the jack. A load-bearing jack can tip over. Always install it ona solid base and properly face the jack in the direction of gravity. If necessary, install a tilting saddle.

Danger

Be careful when lowering a load because it may become unbalanced. This may cause
jacks to tip or become overloaded, which can result in damage.

DangerLateral movement of a load supported by multiple jacks is very dangerous. Make sure tofollow a pre-determined order and the instructions of an experienced operator.

CautionFor maximum safety when using multiple jacks, have a pre-determined order of operation,a clear communication system, and established commands before beginning operations.
Pay attention to each jack’s stroke distance and follow the instructions of anexperienced operator who is monitoring the load’s balance and center of gravity.

Please do not operate beyond capacity ofjacks.

7.Cautions and warnings on proper maintenanceWarning

Never modify the equipment yourself. Modified equipment is dangerous.

Caution

Do not disassemble and reassemble equipment unnecessarily. Otherwise, accidents or breakdowns may
occur. Necessary maintenance must be carried out by a qualified specialist, such as a licensed
engineer or someone tho has received our service training.

Caution

Pay attention to the surrounding environment when transporting or storing equipment.
Dust, ambient temperature, moisture and other factors can affect the equipment.

CautionWhen storing equipment for a long period, seals may need to be replaced.

CautionTo keep equipment in working order, periodic checks (once per month) are recommended.

໐Cautions and warnings cannot cover every possible circumstance.
Read instructions carefully and always think about safety first.

3Choosing the Right Jack and Pump

O.J. Power

1.Hydraulic Jack
（1）Capacity• Please select jack with extra 20～30％ capacity than required.
• Moreover, when operating multi-connecting jacks, unbalanced load might occur.
Please select jack with extra capacity than required.

（2）Stroke• Please select jacks with extra stroke than required.

（3）Return Method

Spring return• Piston rod is returned by an internal spring.
• The piston rod may not return easily when used in an inverted or horizontal position.
This can also occur if the piston rod is equipped with attachments or fittings.

Single-acting
Gravity return• Piston rod is returned by an external force, such as weight or gravity.

Gas return• Piston rod is returned by sealed, compressed air.

Notices）Regarding above-mentioned 3 types:• Length of piping can make it difficult for a single-acting jack’s piston rod to return.
• Return speed is not constant.
• No pulling force is available.

Double-acting

Hydraulic return• Piston rod is returned by oil pressure. Useful when a pulling force or a quick return speed
are required.
• Appropriate for inverted or horizontal use, or when piston rod is equipped with
attachments or fittings.
• Approximate pulling force is 1/2 of pushing force. Refer to individual specs.

4（4）Cautions• Jacks can be used in horizontal, diagonal, vertical, or inverted positions but load
movement must be parallel with piston rod movement. Refer to individual specs
for allowable lateral load.

（5）Scope of jackoperating speed• For general industrial use, up to 300mm/sec with no load and up to 30mm/sec
with load.
• For raising and lowering heavy loads, up to 5mm/sec is suitable.
• Consult with us for applications beyond this range.

（6）Frequency• For high-frequency usage cycles, use a high-powered Type jack.

（7）Operating
Environments• Use jacks within an ambient temperature range of -5～40℃.
Seals in standard jacks may withstand a temperature range of -10～80℃.
• Standard jacks are made for indoor use. Consult with us for outdoor
applications.

（8）Allowable Lateral Load

• Allowable lateral load is listed in the features section of each jack. Make sure tocheck it.

2.Hydraulic Pump
• Select a suitable pump. Make sure the rated pressure of the pump and jackmatch. Otherwise, the jack may be damaged or its lifting ability may be affected.

（2）Oil Delivery• Select a pump according to your required lifting speed.

（3）Useable Oil• Make sure the pump’s usable oil matches the jack’s required amount.
• Remember to include hosing in your calculations.

O.J. Power（1）Working Pressure＜Calculating necessary oil volume＞
Q : Total amount of required oil (ℓ)
n : number of jacks (pcs)q : oil capacity per jack (㎖ )α : oil capacity for hosing (㎖ )※Regarding hand and foot pump, we recommend choosing pump wiht usable oil of Q＋extra; Regarding electric pump,considering the raising of oil temperature, we recommend choosing pump with usable oil that is 3 times of Q.

（4）Working Fluid• Please choose recommending working oil of pump accordingly
Manufacturer
Showa Shell Sekiyu K. K.
Exxon Mobil Corporation
Idemitsu Kosan Co., Ltd.
JX Nippon Oil & Energy Corporation
Cosmos Oil Co., Ltd.

（5）Types and Features

Viscosity Grade
ISO−Ｌ−HM VG32
ISO−Ｌ−HV VG15
Tellus Oil G32
Tellus Oil T15
Mobile DTE32
mobile Oil DTE11M
Daphne Hydraulic Fluid 32
Super Hydrau 15X
Super Highland 32
Highland 15
Cosmo Hydrau AW32
Cosmo Hydrau ＨＶ22

• Hand Pump ：By manually leveling handle bar repeatedly to deliver oil.
• Foot Pump

：By stepping on foot pedal repeatedly to deliver oil.

• Air Booster：Pump that uses air compressor to create hydraulic force.
Approx. 0.7MPa air pressure generates 70MPa hydraulic pressure• Air Pump

：Pump that uses air motor instead of electric motor for hydraulic pump.
Best for anti-explosion environments.

• Electric Pump：Standard pump that uses electric motor as driven force.
From portable compact type to stationary type.
Please select accordingly to speed and application.

3.Hose• Rubber and nylon hose for your selection. Weight and min. bend radius differ.
• Hose type is determined by a pump’s oil delivery. Choosing a hosewith the wrong oil flow will affect a jack’s speed.

4.Coupler（1）Attaching• Make sure the oil delivery rate of pump and couplers match.
• Wrap coupler threads with sealing tape before screwing into the port.
• Clean coupler before connecting.

（2）Connecting• Dirty couplers may contaminate working oil.
• Tighten couplers completely until the male and female ends meet.
Poor connections may make it difficult for the piston rod to return.
• De-pressurize the system before connecting or disconnecting couplers.

Correct

Error
Gap

No gapGap

5

Jack & Pump Select Guidelines

O.J. Power• This chart below will help you determine which jack and pump to select.

Application

Jack return method

Pump Type

Combination No.

Hand pump
Strengthen/bend
Steel materials

Spring return
type
Non-operatable
upside down with
jig mounted.

Foot pump
Portablebattery pump
Air driven pump
Electric pump

Cut/drill

Hand pump

Steel materials
Gravity reture type
（Force return type）

Push-in/Cannot be used
upside down.

Pull-out

Hydraulic retuen
type

heave loads

Portablebattery pump
Air driven pump
Electric pumpbearing etc.

MovingFoot pump

Hand pump

Air driven pump
Operatable with jig
mounted.

Electric pump

STEP1

STEP2

STEP3

STEP4

Firstly confirm
your application.

Secondly selectjack return
method.

Then choose yourpump accordinly.

Confirm thenumber in thenext page!

GO！
6

Hand pumps
Model

Item

Features of pump

TWAZ type

200MPa low/high two stage
pump

TWAU type

300MPa low/high two stagepump

TWAS type

Low/high pressure two stage
pump made of stainless steel

TWA type
LTWA type

Suitable jackSingle acting jack(Spring/gravity return)

O.J. PowerTWAX type

Low/high pressure twostage pump
Low/high pressure twostage pump made ofaluminum
100MPa low/high two stagepump

SA type water pressurejack(Spring return)Hand pumps
Model

Item

TWAD typeFeatures of pump

Suitable jack

Low/high pressure two stage
pump with control valve

Double acting jack(Hydraulic return)

Foot pumps
Model

Item

FPA type

Features of pump

Suitable jackFoot operated pumpSingle acting jack(Spring/gravity return)Portable battery pumps
Model

Item

PBP type

Features of pump

Suitable jackBattery driven pumpSingle acting jack(Spring/gravity return)Air booster pumps
Model

Item

AB typeFeatures of pump

Suitable jackAir driven pumpSingle acting jack(Spring/gravity return)

Air driven pumps
Model

Item

GHA type

Features of pump

Suitable jackAir driven hydraulic pumpSingle acting jack(Spring/gravity return)anddouble acting jack(hydraulicreturn)Electric pumps
Model

Item

PSP type
NEXZ type
QH type
GX typeFeatures of pump

Suitable jackSingle acting jack
220V Power source. Loght wight(Spring/gravity return)and double
and compact pump for 72MPa.
acting jack(hydraulic return)
220V Power source. Loght wightSingle acting jackand compact pump for 200MPa.
(Spring/gravity return)Single acting jack0.4～3.7kW pump
(Spring/gravity return)and double（380V Power source）
acting jack(hydraulic return)Single acting jack
100MPa type pump
(Spring/gravity return)

AH type5.5～15kW pump
（380V Power source）

VZ type

200MPa type pumpSingle acting jack(Spring/gravity return)anddouble acting jack(hydraulic return)7

O.J. Power® / E series 72MPa
Model number

E type Power Jacks 50kN

E typeCapacity (ton)S (Spring return) type

Spring return (S)Stroke (cm)Features• Metric mounting threads in the base.
• Metric mounting threads on cylinder collar.
• Designed to be lightweight and compact.
• Allowable lateral load is 1/20 of lifting capacity.

Power jacks• Piston rod is plated with hard chrome.
• Piston rod seal protects against dirt (except E5S1.5).
• Push-in saddle. Contact us for other saddles.
• Inverted applications require a fixed saddle.

Dimensional drawing
Dimensional drawing

Applicable models

Specifications
Model
Items

Unit

CapacitykN（ton）

StrokeClosed height(H)

Cyl. outer dia.

(D)

Cyl. bore dia.

(d)Shown above

Cyl. effective area
Oil capacity
Weightapprox.

Collar screw dia. (a)Collar screw length (j)Rod screw dia. (b)Rod screw length (k)Base screw dia. (c)Shown above(s)

Shown above

Rod dia.

(f)

Saddle dia.

(o)Port size(m)(t)
Height to coupler (L)Hand pump
Pumps
applicable Electric pump
Included coupler

8

PSP or QH1/2

O.J. Power® / E series 72MPa
Model number

E type Power Jacks 100kN

E typeCapacity (ton)S (Spring return) type

Spring return (S)Stroke (cm)Features• Piston rod is plated with hard chrome.
• Piston rod seal protects against dirt.
• Push-in saddle. Contact us for other saddles.
• Inverted applications require a fixed saddle.

• Metric mounting threads in the base.
• Metric mounting threads on cylinder collar.
• Designed to be lightweight and compact.
• Allowable lateral load is 1/20 of lifting capacity.

Power jacks

Dimensional drawing

Dimensional drawing

Applicable models

Coupler is parallelto the base.

Specifications
Model
Items

Unit

CapacitykN（ton）

StrokeClosed height(H)

Cyl. outer dia.

(D)

Cyl. bore dia.

(d)Cyl. effective area
Oil capacity
Weightapprox.

Collar screw dia. (a)Collar screw length (j)Rod screw dia. (b)Rod screw length (k)Base screw dia. (c)(s)
Rod dia.

(f)

Saddle dia.

(o)Port size(m)(t)
Height to coupler (L)Hand pump
Pumps
applicable Electric pump

PSP or QH1/2

Included coupler

9

O.J. Power® / E series 72MPa
Model number

E type Power Jacks 150kN

E typeCapacity (ton)S (Spring return) type

Spring return (S)Stroke (cm)Features• Metric mounting threads in the base.
• Metric mounting threads on cylinder collar.
• Designed to be lightweight and compact.
• Allowable lateral load is 1/20 of lifting capacity.

Power jacks• Piston rod is plated with hard chrome.
• Piston rod seal protects against dirt.
• Push-in saddle. Contact us for other saddles.
• Inverted applications require a fixed saddle.

Dimensional drawing

Dimensional drawing

Applicable models
Applicable models

Specifications
Model
Items

Unit

CapacitykN（ton）

StrokeClosed height(H)

Cyl. outer dia.

(D)

Cyl. bore dia.

(d)Cyl. effective area
Oil capacity
Weightapprox.

Collar screw dia. (a)Collar screw length (j)Rod screw dia. (b)Rod screw length (k)Base screw dia. (c)(s)
Rod dia.

(f)

Saddle dia.

(o)Port size(m)(t)
Height to coupler (L)Hand pump
Pumps
applicable Electric pump
Included coupler

10

PSP or QH1/2

O.J. Power® / E series 72MPa
Model number

E type Power Jacks 230kN

E typeCapacity (ton)S (Spring return) type

Spring return (S)Stroke (cm)Features• Piston rod is plated with hard chrome.
• Piston rod seal protects against dirt.
• Push-in saddle. Contact us for other saddles.
• Inverted applications require a fixed saddle.

• Metric mounting threads in the base.
• Metric mounting threads on cylinder collar.
• Designed to be lightweight and compact.
• Allowable lateral load is 1/20 of lifting capacity.

Power jacks

Dimensional drawing

Dimensional drawing

Applicable models
Applicablemodels(Coupler is parallelto the base.)

Specifications
Model
Items

Unit

CapacitykN（ton）

StrokeClosed height(H)

Cyl. outer dia.

(D)

Cyl. bore dia.

(d)Cyl. effective area
Oil capacity
Weightapprox.

Collar screw dia. (a)Collar screw length (j)Rod screw dia. (b)Rod screw length (k)Base screw dia. (c)(s)
Rod dia.

(f)

Saddle dia.

(o)Port size(m)(t)
Height to coupler (L)Hand pump
Pumps
applicable Electric pump

PSP or QH1/2

Included coupler

11

O.J. Power® / E series 72MPa
Model number

E type Power Jacks 300kN∙500kN

E typeCapacity (ton)S (Spring return) type

Spring return (S)Stroke (cm)Features• Designed to be lightweight and compact.
• E30 models have a push-in saddle; E50 models use a bolt-on type.
• Inverted applications require a fixed saddle.
• Allowable lateral load is 1/20 of lifting capacity.

Power jacks• Piston rod is plated with hard chrome.
• Piston rod seal protects against dirt.
• Metric mounting threads in the base.
• Metric mounting threads on the cylinder collar.

Carry ring

Dimensional drawing

Dimensional drawing

HandleApplicable models
Applicable models

With handle
With handle
With carry ringSpecifications
Model
Items

Unit

CapacitykN（ton）

StrokeClosed height(H)

Cyl. outer dia.

(D)

Cyl. bore dia.

(d)Cyl. effective area
Oil capacity
Weightapprox.

Collar screw dia. (a)Collar screw length (j)Rod screw dia. (b)Rod screw length (k)Base screw dia. (c)(s)
Rod dia.

(f)

Saddle dia.

(o)Port size(m)(t)
Height to coupler (L)Hand pump
Pumps
applicable Electric pump
Included coupler

12

PSP or QH1/2

QH1

TWAー4

O.J. Power® / E series 72MPa
Model number

E type Power Jacks 700kN∙1000kN

E typeCapacity (ton)S (Spring return) type

Spring return (S)Stroke (cm)Features• Piston rod is plated with hard chrome.
• Piston rod seal protects against dirt.
• Bolt-on saddle.
• Metric mounting threads in the base.

• Metric mounting threads on cylinder collar.
• Designed to be lightweight and compact.
• Allowable lateral load is 1/20 of lifting capacity.

Power jacks

Dimensional drawing

Dimensional drawing

Applicable models

Applicable models

Specifications
Model
Items

Unit

CapacitykN（ton）

StrokeClosed height(H)

Cyl. outer dia.

(D)

Cyl. bore dia.

(d)Cyl. effective area
Oil capacity
Weightapprox.

Collar screw dia. (a)Collar screw length (j)Rod screw dia. (b)Rod screw length (k)Base screw dia. (c)(s)
Rod dia.

(f)

Saddle dia.

(o)Port size(m)(t)
Height to coupler (L)Hand pump
Pumps
applicable Electric pump

TWAー2

TWAー4

QH1

TWAー2

TWAー4

Included coupler

13

O.J. Power® / E series 72MPa
Model number

E type Power Jacks 50kN∙100kN

E typeCapacity (ton)H (Hydraulic return) typeHydraulic return (H)Stroke (cm)Features• Pulling force is approx. 1/2 of pushing force.
• Metric mounting threads in the base.
• Metric mounting threads on cylinder collar.
• Allowable lateral load is 1/20 of lifting capacity.

Power jacks• Piston rod is plated with hard chrome.
• Piston rod seal protects against dirt.
• Cap included.
• Double-acting push & return jack.

Dimensional drawing

Dimensional drawing

Applicable models

Applicable models

Specifications
Model
Items

Unit

CapacitykN（ton）
kN（ton）

Pulling force
StrokeClosed height(H)

Cyl. outer dia.

(D)

Cyl. bore dia.

(d)Cyl. effective area
Oil capacity
Weightapprox.

Collar screw dia. (a)Collar screw length (j)Rod screw dia. (b)Rod screw length (k)Base screw dia. (c)Length of base thread (n)Rod dia.

(f)

Cap dia.

(o)
(t)
(g)

Port size(m)

Height to coupler (L)Distance between ports (P)Hand pump
Pumps
applicable Electric pump
Included coupler

14

TWADー0.7
PSP or QH1/2

O.J. Power® / E series 72MPa

E type Power Jacks 200kN∙300kN
H (Hydraulic return) type

Model number
E typeCapacity (ton)Hydraulic return (H)Stroke (cm)Features• Piston rod is plated with hard chrome.
• Piston rod seal protects against dirt.
• Cap included for E20; E30 uses push-in saddle.
• Inverted applications require a fixed saddle.
• Contact us if a screw-on saddle is required.

• Double-acting push & return jack.
• Pulling force is approx. 1/2 of pushing force.
• Metric mounting threads in the base.
• Metric mounting threads on cylinder collar.
• Allowable lateral load is 1/20 of lifting capacity.

Power jacks

Dimensional drawing
Dimensional drawing

Applicable models

Applicable models
With handle
With handle

Specifications
Model
Items

Unit

kN（ton）
kN（ton）

Capacity
Pulling force
StrokeClosed height(H)

Cyl. outer dia.

(D)

Cyl. bore dia.

(d)Cyl. effective area
Oil capacity
Weightapprox.

Collar screw dia. (a)Collar screw length (j)Rod screw dia. (b)Rod screw length (k)Base screw dia. (c)Length of base thread (n)Rod dia.

(f)

Cap dia.

(o)
(t)
(g)

Port size(m)

Height to coupler (L)Distance between ports (P)Hand pump
Pumps
applicable Electric pump

TWADー0.7

Included coupler
Note) Allowable lateral load of model number marked

TWADー2PSP or QH1/2

TWADー2

is 1/40 of lifting capacity.

15

O.J. Power® / E series 72MPa
Model number

E type Power Jacks 500kN∙700kN

E typeCapacity (ton)H (Hydraulic return) typeHydraulic return (H)Stroke (cm)Features• Pulling force is approx. 1/2 of pushing force.
• Metric mounting threads in the base.
• Metric mounting threads on cylinder collar.
• Allowable lateral load is 1/20 of lifting capacity.

Power jacks• Piston rod is plated with hard chrome.
• Piston rod seal protects against dirt.
• Push-in saddle. Contact us for other saddles.
• Inverted applications require a fixed saddle.
• Double-acting push & return jack.

Dimensional drawing

Dimensional drawing

Carry ring

HandleApplicable models

Applicable models

With handle
With carry ringBushing + B-9J
Bushing + B-9J

With carry ringSpecifications
Model
Items

Unit

kN（ton）
kN（ton）

Capacity
Pulling force
StrokeClosed height(H)

Cyl. outer dia.

(D)

Cyl. bore dia.

(d)Cyl. effective area
Oil capacity
Weightapprox.

Collar screw dia. (a)Collar screw length (j)Rod screw dia. (b)Rod screw length (k)Base screw dia. (c)Length of base thread (n)Rod dia.

(f)

Saddle dia.

(o)Port size(m)(t)
Height to coupler (L)Distance between ports (P)Hand pump
Pumps
applicable Electric pump

TWADー2

TWADー4

TWADー6.5
QH1 or QH2

Note) Allowable lateral load of model number marked

16

QH2
Bushing

Included coupler
is 1/40 of lifting capacity.

QH3

O.J. Power® / E series 72MPa

Model number

ET type Power Jacks 500kN∙1000kN∙2000kN

ET type
Capacity (ton)H (Hydraulic return) typeHydraulic return (H)Stroke (cm)Features• Piston rod is plated with hard chrome.
• Piston rod seal protects against dirt.
• Cap included.
• Double-acting push & return jack.

• Pulling force is approx. 1/2 of pushing force.
• Metric mounting threads on cylinder collar.
• Allowable lateral load is 1/20 of lifting capacity (except 500 ∙ 1000 stroke).

Power jacks

Dimensional drawing

Applicable models※No carry rings on ET100H5

Specifications
Model
Items

Unit

kN（ton）
kN（ton）

Capacity
Pulling force
StrokeClosed height(H)

Cyl. outer dia.

(D)

Cyl. bore dia.

(d)Cyl. effective area
Oil capacity
Weightapprox.

Collar screw dia. (a)Collar screw length (j)Rod screw dia. (b)Rod screw length (k)Rod dia.

(f)

Head dia.

(o)
(t)
(g)

Port size(m)

Height to coupler (L)Distance between ports (P)Hand pump
Pumps
applicable Electric pump

QH1 or QH2

TWADー4
QH2

TWADー10

QH3

Included coupler
Note) Allowable lateral load of model number marked

1 is 1/30 of lifting capacity and2 is 1/40 of lifting capacity.

17

O.J. Power® / E series 72MPa

ET type Power Jacks 3000kN∙500kN∙10000kN

Model number
ET type
Capacity (ton)H (Hydraulic return) typeHydraulic return (H)Stroke (cm)Features• Pulling force is approx. 1/2 of pushing force.
• Metric mounting threads on cylinder collar.
• Allowable lateral load is 1/20 of lifting capacity (except 500 ∙ 1000 stroke).

Power jacks• Piston rod is plated with hard chrome.
• Piston rod seal protects against dirt.
• Cap included.
• Double-acting push & return jack.

Dimensional drawing

Specifications
Model
Items

Unit

CapacitykN（ton）
kN（ton）

Pulling force
StrokeClosed height(H)

Cyl. outer dia.

(D)

Cyl. bore dia.

(d)Cyl. effective area
Oil capacity
Weightapprox.

Collar screw dia. (a)Collar screw length (j)Rod screw dia. (b)Rod screw length (k)Rod dia.

(f)

Head dia.

(o)
(t)
(g)

Port size(m)

Height to coupler (L)Distance between ports (P)Hand pump
Pumps
applicable Electric pump

QH5

AH20 or AH40

Included coupler
Note) Allowable lateral load of model number marked

18

1 is 1/30 of lifting capacity and2 is 1/40 of lifting capacity.

O.J. Power® / E series 72MPa

EL type Low Profile Jacks

Model number
EL type
Capacity (ton)S (Spring return) type

Spring return (S)Stroke (cm)Features• Piston rod is plated with hard chrome.
• Piston rod seal protects against dirt.
• Flat, compact design.
• Great for fine adjustments in confined areas
or machinery installation in extremely narrow spaces.

• Receive load over the entire area of piston head and base, as shown below.
Lateral loads may cause damage to the jack.

Power jacks

Receive load
uniformly

Dimensional drawing
Dimensional drawing

ApplicablemodelsApplicablemodelsCarry ring

(Coupler is parallel to the base.)

Specifications
Model
Items

Unit

kN（ton）

Capacity
StrokeClosed height(H)

Cyl. outer dia.

(D)

Cyl. bore dia.

(d)Cyl. effective area
Oil capacity
Weightapprox.
(f)

Rod dia.

(g)
Port size(m)

Height to coupler (L)Hand pump
Pumps
applicable Electric pump

PSP or QH1/2

Included coupler
Note) Receive load vertically to avoid lateral load.

19

O.J. Power® / E series 72MPa

EF type Flat Jacks

Model number
EF type
Capacity (ton)S (Spring return) type

Spring return (S)Stroke (cm)Power jacks

Features• Piston rod is plated with hard chrome.
• Flat, compact design.
• Great for fine adjustments in confined areas
or machinery installation in extremely narrow spaces.
• Handle included on EF100S1.5 model.
• Flat jacks with a stroke of 15mm or less.

• Receive load over the entire area of piston head and base, as shown below.
Lateral loads may cause damage to the jack.

Receive load
uniformly

Dimensional
drawing

Dimensional drawing

Coupler angle is 10°
on EF10S1.1

ApplicablemodelsApplicablemodelsWith handle

Specifications
Model
Items

Unit

kN（ton）

Capacity
StrokeClosed height(H)

Cyl. outer dia.

(D)

Cyl. bore dia.

(d)Cyl. effective area
Oil capacity
Weightapprox.

Rod dia.

(f)

Wide of cyl.

(w)
(r)
(g)

Port size(m)

Height to coupler (L)Hand pump
Pumps
applicable Electric pump
Included coupler
Note) Receive load vertically to avoid lateral load.

20

PSP or QH1/2

O.J. Power® / E series 72MPa

EC type Hollow Jacks

Model number
EC type
Capacity (ton)S (Spring return) type

Spring return (S)Stroke (cm)Features• This jack has a hollow in the center of the piston. Useful in pre-stressed concrete construction,such as high-rise buildings, bridges, power plants, tunnels, and other applications.
• Piston rod is plated with hard chrome.
• Piston rod seal protects against dirt.

• Screw-in saddle.
• Inner surface of piston rod is threaded.
• Allowable lateral load is
1/20 of lifting capacity.

Power jacks

Dimensional drawing

Dimensional drawing
Carry ring
HandleApplicable models
With handle
With handle
With carry ringWith carry ringWith carry ring

Applicable models

Specifications
Model
Items

Unit

kN（ton）

Capacity
StrokeClosed height(H)

Cyl. outer dia.

(D)

Cyl. bore dia.

(d)Center hole dia. (q)Cyl. effective area
Oil capacity
Weightapprox.

Collar screw dia. (a)Collar screw length (j)Rod screw dia. (b)Rod screw length (k)Base screw dia. (c)(s)
Rod dia.

(f)

Saddle dia.

(o)
(t)
(g)

Port size(m)

Height to coupler (L)Hand pump
Pumps
applicable Electric pump

PSP or QH1/2

TWAー2
QH1

TWAー1.3

Included coupler

21

O.J. Power® / E series 72MPa
Model number

EC type Hollow Jacks

EC type
Capacity (ton)H (Hydraulic return) typeHydraulic return (H)Stroke (cm)Features• Double-acting push & return jack.
• Screw-in saddle.
• Inner surface of piston rod is threaded.
• Allowable lateral load is 1/20 of lifting
capacity.

Power jacks• This jack has a hollow in the center of the piston. Useful in pre-stressed concrete construction,such as high-rise buildings, bridges, power plants, tunnels, and other applications.
• Piston rod is plated with hard chrome.
• Piston rod seal protects against dirt.

Dimensional drawing

Carry ring

HandleDimensional drawing

Applicable models
With handle
With handle
With carry ring

ApplicablemodelsWith carry rings, bushing,and B-9J coupler

Specifications
Model
Items

Unit

kN（ton）
kN（ton）

Capacity
Pulling force
StrokeClosed height(H)

Cyl. outer dia.

(D)

Cyl. bore dia.

(d)Center hole dia. (q)Cyl. effective area
Oil capacity
Weightapprox.

Collar screw dia. (a)Collar screw length (j)Rod screw dia. (b)Rod screw length (k)Base screw dia. (c)(s)
Rod dia.

(f)

Saddle dia.

(o)
(t)
(g)

Port size(m)

Height to coupler (L)Distance between ports (P)Hand pump
Pumps
applicable Electric pump
Included coupler

22

TWADー1.3
TWADー2PSP or QH1/2

TWADー6.5
QH2

QH1
Bushing

O.J. Power® / E series 72MPa
Model number

EC type Hollow Jacks

EC type
Capacity (ton)H (Hydraulic return) type for PC construction

Hydraulic return (H)Stroke (cm)Features• This jack has a hollow in the center of the piston. Useful in pre-stressed concrete(PC) construction, such as high-rise buildings, bridges, power plants, tunnels,
and other applications.
• Piston rod is plated with hard chrome.

• Double-acting push & return jack.
• Equipped with a ram chair for hollow-jack attachments(Except EC100H15).
• Allowable lateral load is 1/20 of lifting capacity.

Power jacks

Dimensional drawing

Carry ring

Dimensional
drawing

Applicable models
No carry ringSpecifications
Model
Items

Unit

kN（ton）

Capacity
StrokeClosed height(H)

Cyl. outer dia.

(D)

Cyl. bore dia.

(d)Center hole dia. (q)Cyl. effective area
Oil capacity
Weightapprox.

Base screw dia. (c)
(u)
(v)
(s)
Rod dia.

(f)(g)

Port size(m)

Height to coupler (L)Distance between ports (P)Hand pump
Pumps
applicable Electric pump
Included coupler

TWADー2PSP or QH1/2

TWADー4
QH1

QH2

TWADー6.5

QH3

Bushing23

O.J. Power® / LC series 30MPa (Made-to-order)

LC type Hollow Aluminum Jacks
H(Hydraulic return) typeLC

Model number

20

H

15

LC type
Capacity (ton)Hydraulic return (H)Stroke (cm)Features

Dimensional drawing
φｑｇPower jacks• Made of aluminum tube and cover contribute tolightweight solution compared to steel-made jacks.
• Easy to carry to workplace.
• Please avoid high-frequency operation.
• Allowable lateral load is 1/20 of lifting capacity.

φＤ

Ｒｃ３／８

Ｌ

Ｈ

φｆ
φｄ

Ｐ

safty valve

Specifications-

Closed height

H

Cyl. outer dia

D

Cyl bore diadCenter hole dia

qCyl. effective area-

Oil Capacity-

Weight approx.

-

Height to coupler

L

Distance between ports P
Included coupler-

ＬＣ６０Ｈ１５

ＬＣ１００Ｈ１５200（20）600（60）400（40）
150
340
325
187
170
130
120
55
50
88.55
62.83
1330
945
30
26
41
38
210
210
B‐6J

1000（100）kN（ton）
mm
mm
mm
mm
mm
cm²
mℓ
kg
mm
mm
―

308
120
85
35
32.99
495
12
35
208

φｑ

safty valve

360
250
175
75
153.94
2310
62
48
220
Bushing＋B‐9J

ｇ

Stroke

ＬＣ４０Ｈ１５

φｆ
φｄ

Ｈ

-

ＬＣ２０Ｈ１５Ｐ

Capacity

Unit

Ｌ

Model
Items

Ｒｃ１／２

φＤ

Ｒｃ３／８

The max. working pressure on the return side is 30MPa. Pressure of safety valve is set at 36MPa.

O.J. Power® / ETC series 72MPa (Made-to-order)
Model number

ETC type Twin-jack

ETC 20Twin-jack
Capacity (ton)S(Spring return) type

Spring return (H)Stroke (cm)Features• By connecting 2 pcs of 100kN E type hydraulicjack with designated attachment, this twin-jack
can work as hollow jack.
• A larger diameter center hole and less weight thanstandard hollow hydraulic jack is possible.
• Detachable, easy to carry.

Specifications
Model
Items

Unit

kN（ton）
mm
Closed heightmmCenter hole dia
mm
Weight approx.
kg
Height to couplermm―
Pumps Hand pump
applicable Electric pump―
Included coupler―
Capacity
Stroke24

ETC20S15

ETC20S20

ETC20S25

200（20）
250
366
33
10.7
11.9
13.5
19
TWA‐0.9
TWA‐0.7
PSP or QH1／2
B‐6J
150
264

200
314

ETC20S30
300
421
15.1
TWA‐1.3

Dimensional drawing

S

15

O.J. Power® / AE series 72MPa

AE

Model number

AE Type Spatter Resistant Jacks

10

S

5

AE type
Capacity (ton)S(Spring return) type

Spring return (S)Stroke (cm)Features• Special surface treatment on the piston rod drastically reduces weld spatter adhesion.
• Equipped with a special surface treated scraper metal. Weld spatter adhered on the piston rod can be easily removed.
• Carrying handle enables easy transportation.

Power jacks

AE23S5AE50S5

Dimensional drawing

Dimensional drawing

45°

45°

φO
t

φO

t

Special surface treatment

Special surface treatment

φf
H

φf

L

φd

L

H

φd

Ｒｃ３／８

φD

Ｒｃ３／８

φD

Specifications
Model
Items

Unit

Capacity-

Stroke-Closed Height

H

Cyl. Outer dia. (D)D

Cyl. Bore Dia. (d)dOil Capacity-

Weight Approx.

-

Rod Dia (f)Saddle Dia (o)fotPort Size-

Height to coupler

L

Pumps Hand pump applicable Electric pump Included Coupler-kN（ton）
mm
mm
mm
mm
mℓ
kg
mm
mm
mm
―
mm
―
―
―

AE10S5

AE10S10

AE23S5230（23）100（10）
50
146

100
200

50
147

100
200
85
65

57
43
73
2.5

AE23S10

145
3.2

166
5

332
6.5
56
53
9

38
36
8.5

AE50S5500（50）
50
160
120
95
355
11
85
83.5
13

Rc3／8
20
TWA‐0.3 or TWA‐0.7
PSP or QH1／2
B‐6J

TWA‐0.7
QH1

25

O.J. Power® / LJA series 72MPa
Model number

LJA type Aluminum Jacks

LJA type
Capacity (ton)S (Spring return) type / A (Gas return) type

Spring return (S), Gas return (A)Stroke (cm)FeaturesPower jacks• Lightweight compared to all-steel jacks.
• Main parts, such as tube and piston rod, are made of aluminum (except 100A10).
• Bottom and corner parts are made of steel (except 100A10).
• To avoid blowout, do not exceed jack limitations.

Dimensional drawing

Dimensional drawing

ApplicablemodelsApplicable models

Specifications
Model
Items

Unit

CapacitykN（ton）

LJA100A101000（100）
100
277
200
135
143.1
1430
29
100

StrokeClosed height(H)

Cyl. outer dia.

(D)

Cyl. bore dia.

(d)Cyl. effective area
Oil capacity
Weightapprox.

Rod dia.

(f)

Saddle dia.

(o)Port size(m)

Height to coupler (L)(g)
Bottom plate(a) mm
Bottom plate(b) mmthickness
Hand pump
Pumps
applicable Electric pump
Included coupler

26

97
4.5

113

140
6

PSP or QH1/2

135

140

19

6

36
2.5

C

6J

O.J. Power® / JN series 72MPa (Order production)
Model number

JN type Jacks with Safety Nut

Jack with safety nut
Capacity (ton)S (Spring return) / H (Hydraulic return) type

Spring return (S), Hydraulic return (H)Stroke (cm)

How to use• Designed to hold loads for extended periods.
• For safety, use blocking or cribbing as well.

FeaturesPower jacks• Allowable lateral load is 1/20 of lifting capacity.
• Hydraulic-return jack has a built-in safety valve in the return circuit.

Dimensional drawing
Dimensional drawing
Safety nut

Safety nut

Applicable models

Applicable models

With carry ringSpecifications
Model
Items

Unit

CapacitykN（ton）

StrokeClosed height(H)

Cyl. outer dia.

(D)

Cyl. bore dia.

(d)Cyl. effective area
Oil capacity
WeightHead dia.

approx.
(o)
(j)
(g)

Rod dia.

(f)

Port size(m)

Height to advance port (L)Height to retract port (P)Hand pump
Pumps
applicable Electric pump

PSP or QH1/2

QH1

TWADー6.5
QH2

TWADー10

QH3

Included coupler

27

O.J. Power® / JFN series 72MPa (Made-to-order)

JFN type Low Profile Jacks with Safety Nut
S (Spring return) type

Model number
JFN type
R: Spherical baseNo mark: No spherical base
Capacity (ton)
Spring return (S)Features

Stroke (cm)Power jacks• For maintenance of bridges, overpasses, or other heavy structures is required.
• Equipped with a safety nut for load holding.
• JFNR types (tilting saddle) are recommended for inclined surfaces.

Dimensional drawing
Dimensional drawing

Applicable models
Applicable models

No carry ringNo carry ringSpecifications
Model
Items

Unit

kN（ton）

Capacity
StrokeClosed height(H)

Cyl. outer dia.

(D)

Cyl. bore dia.

(d)Cyl. effective area
Oil capacity
Weightapprox.

Rod dia.

(f)

Safety nut dia. (w)
(g)
(u)
(v)
Port size(m)

Height to coupler (L)Hand pump
Pumps
applicable Electric pump

PSP or QH1/2

Included coupler
Head inclination degree28

Not more than

OCLP type Low Profile Jack with Safety Nut
Gravity return (Made-to-order)
Features• Low profile design for use in limited space.
• Safety nut provides mechanical lock for load holding.
• External force is required to return piston rod.
• No piston-stopper.
• An overflow port is provided to prevent beyond stroke limit operation.

Power jacks

Specifications
Model
Items

Unit

Cylinder Cap.
StrokeColl.HeightA

Ext.Height
Cyl. Outside
Diam.

D

Cyl. Bore Diam. E
Cyl. Effective Area
Oil Cap.
Weigth
Saddle Diam.

J

Safety nut
heightS

Saddle Protrusion
K
from Plnger.
Saddle Max.Tilt Angle R
Port size
Base toAdvance Port

H

kN
(ton)
mm
(in)
mm
(in)
mm
(in)
mm
(in)
mm
(in)
cm2
(in2)
cm3
(in3)
kg
(lbs)
mm
(in)
mm
(in)
mm
(in)
－
－
mm
(in)

Hand pump
Pumps
applicable Electric pump

OCLP-602

OCLP-1002

OCLP-1602

OCLP-2002

OCLP-2502

OCLP-4002

OCLP-5002

606
（60）
50
(1.97)
125(4.92)
175(6.89)
140(5.51)
105.0(4.13)
86.6(13.42)432(26.42)15(33)
96(3.78)
28(1.10)
6
(.24)
5°

1027
（100）
50
(1.97)
137(5.39)
187(7.36)
175(6.89)
136.7(5.38)
146.8(22.75)734(44.78)26(57)
126(4.96)
31(1.22)
8
(.31)
5°

1619
（160）
45
(1.77)
148(5.83)
193(7.60)
220(8.66)
171.6(6.76)
231.3(35.85)1040(63.51)44(97)160(6.30)
40(1.57)
9
(.35)
5°

2567
（260）
45
(1.77)
159(6.26)
204(8.03)
275(10.83)216.1(8.51)
366.8(56.85)1650(100.72)
74
(163)
200
(7.87)
44(1.73)
11
(.43)
5°

3916
（400）
45
(1.77)
178(7.01)
223(8.78)
350(13.78)267.0(10.51)559.5(86.72)2517(153.64)
134
(295)
250
(9.84)
55(2.17)
11
(.43)
4°

5114
（520）
45
(1.77)
192(7.56)
237(9.33)
400(15.75)350.0(12.01)730.6(113.25)3287(200.63)
189
(416)
290
(11.42)62(2.44)
10
(.39)
3°

19
(.75)
TWA－0.7

21
27
(.83)
(1.06)
TWA－0.9
TWA－1.3
PSP or QH1/2

1999
（200）
45
(1.77)
155(6.10)
200(7.87)
245(9.65)
190.7(7.51)
285.6(44.27)1285(78.43)
57
(125)
180
(7.09)
43(1.69)
10(.39)
5°
NPT3/830(1.18)
TWA－2

32(1.26)
TWA－2

39(1.54)TWA－4
QH1/2 or QH1

48(1.89)
TWA－6.5

Please have load received evenly with the whole surface of cylinder head and base.

29

OCLSG type High Tonnage Jacks
Gravity return (Made-to-order)

Power jacks

Features• All models come with mounting holes on the lower surface of jack• Piston and cylinder inner tube are plated with hard chrome.
• Equipped with a dust wiper that prevent contamination which
result in a prolonged life of jack.
• A built-in piston-stopper prevents piston rod from blowing out.
• Powder coat finish provides better resistance against corrosionand dust.

CylinderCap.

StrokeEffectiveArea

Oil Cap.

Coll.Height

kN
(ton)

mm
(in)

cm2
(in2)

cm3
(in3)

mm
(in)

385
(23.25)770(46.50)1155(69.75)1540(93.00)1924(116.25)2309(139.50)664(40.50)1327(81.00)1991(121.50)
2655(162.00)
3318(202.50)3982(242.99)993(60.58)
1986(121.17)2978(181.75)
3971(242.33)4964(302.92)5957(363.50)1330(81.13)3989(243.40)7977(486.79)
1832(111.81)5497(335.42)10993(670.84)2281(139.19)6843(417.56)
13685(835.11)2800(170.84)8399(512.51)
16797(1025.02)
3653(222.92)
10959(668.77)
21918(1337.55)
4276(260.97)12829(782.90)25659(1565.81)
5881(358.91)
17644(1076.72)
35288(2153.44)7329(447.23)21986(1341.68)
43972(2683.35)

162(6.38)
212(8.35)
262(10.31)
312(12.28)362(14.25)412(16.22)182(7.16)
232(9.13)
282(11.09)332(13.06)382(15.03)432(17.00)196(7.72)
246(9.69)
296(11.65)346(13.62)396(15,59)446(17.56)216(8.50)
316(12.44)466(18.35)235(9.25)
335(13.19)485(19.05)312(12.28)412(16.22)562(22.13)375(14.74)475(18.68)625(24.59)419(16.50)519(20.43)669(26.34)429(16.89)529(20.83)679(26.73)474(18.66)574(22.60)724(28.50)564(22.20)664(26.14)814(32.05)Model Number

OCLSG-502
OCLSG-504
OCLSG-506
OCLSG-508

539
(50)

OCLSG-5010
OCLSG-5012
OCLSG-1002
OCLSG-1004
OCLSG-1006
OCLSG-1008

929
(100)

OCLSG-10010
OCLSG-10012
OCLSG-1502
OCLSG-1504
OCLSG-1506
OCLSG-1508

1390
(150)

OCLSG-15010
OCLSG-15012
OCLSG-2002
OCLSG-2006
OCLSG-20012
OCLSG-2502
OCLSG-2506
OCLSG-25012
OCLSG-3002
OCLSG-3006
OCLSG-30012
OCLSG-4002
OCLSG-4006
OCLSG-40012
OCLSG-5002
OCLSG-5006
OCLSG-50012
OCLSG-6002
OCLSG-6006
OCLSG-60012
OCLSG-8002
OCLSG-8006
OCLSG-80012
OCLSG-10002
OCLSG-50 to
OCLSG-150 models

30

OCLSG-200 to
OCLSG-1000 models

OCLSG-10006
OCLSG-100012

1861
(200)

2565
(250)

3193
(300)

3919
(400)

5114
(500)

5987
(600)

8234
(800)

10260
(1000)

50(1.97)
100(3.94)
150(5.91)
200(7.87)
250(9.84)
300(11.81)50(1.97)
100(3.94)
150(5.91)
200(7.87)
250(9.84)
300(11.81)50(1.97)
100(3.94)
150(5.91)
200(7.87)
250(9.84)
300(11.81)50(1.97)
150(5.91)
300(11.81)50(1.97)
150(5.91)
300(11.81)50(1.97)
150(5.91)
300(11.81)50(1.97)
150(5.91)
300(11.81)50(1.97)
150(5.91)
300(11.81)50(1.97)
150(5.91)
300(11.81)50(1.97)
150(5.91)
300(11.81)50(1.97)
150(5.91)
300(11.81)

77.0(11.81)

132.7(20.57)

198.6(30.78)265.9(41.22)366.4(56.80)456.2(70.71)559.9(86.78)730.6(113.25)855.3(132.57)

1176.3(182.32)1465.7(227.19)

A

Ext.Height

Outside Diam.

mm
(in)

mm
(in)

E

mm
(in)

Base toAdvance Port
H

mm
(in)

Standard
Saddle Diam.
J

mm
(in)

SaddleProtrusion from
Plnger.
K

mm(in)

Depth of
Plunger Hole
L

mm
(in)

Base Mounting Holes
Bolt Cir. Diam.
U

mm
(in)

ThreadVmm(in)Thread Depth
Z

mm
(in)

130
(5.12)

98.6(3.88)

52(2.05)

50(1.97)

1
(.04)

19
(.75)

65
(2.56)

M12

22
(.87)

165
(6.50)

130.0(5.12)

54(2.13)

75(2.95)

1
(.04)

19
(.75)

95
(3.74)

M12

22
(.87)

205
(8.07)

159.0(6.26)

61(2.40)

94(3.70)

1
(.04)

19
(.75)

130
(5.12)

M12

22
(.87)

235
(9.25)

184.0(7.24)

67(2.62)

113(4.45)

1
(.04)

24
(.94)

165
(6.50)

M12

22
(.87)

275
(10.83)216.0(8.50)

73(2.87)

145(5.71)

1
(.04)

24
(.94)

190
(7,48)

M12

22
(.87)

310
(12.20)241.0(9.49)

101(3.98)

177(6.97)

1
(.04)

19
(.75)

180
(7.09)

M16

36(1.42)

350(13.78)267.0(10.51)114(4.49)

196(7.72)

3(.12)

27(1.06)

205(8.07)

M16

36(1.42)

400(15.75)305.0(12.01)114(4.49)

228(8.98)

3(.12)

27(1.06)

250(9.84)

M24

38(1.50)

430(16.93)330.0(12.99)114(4.49)

247(9.72)

3(.12)

27(1.06)

275(10.83)M24

38(1.50)

505(19.88)387.0(15.24)149(5.87)

297(11.69)

3
(.12)

27
(1.06)

330(12.99)M24

38(1.50)

560(22.05)432.0(17.01)174(6.85)

323(12.72)

3
(.12)

27
(1.06)

375(14.76)M24

38(1.50)

Weigth

kg
(lbs)
17
(37)
20
(44)
23
(51)
27
(60)
31
(68)
34
(75)
19
(42)
29
(64)
40
(88)
50
(110)
61
(134)
71
(157)
39
(86)
52
(115)
65
(143)
78
(172)
92
(203)
105
(231)
68
(121)
91
(201)
146
(322)
102
(196)
136
(300)
207
(456)
184
(406)
232
(511)
303
(668)
270
(595)
330
(728)
421
(928)
401
(884)
480
(1058)
599(1321)
474(1045)
565(1246)
701(1545)
741(1634)
880(1914)
1058(2332)
1062(2341)
1213(2674)
1439(3172)

Power jacks

212(8.35)
312(12.28)412(16.22)512(20.16)612(24.09)712(28.03)232(9.13)
332(13.06)432(17.00)532(20.94)632(24.87)732(28.81)
246(9.69)
346(13.62)446(17.56)546(21.50)646(25.43)746(29.37)266(10.47)466(18.35)766(30.16)285(11.22)485(19.09)785(30.91)362(14.25)562(22.13)862(33.94)425(16.71)625(24.59)925(36.40)469(18.46)669(26.34)969(38.15)479(18.86)679(26.73)979(38.54)524(20.63)724(28.50)1024(40.31)
614(24.17)814(32.05)1114(43.86)

D

Bore Diam.

31

OCLRG type High Tonnage Jacks
Gravity return (Made-to-order)

Power jacks

Features• All models come with mounting holes on the lower surface of jack• Piston is plated with hard chrome.
• Safety valve in the return side prevents damage caused by
accidental over-pressurization.
• Equipped with a dust wiper that prevent contamination which
result in a prolonged life of jack.
• Come with an interchangeable hardened grooved saddle.
• Powder coat finish provides better resistance against corrosionand dust.

CylinderCap.

Stroke

kN
(ton)

mm
(in)

Model Number

OCLRG-502
OCLRG-504
OCLRG-506
OCLRG-508

539
(50)

OCLRG-5010
OCLRG-5012
OCLRG-1002
OCLRG-1004
OCLRG-1006
OCLRG-1008

929
(100)

OCLRG-10010
OCLRG-10012
OCLRG-1502
OCLRG-1504
OCLRG-1506
OCLRG-1508

1390
(150)

OCLRG-15010
OCLRG-15012
OCLRG-2002
OCLRG-2006
OCLRG-20012
OCLRG-2502
OCLRG-2506
OCLRG-25012
OCLRG-3002
OCLRG-3006
OCLRG-30012
OCLRG-4002
OCLRG-4006
OCLRG-40012
OCLRG-5002
OCLRG-5006
OCLRG-50012
OCLRG-6002
OCLRG-6006
OCLRG-60012
OCLRG-8002
OCLRG-8006
OCLRG-80012
OCLRG-10002
OCLRG-10006
OCLRG-502 to
OCLRG-15012

32

OCLRG-2002 to
OCLRG-16006

OCLRG-100012
OCLRG-16006

1861
(200)

2565
(250)

3193
(300)

3919
(400)

5114
(500)

5987
(600)

8234
(800)

10260
(1000)
16024(1600)

50(1.97)
100(3.94)
150(5.91)
200(7.87)
250(9.84)
300(11.81)50(1.97)
100(3.94)
150(5.91)
200(7.87)
250(9.84)
300(11.81)50(1.97)
100(3.94)
150(5.91)
200(7.87)
250(9.84)
300(11.81)50(1.97)
150(5.91)
300(11.81)50(1.97)
150(5.91)
300(11.81)50(1.97)
150(5.91)
300(11.81)50(1.97)
150(5.91)
300(11.81)50(1.97)
150(5.91)
300(11.81)50(1.97)
150(5.91)
300(11.81)50(1.97)
150(5.91)
300(11.81)50(1.97)
150(5.91)
300(11.81)155(6.10)

Max. Cylinder Cap.

Cylinder Effective
Area

Push

Push

Pull

Pull

cm2
(in2)

kN

539

269

76.2
37.7
(11.81) (5.85)

929

433

132.7
61.9
(20.75) (9.59)

1390

675

198.6
96.5
(30.78) (14.96)

1861

889

265.9 127.0(41.22) (19.68)

2565

1068

366.4 152.6(53.80) (23.65)

3193

1060

456.2 151.4(70.71) (23.46)

3919

1354

559.9 193.5(86.79) (29.99)

5114

1733

730.6 247.6(113.25) (38.37)

5987

2068

855.3 295.4(132.57) (45.79)

8234

2790

1176.3 387.0(182.32) (59.99)

10260

3792

1465.7 541.7(227.19) (83.97)

16024

4891

2289.1(354.81)699.3(108.39)

Coll.
HeightOil Cap.
Push

cm3
(in3)

Pull

A

mm
(in)

Ext.
HeightOutside
Diam.

mm
(in)

mm
(in)

D

Base to Top to
Cly. Bore
Advance Retract
Diam.
Port
Port
E

mm
(in)

H

mm
(in)

I

mm
(in)

Base Mounting Holes
Standard
SaddleDepth of
SaddleProtrusion Plunger
WeigthBolt Cir. Diam. Thread Thread Depth
Diam.
from Plnger.
Hole
J

mm
(in)

L

mm
(in)

U

mm
(in)

V

mm
(in)

Z

mm
(in)

1
(.04)

19
(.75)

65
(2.56)

M12

22
(.87)

1
(.04)

19
(.75)

95
(3.74)

M12

22
(.87)

1
(.04)

19
(.75)

130
(5.12)

M12

22
(.87)

1
(.04)

24
(.94)

165
(6.50)

M12

22
(.87)

1
(.04)

24
(.94)

190
(7.48)

M12

22
(.87)

1
(.04)

19
(.75)

180
(7.09)

M16

36(1.42)

3(.12)

27(1.06)

205(8.07)

M16

36(1.42)

3(.12)

27(1.06)

250(9.84)

M24

38(1.50)

3(.12)

27(1.06)

275(10.83)M24

38(1.50)

3(.12)

27(1.06)

330(12.99)M24

38(1.50)

3(.12)

27(1.06)

375(14.76)M24

38(1.50)

−­­

−­­

400
(15.75)M24

30(1.18)

kg
(lbs)
17
(37)
20
(44)
23
(51)
27
(60)
31
(68)
34
(75)
29
(42)
34
(64)
40
(88)
46
(110)
52
(134)
65
(157)
39
(86)
52
(115)
65
(143)
78
(172)
92
(203)
105
(231)
68
(121)
93
(201)
146
(322)
102
(196)
136
(300)
207
(456)
184
(406)
232
(511)
303
(668)
270
(595)
330
(728)
421
(928)
401
(884)
480
(1058)
599(1321)
474(1045)
565(1246)
701(1545)
741(1634)
868(1914)
1058(2332)
1062(2341)
1213(2674)
1439(3172)
2179(4804)

Power jacks

385
192
162
212
(23.25)(11.51) (6.38) (8.35)
770
385
212
312
(46.50)(23.02) (8.35) (12.28)
1155
577
262
412
(69.75)(34.52) (10.31) (16.22)
130
98.6
42
33
50
1540
770
312
512
(5.12) (3.88) (2.05) (1.29) (1.97)(93.00)(46.03) (12.28) (20.16)
1924
962
362
612
(116.25) (57.54) (14.25) (24.09)
2309
1155
412
712
(139.50) (69.05) (16.22) (28.03)
664
309
182
232
(40.50)(18.87) (7.16) (9.13)
1327
619
232
332
(81.00)(37.74) (9.13) (13.06)
1991
928
282
432
(121.50) (56.61) (11.09) (17.00)
165
130.0
54
48
75
2655
1237
332
532
(6.50) (5.12) (2.13) (1.89) (2.95)(162.00) (75.49) (13.06) (20.94)
3318
1546
382
632
(202.50) (94.36) (15.03) (24.87)
3982
1856
432
732
(242.99) (113.23) (17.00) (28.81)
993
482
196
246
(60.58)(29.44) (7.72) (9.69)
1986
965
246
346
(121.17) (58.88) (9.69) (13.62)
2978
1447
296
446
(181.75) (88.32) (11.65) (17.56)
205
159.0
61
56
94
3971
1930
346
546
(8.07) (6.26) (2.40) (2.22) (3.70)(242.33) (117.76) (13.62) (21.50)
4964
2412
396
646
(302.92) (147.20) (15.59) (25.43)
5957
2895
446
746
(363.50) (176.64) (17.56) (29.37)
1330
635
216
266
(81.13)(38.74) (8.50) (10.47)
235
184.0
67
56
113
3989
1905
316
466
(243.40) (116.23) (12.44) (18.35) (9.25)(7.24) (2.62) (2.22) (4.45)
7977
3809
466
766
(486.79) (232.46) (18.35) (30.16)
1832
763
235
285
(111.81) (46.56) (9.25) (11.22)
275
216.0
73
78
145
5497
2289
335
485
(335.42) (139.69) (13.19) (19.09) (10.83) (8.50) (2.87) (3.07) (5.71)
10993
4578
485
785
(670.84) (279.39) (19.09) (30.91)
2281
757
312
362
(139.19) (46.18) (12.28) (14.25)
310
241.0 101
75
177
6843
2270
412
562
(417.56) (138.55) (16.22) (22.13) (12.20) (9.49) (3.98) (2.95) (6.97)
13685
4541
562
862
(835.11) (277.10) (22.13) (33.94)
2800
967
375
425
(170.84) (59.03) (14.74) (16.71)
350
267.0 114
105
196
8399
2902
475
625
(512.51) (177.09) (18.68) (24.59) (13.78) (10.51) (4.49) (4.13) (7.72)
16797
5804
625
925
(1025.02) (354.18) (24.59) (36.40)
3653
1238
419
469
(222.92) (75.54) (16.50) (18.46)400
305.0 114
135
228
10959
3713
519
669
(668.77) (226.61) (20.43) (26.34) (15.75) (12.01) (4.49) (5.31) (8.98)
21918
7427
669
969
(1337.55) (453.22) (26.34) (38.15)
4276
1477
429
479
(260.97) (90.13) (16.89) (18.86)
430
330.0 114
135
247
12829
4431
529
679
(782.90) (270.39) (20.83) (26.73) (16.93) (12.99) (4.49) (5.31) (9.72)
25659
8862
679
979
(1565.81) (540.79) (26.73) (38.54)
5881
1935
474
524
(358.91) (118.09) (18.66) (20.63)
505
387.0 149
135
297
17644
5806
574
724
(1076.72) (354.28) (22.60) (28.50) (19.88) (15.24) (5.87) (5.31) (11.69)
35288
11611
724
1024
(2153.44) (708.57) (28.50) (40.31)
7329
2709
564
614
(447.23) (165.29) (22.20) (24.17)560
432.0 174
170
323
21986
8126
664
814
(1341.68) (495.87) (26.14) (32.05) (22.05) (17.01) (6.85) (6.69) (12.72)
43972
16252
814
1114
(2683.35) (991.75) (32.05) (43.86)
35495
10845
825
980
710
540.0
205
170
−­­
(1397.44) (661.80) (32.48) (38.58) (27.95)(21.26)(8.07)(6.69)

K

mm
(in)

33

OCLL type High Tonnage Jacks
Gravity return (Made-to-order)

Power jacks

Features•C ylinder inner tube is plated with hard chrome.
•S afety nut provides mechanical lock for load holding.
•C ome with an interchangeable hardened grooved saddle.
• An overflow port is provided to prevent beyond stroke limit
operation.
•S pecial coating on safety nut and piston provides better
resistance against corrosion and abrasion.
•P owder coat finish provides better resistance against corrosionand dust.

Cylinder Cap.

StrokeEffective Area

Oil Cap.

kN
(ton)

mm
(in)

cm2
(in2)

cm3
(in3)

Model Number

OCLL-502
OCLL-504
OCLL-506
OCLL-508

496(50)

OCLL-5010
OCLL-5012
OCLL-1002
OCLL-1004
OCLL-1006
OCLL-1008

929
(100)

OCLL-10010
OCLL-10012
OCLL-1502
OCLL-1504
OCLL-1506
OCLL-1508

1390
(150)

OCLL-15010
OCLL-15012
OCLL-2002
OCLL-2006
OCLL-20012
OCLL-2502
OCLL-2506
OCLL-25012
OCLL-3002
OCLL-3006
OCLL-30012
OCLL-4002
OCLL-4006
OCLL-40012
OCLL-5002
OCLL-5006
OCLL-50012
OCLL-6002
OCLL-6006
OCLL-60012
OCLL-8002
OCLL-8006
OCLL-80012
OCLL-10002
OCLL-10006
OCLL-502 to OCLL-25012

34

OCLL-3002 to OCLL-100012

OCLL-100012

1859
(200)

2562
(250)

3193
(300)

3919
(400)

5118
(500)

5983
(600)

8238
(800)

10260
(1000)

50(1.97)
100(3.94)
150(5.91)
200(7.87)
250(9.84)
300(11.81)50(1.97)
100(3.94)
150(5.91)
200(7.87)
250(9.84)
300(11.81)50(1.97)
100(3.94)
150(5.91)
200(7.87)
250(9.84)
300(11.81)50(1.97)
150(5.91)
300(11.81)50(1.97)
150(5.91)
300(11.81)50(1.97)
150(5.91)
300(11.81)50(1.97)
150(5.91)
300(11.81)50(1.97)
150(5.91)
300(11.81)50(1.97)
150(5.91)
300(11.81)50(1.97)
150(5.91)
300(11.81)50(1.97)
150(5.91)
300(11.81)70.9(10.99)132.7(20.57)

198.6(30.78)265.6(41.17)366.1(56.75)456.2(70.71)559.9(86.79)731.1(113.25)845.8(132.57)

1176.9(182.42)1466.4(227.30)355(21.63)709(43.25)1064(64.88)1418(86.51)
1773(108.14)2127(129.76)664(40.5)
1327(81.00)1991(121.50)2654(162.00)
3318(202.50)3981(242.99)993(60.58)
1986(121.17)2979(181.75)
3972(242.33)4965(302.92)5958(363.50)1330(81.04)3989(243.13)7995(486.27)
1832(111.70)5496(335.11)10976(670.22)2281(139.19)6843(417.56)13740(835.11)2800(170.84)8399(512.51)
16800(1025.02)
3653(222.99)10967(668.77)
21930(1337.55)
4277(260.97)12830(782.90)25650(1565.81)
5882(359.09)
17645(1077.27)
35370(2154.55)
7329(447.43)
21986(1342.30)
43980(2684.59)

Coll.Height

Outside Diam.

mm
(in)

mm
(in)

mm
(in)

164
(6.46)
214(8.43)
264(10.39)314(12.36)364(14.33)414(16.30)187(7.36)
237(9.33)
287(11.30)337(13.27)387(15.24)437(17.20)209(8.23)
259(10.20)309(12.17)359(14.13)409(16.10)459(18.07)243(9.57)
343(13.50)493(19.41)249(9.80)
349(13.74)499(19.65)295(11.61)395(15.55)545(21.46)335(13.19)435(17.13)585(23.03)375(14.76)475(18.70)625(24.61)395(15.55)495(19.49)645(25.39)455(17.91)555(21.85)705(27.76)495(19.49)595(23.43)745(29.33)214(8.43)
314(12.36)414(16.30)514(20.24)614(24.17)714(28.11)237(9.33)
337(13.27)437(17.20)537(21.14)637(25.08)737(29.02)259(10.20)359(14.13)459(18.07)559(22.01)659(25.94)759(29.88)293(11.54)493(19.41)793(31.22)299(11.77)99(19.65)799(31.46)345(13.58)545(21.46)845(33.27)385(15.16)585(23.03)885(34.84)425(16.73)625(24.61)925(36.42)445(17.52)645(25.39)945(37.20)505(19.88)705(27.76)1005(39.57)545(21.46)745(29.33)1045(41.14)A

D

Bore Diam.
E

mm
(in)

Base toAdvance Port
H

mm
(in)

Standard
Saddle Diam.
J

mm
(in)

SaddleProtrusionfrom Plnger.
K

mm
(in)

Depth of
Plunger Hole
L

mm
(in)

Lock Nut
Height
S

mm
(in)

125
(4.92)

95.0(3.74)

30(1.18)

71(2.80)

2
(.08)

15
(.51)

36
(1.42)

165(6.50)

130.0(5.12)

30(1.18)

71(2.80)

2
(.08)

15
(.51)

44
(1.73)

205(8.07)

159.0(6.26)

39(1.54)

130(5.12)

2
(.08)

25
(.98)

44
(1.73)

235(9.25)

184.0(7.24)

50(1.97)

130(5.12)

2
(.08)

25
(.98)

50
(1.97)

275(10.24)216.0(8.50)

50(1.97)

150(5.91)

2
(.08)

25
(.98)

56
(2.20)

310(12.20)241.0(9.49)

59(2.32)

139(5.47)

5
(.20)

25
(.98)

60
(2.36)

350(13.78)267.0(10.51)70(2.76)

159(6.26)

5
(.20)

25
(.98)

70
(2.76)

400(15.75)305.0(12.01)80(3.15)

179(7.05)

5
(.20)

25
(.98)

80
(3.15)

430(16.93)330.0(12.99)85(3.35)

194(7.64)

5
(.20)

25
(.98)

85
(3.35)

505(19.88)387.0(15.24)100(3.94)

224(8.82)

5
(.20)

25
(.98)

100
(3.94)

560(22.05)432.0(17.01)110(4.33)

249(9.80)

5
(.20)

25
(.98)

110
(4.33)

Weigth

kg
(lbs)
15
(35)
20
(46)
25
(57)
30
(68)
35
(79)
40
(90)
30
(68)
39
(87)
48
(106)
56
(125)
64
(143)
73
(162)
53
(117)
66
(146)
78
(174)
92
(203)
104
(231)
117
(260)
83
(183)
117
(260)
170
(376)
116
(256)
162
(359)
234
(515)
173
(382)
233
(514)
323
(712)
250
(553)
327
(721)
441
(972)
367
(809)
466
(1029)
617(1360)
446
(985)
562
(1241)
737(1625)
709(1565)
870(1918)
1110(2446)
949(2094)
1141(2517)
1430(3151)

Power jacks

Ext.Height

35

OCLS type High Tonnage Jacks
Gravity return (Made-to-order)

Power jacks

Features• Low profile design for use in limited space.
• Come with an interchangeable hardened grooved saddle.
• An overflow port is provided to prevent beyond stroke limit
operation.
• Piston is plated with hard chrome.
• Equipped with a wiper that prevent contamination which resultin a prolonged life of jack.
• Powder coat finish provides better resistance against corrosionand dust.

Cylinder Cap.

StrokeEffective Area

Oil Cap.

kN
(ton)

mm
(in)

cm2
(in2)

cm3
(in3)

Model Number

OCLS-502
OCLS-504
OCLS-506
OCLS-508

496(50)

OCLS-5010
OCLS-5012
OCLS-1002
OCLS-1004
OCLS-1006
OCLS-1008

929
(100)

OCLS-10010
OCLS-10012
OCLS-1502
OCLS-1504
OCLS-1506
OCLS-1508

1390
(150)

OCLS-15010
OCLS-15012
OCLS-2002
OCLS-2006
OCLS-20012
OCLS-2502
OCLS-2506
OCLS-25012
OCLS-3002
OCLS-3006
OCLS-30012
OCLS-4002
OCLS-4006
OCLS-40012
OCLS-5002
OCLS-5006
OCLS-50012
OCLS-6002
OCLS-6006
OCLS-60012
OCLS-8002
OCLS-8006
OCLS-80012
OCLS-10002
OCLS-10006
OCLS-502 to OCLS-25012

36

OCLS-3002 to OCLS-100012

OCLS-100012

1859
(200)

2562
(250)

3193
(300)

3919
(400)

5118
(500)

5983
(600)

8238
(800)

10260
(1000)

50(1.97)
100(3.94)
150(5.91)
200(7.87)
250(9.84)
300(11.81)50(1.97)
100(3.94)
150(5.91)
200(7.87)
250(9.84)
300(11.81)50(1.97)
100(3.94)
150(5.91)
200(7.87)
250(9.84)
300(11.81)50(1.97)
150(5.91)
300(11.81)50(1.97)
150(5.91)
300(11.81)50(1.97)
150(5.91)
300(11.81)50(1.97)
150(5.91)
300(11.81)50(1.97)
150(5.91)
300(11.81)50(1.97)
150(5.91)
300(11.81)50(1.97)
150(5.91)
300(11.81)50(1.97)
150(5.91)
300(11.81)70.9(10.99)132.7(20.57)

198.6(30.78)265.6(41.17)366.1(56.80)456.2(70.71)559.9(86.79)731.1(113.25)845.8(132.57)

1176.9(182.32)

1466.4(227.19)355(21.63)709(43.25)1064(64.88)1418(86.51)
1773(108.14)2127(129.76)664(40.50)1327(81.00)1991(121.50)2654(162.00)
3318(202.50)3981(242.99)993(60.58)
1986(121.17)2979(181.75)
3972(242.33)4965(302.92)5958(363.50)1330(81.04)3989(243.40)7977(486.79)
1832(111.81)5496(335.42)10996(670.84)2281(139.19)6843(417.56)13740(835.11)2800(170.84)8399(512.51)
16877(1025.02)
3653(222.99)10967(668.77)21900(1337.55)
4277(260.97)12830(782.90)25710(1565.81)
5882(358.91)
17645(1076.72)
35370(2153.44)7329(447.23)21986(1341.68)
43980(2683.35)

Coll.Height

Outside Diam.

mm
(in)

mm
(in)

mm
(in)

128
(5.04)
178(7.01)
228(8.98)
278(10.94)327(12.91)378(14.88)143(5.63)
193(7.60)
243(9.57)
293(11.54)343(13.50)392(15.47)165(6.50)
215(8.46)
265(10.43)315(12.40)365(14.37)414(16.34)193(7.60)
293(11.54)443(17.44)193(7.60)
293(11.54)443(17.44)235(9.25)
335(13.19)485(19.09)265(10.43)365(14.37)515(20.28)295(11.61)395(15.55)545(21.46)310(12.20)410(16.14)560(22.05)355(13.98)455(17.91)605(23.82)385(15.16)485(19.09)635(25.00)178(7.01)
278(10.94)378(14.88)478(18.82)578(22.76)678(26.69)193(7.60)
293(11.54)393(15.47)493(19.41)
593(23.35)693(27.28)215(8.46)
315(12.40)415(16.34)515(20.28)615(24.21)
715(28.15)243(9.57)
443(17.44)743(29.25)243(9.57)
443(17.44)743(29.25)285(11.22)485(19.09)785(30.91)315(12.40)515(20.28)815(32.09)345(13.58)545(21.46)845(33.27)360(14.17)560(22.05)860(33.86)405(15.94)605(23.82)905(35.63)435(17.13)635(25.00)935(36.81)A

D

Bore Diam.
E

mm
(in)

Base toAdvance Port
H

mm
(in)

Standard
Saddle Diam.
J

mm
(in)

SaddleProtrusion from
Plnger.
K

mm(in)

Depth of
Plunger Hole
L

mm
(in)

125
(4.92)

95.0(3.74)

30(1.18)

71(2.80)

2
(.08)

15
(.51)

165
(6.50)

130.0(5.12)

30(1.18)

71(2.80)

2
(.08)

15
(.51)

205
(8.07)

159.0(6.26)

39(1.54)

130(5.12)

2
(.08)

25
(.98)

235
(9.25)

183.9(7.24)

50(1.97)

130(5.12)

2
(.08)

25
(.98)

275
(10.24)215.9(8.50)

50(1.97)

150(5.91)

2
(.08)

25
(.98)

310
(12.20)241.0(9.49)

59(2.32)

139(5.47)

5
(.20)

25
(.98)

350
(13.78)267.0(10.51)70(2.76)

159(6.26)

5
(.20)

25
(.98)

400
(15.75)305.1(12.01)80(3.15)

179(7.05)

5
(.20)

25
(.98)

430
(16.93)329.9(12.99)85(3.35)

194(7.64)

5
(.20)

25
(.98)

505
(19.88)387.1(15.24)100(3.94)

224(8.82)

5
(.20)

25
(.98)

560
(22.05)432.1(17.01)110(4.33)

249(9.80)

5
(.20)

25
(.98)

Weigth

kg
(lbs)
14
(31)
18
(40)
23
(51)
28
(62)
33
(73)
38
(84)
24
(53)
32
(70)
40
(90)
49
(110)
58
(128)
66
(147)
43
(95)
55
(123)
69
(154)
82
(180)
95
(209)
108
(238)
66
(145)
101
(222)
154
(339)
90
(198)
137
(301)
208
(458)
137
(301)
198
(436)
288
(636)
200
(440)
275
(605)
390
(860)
289
(636)
390
(858)
540
(1190)
350
(770)
465
(1023)
640(1410)
549(1208)
709(1560)
950(2090)
729(1604)
921(2026)
1210(2660)

Power jacks

Ext.Height37

O.J. Power® / Water pressure jacks & water pressure stick jack 72MPa

SA type Water Pressure Jacks

Model number
Water pressure jack
Capacity (ton)S (Spring return) type

Spring return (S)Stroke (cm)Features• Using water as a working fluid. No hazardous contaminants and no danger of catching fire.
• Stainless steel material is resistant to corrosion.
• Compact jacks that can withstand 72MPa. Attached handle. Easy to carry.

Power jacks

Dimensional drawing

Specifications
Model
Items
CapacityUnitkN（ton）

StrokeClosed Height
Cyl.outer dia.(D)Cyl.bore dia.(d)Cyl.effective area
Water capacity
Weight approx.
Rod dia.(f)Saddle dia.(o)Port size
Included coupler

SJW type Water Pressure Stick Jack
Features

Dimensional
drawing

125• Jack and pump combined into one unit.
• Use in any orientation.

Specifications
Model
Items
CapacityUnitkN（ton）

Stroke140

Usable water volume
Working pressure
Water delivery
Weight approx.

38

High
Low
High
Low

SJW5S1050(5)O.J. Power® / Water pressure hand pumps 72MPa

S

Model number

TWAS type Water Hand Pumps

Hand pump
For water pressure

for single-acting jacks

Usable water volume

Features• Using water as a working fluid. No hazardous contaminants and no danger of catching fire.

Dimensional drawing
Safety valve (High press.)
Safety valve (Low press.)

Release valve

Suction & delivery (Low press.)
Suction & delivery (High press.)

Air vent plug
Water check bar and water supply port

Approx.
Handle bar Water tank Hook

Approx.

Hand pumps

Delivery Pressure

Items Usable water volume
Model

High

TWAS

Approx.

Approx.

Specifications

Approx.

Operational Delivery
Low

High

Weight approx.

Connection Port

Low

0.7

Note) Water may stagnate if used for an extended period of time. Change the water periodically or use a preservative.

Accessories

Model number

RW6

2 BW ※ ※Water pressure hose
Length of hose (L) mm

Water pressure hoses

No.mark: Without coupler
BW: B, single ended coupling (Hose side)
No. mark: One side coupler
BW: B, single ended coupling (Hose side)•Fittings are stainless steel. Designed for water pressure use only.

No mark: no cover
S: Braided steel cover※Standard length 2mSpecifications
Items Max.working pressure Max.water flow

Dimension

Connecting
threadModel

Min. bend radius Inside diameter

Weight approx.

Outside diameter

Metal fitting

Hose

RW6

Water pressure couplers

Model number

B

6

W

J

B-typePort diameter (mm)•Made by stainless steel coupler.

For water pressure
J: Jack side H: Hose side

Jack side

Hose side

Specifications
Items
Model

B

Max.working pressure

Jack side
Model

Hose side

Connection thread

Model

Remarks

Connection thread

6W

For SA typePressure gauge / Gauge adapter (optional)
Pressure gauge specifications
Items Max.working pressure Max. Scale
Model

pressure gauge

1 scaleSize

PGO 63×1000
PGO 100×1000

Gauge adapter specifications
pressure gauge adapter

Items Max.working pressure
Model

FGW
FGW

Size

04
08

39

O.J. Power® / Accessorie for E series 72MPa

Accessories for jacks

S

Applicable Jack capacity(ton)S:for spring return type,
H:for hydraulic return typeNo Code:S & H(Common)

Ｅ－φＦ

Jack

• For taking the counter force ofthe jack with a press frame etc.

10FlangeFlange for E series jacks
Features

AF

Model number

Ｈ

Ｃ

φ

Ｄ

Dimensional drawing

Accessories for jacks

Ａ

AF-23

FlangeSpecifications
Model

Applicable Jacks

AF－5S
AF－5H
AF－10S
AF－10H
AF－15
AF－20
AF－23

E5S※
E5H※
E10S※
E10H※
E15S※
E20H※
E23S※
E30S※
E30H※
E50S※
E50H※
E70S※
E70H※
E100S※
E100H※
E200H※

AF－30
AF－50
AF－70
AF－100AF－200φＢCounter force
surfaceA
M42×1.5
M55×1.5
M57×1.5
M67×1.5
M67×1.5
M85×2
M85×2

B
80
90
100
110
110
140
140

C
20
24
24
27
27
35
35

M102×2

165

M125×2φＧ

Dimension

D
65
75
80
90
90
115
115

E
4
4
4
4
4
4
4

F
7
7
9
9
9
11
11

G
11
11
14
14
14
17.5
17.5

H
7
7
9
9
9
11
11

40

135

4

13.5

20

190

50

160

6

13.5

M146×3

235

60

195

6

18

M180×3

270

70

230

6

18

26

18

M250×43608020 3156

84

227

3211

227

Example of usage
Allowable
Weight approx.
Used bolt
pulling load
Nos.of bolts
Bolt strength,above 10.9 （Hexagon socket bolt）

15
15
30
30
30
45
45

M6×25L
M6×30L
M8×30L
M8×30L
M8×30L
M10×40L
M10×40L

4
4
4
4
4
4
4

0.6
0.8
1.0
1.3
1.3
2.7
2.7

13

65

M12×45L

4

4.2

20

13

97

M12×55L

6

6.3

26

18

185

M16×70L

6

12.5

185

M16×80L

6

17.5

39015 M20×90LM

84

33.1

Notes.① Pushing load of the jack should be formed in a way that, it is received by entire flange surface.
② The allowable loading capacity is determined from the flange and bolt strength.
Besides, if additional load exceeding the above applies, it will be separately manufactured.

Base for E series single
acting jacks

Dimensional drawing

Features

EB

Model number

ｅ－φｆ

10

S

Base
Applicable jack capacity(ton)ｇ

S:for spring return typeｊ

EB-23S
Applicable Jacks

EB－5S
EB－10S
EB－15S
EB－23S
EB－30S

E5S※
E10S※
E15S※
E23S※
E30S※

Example of usageｂ

Specifications
Model

ｉ

φｄ

• For stabilizing the hydraulic jack.

b
17
20
22
25
25

d
100
135
150
165
180

Dimension

e
2
2
2
4
4

f
7
9
11
11
11

g
28
35
42
55
75

i
11
14
18
18
18

j
7
9
11
11
11

Weight approx.
Used bolt
Nos.of bolts（Hexagon socket bolt）

M6×20L
M8×20LM10×25L
M10×25L
M10×25L

1.1
2.3
3.1
4.2
5.0

2
2
2
4
4

Notes.① This base is for stabilizing the hydraulic jack and doesnot consider the pulling force.

Base for E series doubleacting jacks

Dimensional drawingａApplicable jack capacity(ton)φｄ• For stabilizing the hydraulic jack.

E5H※
E10H※
E20H※
E30H※

a
M27×2
M36×2
M45×2
M36×2

b
17
20
25
25

Dimension

Notes.① This base is for stabilizing the hydraulic jack and pulling force is not considered.

40

Example of usageｃSpecifications
EB－5H
EB－10H
EB－20H
EB－30H

H:for hydraulic return typeｂ

EB-20H
Applicable Jacks

10

Base

Features

Model

EB

Model number

c
30
36
42
50

d
100
135
165
180

Weight approx.

1.1
2.4
4.4
5.2

H

O.J. Power® / Accessorie for E series 72MPa

EBP

Model number

Accessorie for jacks

10

S

Piston baseApplicable Jack capacity(ton)Piston base for E series jacks

S:for spring return type,
H:for hydraulic return typeFeatures• To expand load receiving area by the rod end of the jack.

φＢ

Ｃ
Ｇ

Ｆ

Ｃ
Ｈ

Ａ

Ａ

EBP－23S

φＤ

φＤ

EBP－20H（Fig.2）（Fig.1）

Example of Usage

Specifications
Model

Applicable Jacks

FigureEBP－5S
EBP－5H
EBP－10S
EBP－10H
EBP－15S
EBP－20H
EBP－23S
EBP－30S
EBP－30H

E5S※
E5H※
E10S※
E10H※
E15S※
E20H※
E23S※
E30S※
E30H※

Fig.1
Fig.2
Fig.1
Fig.2
Fig.1
Fig.2
Fig.1
Fig.1
Fig.1

Dimension

A
M20×2
M18×1.5
M27×2
M27×2
M33×2
M36×2
M40×2
M36×2
M36×2

B
70
70
90
90
105
110
120
130
130

C
25
25
27
27
30
32
35
40
40

D
32
32
42
42
48
52
58
62
62

Weight approx.

E
15
15
17
17
20
22
22
22
22

F
－
17
－
19
－
22
－
－
－

G
36
－
48
－
54
－
59
64
64

Screw-in type saddles for E series jacks

H
11
－
21
－
24
－
24
24
24

0.5
0.5
1.0
0.9
1.7
1.6
2.4
2.9
2.9

Model number

Remarks

E5S1.5 Not applicable－
E10S2.5 Not applicable
－
－
－
－
－
－

ETS

Accessories for jacks

Ｅ

Dimensional drawing

φＢＥ

Dimensional drawing

10

Screw-in type saddle

Features

Applicable jack capacity(ton)• Standard saddle is push-in type. When using upside down, please use screw-in type saddle.

Dimensional drawing

Ｄ

Ｅ

Ｃ

φＢ

Ａ

ETS－23Specifications
Model

Applicable Jacks

ETS－5
ETS－10
ETS－15
ETS－23A
ETS－23B

E5S※
E10S※
E15S※
E23S2.5
E23S※
E30S※
E30H※
E50H※
E70H※
E100H※
E200H※

ETS－30ETS－50ETS－70
ETS－100
ETS－200

Dimension

Weight approx.

Remarks

A
M20×2
M27×2
M33×2
M40×2
M40×2

B
25
35
40
50 －0.2
－0.4
50

C
13
16
16
14
21

D
13
16
16
14
21

E
18
22
23
22
29

0.1
0.1
0.2
0.3
0.3

E5S1.5 Not applicable
E10S2.5 Not applicable－
E23S2.5 exclusive for
E23S2.5 Not applicable

M36×2

50

24

24

34

0.3

－

M45×2
M50×3
M65×3
M90×3

65
75
90
127

29
33
38
53

29
33
38
53

41
47
53
72

0.7
1.0
1.7
4.5

－
－
－
－

41

O.J. Power® / Accessorie for E series 72MPa

E C Ⅰ

Model number

Accessories for jacks

10 S R

E series
Hydraulic jack
Clevis

Clevis eye (Single) for E series jacks

SingleDimensional drawing
φｉｍApplicable jack capacity(ton)

Ｃ-ｎ

φｈ

S:for spring return type,
H:for hydraulic return typeｊ

R:Rod side, H:Head side

ｄ
ｋ

f

ｃ

Accessories for jacksℓSpecifications

EC I－15SR

Dimension

Applicable Jacks

Model

ECI-20HH

d

f

20

27

20

40

20

12

45

65 M20×2 11

0.3

28

38

28

56

28

15

62

90 M27×2 16

0.8

33

43

33

65

35

17

70 103 M33×2 19

1.3

40

52

40

80

40

20

85 125 M40×2 23

2.4

28

38

28

55

28

20

67

95 M36×2 16

0.9

E20H15 E20H25 40

52

40

80

40

22

87 127 M45×2 23

2.4

ｂ
ｄ

i

j

k

ℓ

m

n

Dimensional drawing

ｃ

ｆ

φｇ

e

h

＋0.3
＋0.1

Weightapprox.

c

E5S2.5 E5S7.5
ECI-5SR
E5S12.7 E5S18
E10S5 E10S10
ECI－10SR E10S15 E10S20
E10S25 E10S30
E15S2.5 E15S5
E15S10 E15S15
ECI－15SR
E15S20 E15S25
E15S30 E15S35
E23S2.5 E23S5
E23S10 E23S16
ECI－23SR
E23S21 E23S25
E23S30 E23S34.5
E10H3 E10H8
ECI－10HH
E10H15 E10H25

－0.1
－0.3

φｉ
ｍ

a

Specifications
Model

E5H3
E5H15
E10H3
ECI－10HR
E10H15E20H5ECI－20HR
E20H25

E5H8

ECI－5HREC I－20HR

Dimension

Applicable Jacks

b

c

d

e

f －0.3－0.1

gi ＋0.1

67

47

20

27

16

20

40

20 M18×1.5 11

0.4

28

38

18

28

55

28 M27×2 16

0.9

40

52

20

40

80

40 M36×2 23

2.6

E10H8
90 62
E10H25
E20H15120 80＋0.3mnWeightapprox.

a

Notes.ECI-10SR will be used for the head side clevis of E5H※.
φｉC－nDimensional drawing

ｏ

ｍ

ｊ

ｄ

ｃ

ｆ

ｋ

Specifications
Model

EC I－3042

SR
ECI－30 HH
HR
HH
ECI－50HRℓApplicable Jacks

Dimension

i

＋0.3
＋0.1

j

k

ℓ

m

n

o

84 132 M36×2 27

95

Weightapprox.

cdf

E30S12.5 E30S20
48
E30H20 E30H35

60

48

48

24

E50H15 E50H35
60
E50H5075

60

60

30 105 165 M45×2 35 120 5.8

－0.1
－0.3

3.0

O.J. Power® / Accessorie for E series 72MPa
Model number

Accessories for jacks

E C Y

10 S R

E series
Hydraulic jack
Clevis

Clevis eye (double) for E series jacks

DoubleApplicable jack capacity(ton)S:for spring return type,
H:for hydraulic return typeℓ

Dimensional drawingｋｇ

R:Rod side, H:Head side
ｊ

ｆ

Ｃ
-ｎ

ECY－15SRｍｄSpecifications
Dimension

Applicable Jacks

Model

ECY－5SR
ECY－10SR
ECY－15SR
ECY－23SR
ECY－30SR
ECY－10HH
ECY－20HH
ECY－30HH
ECY－30HR
ECY－50HH

E5S2.5E5S7.5 E5S12.7 E5S18
E10S5
E10S10 E10S15 E10S20
E10S25
E10S30
E15S2.5 E15S5 E15S10 E15S15
E15S20
E15S25 E15S30 E15S35
E23S2.5 E23S5 E23S10 E23S16
E23S21
E23S25 E23S30 E23S34.5
E30S12.5 E30S20
E10H3
E10H8 E10H15 E10H25
E20H15 E20H25

－0.1
－0.3

＋0.3
＋0.1

Weightapprox.

c
20

d f
27 20

g
40

h i
40 20

j
12

k
50

ℓ
m
n
70 M20×2 11

28

38

28

55

55

28

15

68

96 M27×2 16

1.0

33

43

33

65

65

35

17

77 110 M33×2 19

1.6

40

52

40

80

80

40

20

92 132 M40×2 23

3.0

48
28
40

60
38
52

48
28
40

95
55
80

95
55
80

48
28
40

24 114 162 M36×2 27
20 75 103 M36×2 16
22 99 139 M45×2 23

5.2
1.2
3.3

95

95

Accessories for jacks

ｈ

φｉ

0.4

E30H20E30H35

48

60

48

48

24 114 162 M36×2 27

5.2

E50H15

E50H35 E50H50

60

75

60 120 120 60

30 140 200 M45×2 35

10ａDimensional drawing

b

ｇ

e

ｆ

ｈ

φｉ

-ｎ

ECY－20HRＣｍｄSpecifications
Applicable Jacks

Model

ECY－5HRECY－10HR
ECY－20HR

E5H3
E10H3
E20H5

E5H8
E5H15
E10H8 E10H15 E10H25
E20H15 E20H25

Dimension

a
73
97
132

b
53
69
92

d
27
38
52

e
16
18
20

－0.3

f －0.1
20
28
40

j
40
55
80

k
40
55
80

＋0.3

f ＋0.1mn
20 M18×1.5 11
28 M27×2 16
40 M36×2 23

Weightapprox.

0.5
1.2
3.6

Notes.① Please use ECY-10SR, when mounting the clevis on the head side of E5H※.

Mounting example
Rod clevis(ECY-30HR)and head clevis(ECY-30HH)mounted on E30H20

43

O.J. Power® / Accessorie for E series 72MPa

E C S

Model number

Accessories for jacks

10

E series hydraulic jack
ClevisAccessories for E series clevis

Set items
Applicable jack capacity(ton)Accessories for jacks

Specifications
ECS（Combination form）

Q’ty
1
2
2

Parts namePin
WasherSplit pin

Pin
Specifications
Model

ECP

ECP－5

Dimensional drawing

ECP－10φd

ECP－15φc

ECP－20
ECP－30
ECP－50baApplicable clevis
EC I－5SR
EC I－10SR
EC I－10HR
EC I－10HH
EC I－15SR
EC I －20HR
EC I－23SR
EC I－20HH
EC I－30
EC I－50

Dimension

a
65

b
53
ECY－5HRECY－10SR73
ECY－10HR 85
ECY－10HH85
ECY－15SR 95
ECY－20HR
ECY－23SR 115 102
ECY－20HH
135 122
ECY－30165 150
ECY－50

c
20

d
2.0

28

3.2

35

3.2

40

5.0

48
60

5.0
6.3

Washer(2pcs as 1set)
Specifications
Model

ECW

ECW－5

Dimensional drawing

ECW－10
ECW－15ECW－20φeg

φf

Split pin(2pcs as 1set)

ECW－30
ECW－50

ECC－5
ECC－10
ECC－15
ECC－2044

EC I－5SR
EC I－10SR
EC I－10HR
EC I－10HH
EC I－15SR
EC I －20HR
EC I－23SR
EC I－20HH
EC I－30
EC I－50

ECY－5HRECY－10SR
ECY－10HR
ECY－10HH
ECY－15SR
ECY－20HR
ECY－23SR
ECY－20HH
ECY－30
ECY－50Dimension

e
22

f
37

g
3.2

30

50

4.5

36

60

6

42

72

6

52
62

92
105

8
9

Specifications
Model

ECC

Applicable clevis

ECC－30
ECC－50Applicable clevis
EC I－5SR
EC I－10SR
EC I－10HR
EC I－10HH
EC I－15SR
EC I －20HR
EC I－23SR
EC I－20HH
EC I－30
EC I－50

ECY－5HRECY－10SR
ECY－10HR
ECY－10HH
ECY－15SR
ECY－20HR
ECY－23SR
ECY－20HH
ECY－30
ECY－50Dimension

Outer dia×length
φ2×32L
φ3.2×40L
φ3.2×50L
φ5×56L
φ5×71L
φ6.3×80L

O.J. Power® / Power jack parts drawings

E series list of parts drawings

2

1

3

19

4

4

30

8 13

50

10

6

12

7

13

8

14

21

19
4

7

5

10

8

12

14

50

22

6

50

21
22

15
17

21 22 17 41 28 15

Parts drawings

14

5

13 15 17

18

E5S1.5E5S7.5

E10S2.5

E5S2.5～E5S18
E15S2.5 E23S2.5

31 10

19

4

12

4

5

8

13

8

10

5

14

5

3

2

1

4

19

19

12

1

31 10

1

28
12
13

40

8

14

13
29

14

50

21

50

22

50
21

15

22

21 22 15 27 36 18 30

15
17 18

E15S15

E10S5～E10S30
E15S5～E15S35
E23S5～E23S34.5 ※E30S12.5 E30S20 ※18 27 30 36

E50S10（With handle）

E50S5
E50S1018

E100S10

E50S16（With handle）

E50S32
E70S15 E70S33
E100S10 E100S20 of No.18 two pcs.

Warning: Jack marked with ※ No.17 (Bolt B) will
become No.27 (Spring hanger)
Regarding it’s shape, please refer toNo.27 on right figure.

Parts lists（E※※S※※type）
No.
Parts name
1 Saddle
2 Spring-C
3 Steel ball
4 Rod cover
5 Thread protector
6 Cap nut
7 Gasket
8 Bolt-A
10 Spring holder

Q’ty No.
Parts name
1 12 Washer
1 13 Piston rod
1 14 Cylinder tube
1 15 Spring-A
1 17 Bolt-B
1 18 Plug
1 19 Dust seal
1 21 Back up ring
1 22 O－ring

Q’ty No.
Parts name
1 27 Spring hanger
1 28 Spring holder-B
1 29 Spring-B
1 30 Spring holder-C
1 31 Bolt-C
1or2 36 Bushing
1 40 Carry ring
1 41 Gasket-B
1 50 Coupler

Q’ty
1
1
1
1
4
1
2
1
1

45

O.J. Power® / Power jack parts drawings

Parts drawings

E series list of parts drawings

1

33

19

32

4

1

5

4

35

5

34

35

13

34

14

50

13

19

14
22

3

33

E5H3～E5H15
E10H3～E10H25
E20H5～E20H25

3

2

4
5
34

37

23

38

24

39

16

13
14
21
22

50

23 24

16

50

E30H20E20H50E30H35

33 32

1

19

19

4

4

5

5

35

35

34

34

3

2

1

33
32
Bushing

14
13

13

14

40

39

39
38

21

38

22

21

37

22
16 24 23 50

37

E50H15（with handle）

E50H35
E70H15

33 32

35

22

E10H8

1

19

32

21

21

2

E50H50（With carry ring）
E70H35（With carry ring）

23 24 26

25 16

50

E100H35

E200H35

Parts lists（E※※H※※type）
No.
Parts name
1 Cap or saddle
2 Spring-C
3 Steel ball
4 Rod cover
5 Thread protector
13 Piston rod
14 Cylinder tube
16 Jack end

46

Q’ty No.
Parts name
1 19 Dust seal
1 21 Back up ring
1 22 O－ring
1 23 O－ring
1 24 Back up ring
1 25 Screw
1 26 Steel ball
1 32 O－ring

Q’ty No.
Parts nameQ’ty
1
1 33 Back up ring1
2 34 O－ring
1
1 35 Back up ring1
1 37 Piston
1
1 38 O－ring
2
1 39 Back up ring2
1 40 Carry ring
1 50 Coupler＋Bushing（E100H35 Above） 2

O.J. Power® / Power jack parts drawings

E series list of parts drawings
4 19 1515
41

4 19 17 18

14
12

28 8

30

12a 4 14

15 21 22

13

22

50

50

21 15 28 8

EF20S1.5

EL30S6

EF10S1.1～EF50S1.5
EL10S3.5 EL20S4.5
EF100S1.5（With handle）

EL50S6EL100S5.5（With Carry ring）

Parts listes（EL※※S※※、EF※※S※※、EC※※S※※type）
No.
Parts name
1 Saddle
4 Rod cover
5 Thread protector
8 Bolt-A
12 Washer
12a Gasket-B
13 Piston rod
14 Cylinder tube
15 Spring-A

14
13
45
22
21
44 43 42

Q’ty No.
Parts name
1 17 Bolt-B
1 18 Pulg
1 19 Dust seal
1 21 O－ring
1 22 Back up ring
1 23 O－ring
1 24 Back up ring
1 28 Spring holder-B
1 30 Spring holder-C

4 19 1
5
35
34
14
13

Parts drawings

13 30 1750

46 24 23 18
EC30S6EC12S4（With No.46） EC12S7.5
EC20S5（With No.46）
EC20S15（With handle）
EC30S15（With handle）

Q’ty No.
Parts name
1 41 Stopper ring
1 42 O－ring
1 43 Back up ring
1 44 Dust seal-B
1 45 Hollow rod
1 46 Retaining ring
1 50 Coupler
1
1

Q’ty
2
1
1
1
1
1
1

4 19

33
32

33
32

35
34

14

22
21

45
44
43
42
23 24

50

43

13

42

45
22
21

50

44 49

EC30H25（With handle）

EC30H15 EC60H25（With Carry ring）
EC90H25（With Carry ring）
EC100H4 EC140H20（Without No.5）（With Carry ring)

24 23

50

EC30H20

EC50H25 EC100H15
EC100H30 EC200H15

EC200H35

Parts listes（EC※※H※※type）
No.
Parts name
1 Saddle
4 Rod cover
5 Thread protector
13 Piston rod
14 Cylinder tube
19 Dust seal
21 O－ring
22 Back up ringQ’ty No.
Parts name
1 23 O－ring
1 24 Back up ring
1 32 O－ring
1 33 Back up ring
1 34 O－ring
1 35 Back up ring
1 40 Carry ring
2 42 O－ring

Q’ty No.
Parts nameQ’ty
1
1 43 Back up ring1
1 44 Dust seal-B
1
1 45 Hollow rod
1
1 49 Retaining ring
1 50 Coupler＋Bushings（EC90H25 above） 2
1
2
1

47

O.J. Power® / Power jack parts drawings

Parts drawings

E series and SA Water pressure jacks list of parts drawings

ET100H15

ET100H50

ET50H5（Without No.25・26）
ET50H10（Without No.25・26）
ET100H5 ET100H30

ET300H30

ET300H50

ET200H15 ET200H30
ET500H30

ET200H50 ET200H100
ET300H100
ET500H50 ET500H100

Parts listes（EL※※S※※、EF※※S※※、EC※※S※※type）
No.
Parts name
1 Head4 Rod cover
5 Thread protector
13 Piston rod
14 Cylinder tube
16 Jack end
19 Dust seal
21 Back up ring
22 O-ring
23 O-ringQ’ty No.
Parts name
1 24 Back up ring
1 25 Screw
1 26 Steel ball
1 32 U‐packing
1 33 Back up ring
1 34 O-ring
1 35 Back up ring
2 37 Piston
1 38 O-ring
1 39 Back up ringQ’ty No.
Parts name
1 40 Carry ring
2 41 Piston packing
2 42 Back up ring
1 43 Piston nut
1 44 Hexagon socket set screw
1 45 Hexagon socket set screw
1 46 Hexagon socket set screw
1 50 Couplings
1 51 Wear ring
2

1

31
19

5

4
10
8
21
22
23
15

12
13
14
50
30

SA22S5
SA10S5 SA10S10SA22S10 SA50S5

27 18

Parts listes（SA※※S※※type）
No.
Parts name
1 Saddle
4 Rod cover
5 Handle
8 Hexagon socket bolt
10 Spring holder-A
12 Washer
13 Piston rod
14 Cylinder tube
15 Spring48

Q’ty No.
Parts name
1 18 Pulg
1 19 Dust seal
1 21 Back up ring
1 22 O-ring
1 23 Wear ring
1 27 Spring hanger
1 30 Spring holder-B
2 31 Hexagon socket bolt
1 50 Coupler

Q’ty
1
2
2
1
1
1
1
1
1

Q’ty
2
1
1
1
1
1
1
2
3

O.J. Power® / Accessorie for E series 72MPa

TWA type Hand Pumps

Hand pump
Usable oil volume

for single-acting jacks(low-pressure relief)

Hydraulic circuit diagram(Low-pressure relief type)Features

Release valve• Pump body is made of a special, pressure-resistant steel.
• High and low pressure, two-stage oil delivery.
• For horizontal usage. Vertical usage with delivery port
downward is possible by adding additional parts. pleasecontact us for further information.

Horizontal usage

0.3

Model number

Low press
safety valve

High press safety valve

Handle bar
ＬＰＨＰ

Vertical usage

Oil tank

Nots) Additional parts is required

Safety valve (Low press.)
Safety valve (High press.)
Approx.

Release valve

Suction & delivery (Low press.)
Suction & delivery (High press.)

Handle bar
Oil tank

Approx.

Air vent plug
Oil check bar and oil supply port

Hook

Hand pumps

Dimensional drawing

Approx.

TWA－0.3

Approx.

Approx.
Approx.

Dimensional drawing
Safety valve (High press.)
Safety valve (Low press.)

Approx.

Release valve

Suction & delivery (Low press.)
Suction & delivery (High press.)

Approx.

Handle bar
Oil tank

Approx.
Approx.

isApprox.
Approx.

Air vent plug
Oil check bar and oil supply port

Hook

Approx.

Approx.

TWA－0.7

Measurement at( ) is TWA-0.9 &TWA-1.3 (Same).

Dimensional drawing
Safety valve (High press.)
Safety valve (Low press.)

Air vent plug
Oil check bar and oil supply port

Approx.145
Approx.135

Release valve

Suction & delivery (Low press.)
Suction & delivery (High press.)

Approx.

Handle bar Hook
Oil tank
Approx.

TWA－2
Approx.

Approx.
Approx.

Specifications
Items Usable oil volume
Model

TWA－0.3
TWA－0.7
TWA－0.9
TWA－1.3
TWA－2

0.3
0.7
0.9
1.3
2

Working pressure (MPa)

Oil delivery (

High

High

Low

1

5

2

11

72

Low

3

/stroke)Connection port

Weightapprox.

NPT3/8
or
Rc3/8

3.5
6.6
7.8
8.5
10.0

Note) Use ISO VG10 hydraulic working oil or equivalent oil.

49

O.J. Power® / Accessorie for E series 72MPa

TWA type Hand Pumps

4

Model number
Hand pump
Usable oil volume

for single-acting jacks(low-pressure relief)

Hydraulic circuit diagram(Low-pressure relief type)Features• Pump body is made of a special, pressure-resistant steel.
• High and low pressure, two-stage oil output.
• For horizontal usage. Vertical usage with delivery port
downward is possible by adding additional parts. pleasecontact us for further information.

Release valve
Low press
safety valve

High press safety valve

Handle bar
ＬＰＨＰ

Vertical usageNots) Additional parts is requived

Hand pumps

Horizontal usage

Oil tank

Dimensional drawing
Air vent plug
Oil check bar and oil supply port

Safety valve (High press.)
Safety valve (Low press.)

Approx.
Approx.

Release valve

Suction & delivery (Low press.)
Suction & delivery (High press.)

TWA－4

Handle bar
Oil tank

Hook

Approx.

Approx.

Approx.

Approx.
Approx.

Dimensional drawing
Air vent plug
Oil check bar and oil supply port

Safety valve (High press.)
Safety valve (Low press.)

Approx.190
Approx.135

Release valve

Suction & delivery (Low press.)
Suction & delivery (High press.)

Handle bar
Hook
Oil tank

Approx.

Approx.

TWA－6.5

Approx.

Approx.
Approx.

Dimensional drawing
Air vent plug
Oil check bar and oil supply port

Safety valve (High press.)
Safety valve (Low press.)

Approx.208
Approx.135

Release valve

Suction & delivery (Low press.)
Suction & delivery (High press.)

Handle bar
Oil tank

Approx.

Hook

Approx.

TWA－10Approx.

Specifications
Items Usable oil volume
Model

TWA－4
TWA－6.5
TWA－104
610Working pressure (MPa)

Oil delivery (

High

Low

High

Low

72

3

2

11

Note) Use ISO VG10 hydraulic working oil or equivalent oil.

50

Approx.
Approx.

/stroke)Connection port

Weightapprox.

NPT3/8
or
Rc3/8

13.0
16.5
24.0

O.J. Power® / Hand pumps 72MPa

TWA type Hand Pumps

Model number
Hand pump
Usable oil volume

for single-acting jacks(low-pressure unload)

Hydraulic circuit diagram(Low-pressure unload type)Features• Pump body is made of a special, pressure-resistant steel.
• High and low pressure, two-stage oil output.
• For horizontal usage. Vertical usage with delivery port
downward is possible by adding additional parts. pleasecontact us for further information.

Horizontal usage

Release valve
Safety valve (High press.)

Unload valve

Handle bar

Vertical usage

Oil tank

Nots) Additional parts is requived

Safety valve (High press.)
Unload valve

Approx.

Release valve

Approx.

Approx.

Suction & delivery (Low press.)
Air vent plug
Suction & delivery (High press.) Oil check bar and oil supply port
Handle bar Hook
Approx.
Oil tank

Hand pumps

Dimensional drawing

Approx.
Approx.

Dimensional drawing

Safety valve(High press.)
Unload valve

Air vent plug
Oil check bar and oil supply port

Approx.

Release valve

Suction & delivery (Low press.)
Suction & delivery (High press.)
Handle bar Hook
Oil tank

Approx.

Approx.

Approx.

Approx.
Approx.

Release valve
Safety valve (High press.)
Unload valve

Approx.

Dimensional drawing

Air vent plug
Oil check bar and oil supply port
Min. Approx.
Retract port

Approx.

Min.
Max. Approx.
Approx.
HandleOil tank
Drain port

Approx.

• Low/high two-stage large output pump.
• High quantity of usable oil.
• Suitable for large jacks.
※Not applicable for vertical usage.

Approx.

Features

Specifications
Items Usable oil volume
ModelWorking pressure (MPa)

Oil delivery (

High

High

Low

/stroke)Low

Connection port

Weightapprox.

Note) Use ISO VG10 hydraulic working oil or equivalent oil.

51

O.J. Power® / Accessorie for E series 72MPa

TWAD type Hand pumps
for double-acting jacks(low-pressure relief)
Features• Pump body is made of a special, pressure-resistant steel.
• High and low pressure, two-stage oil output.
• For horizontal usage. Vertical usage with delivery port
downward is possible by adding additional parts. pleasecontact us for further information.

0.9

D

Model number
Hand pumpwith manual control valve
Usable water volume

Hydraulic circuit diagram(Low-pressure relief type)
Manual control valve
Release valve

Safety valve(Low press.)

Safety valve (High press.)
Handle bar

Hand pumps

Oil tank

Dimensional drawing
Release valve
N

Safety valve (High press.)
Safety valve (Low press.)

ＰＴ

A

ＡＢ

Suction & delivery (Low press.)
Suction & delivery (High press.)

Manual control valve

Handle bar Hook
Oil tank

Approx.

φ57

TWAD－0.7 or TWAD－0.9

Air vent plug
Oil check bar and oil supply port

Approx.

Approx.

52 43

B

40

Approx.

Approx. 4 7 5 ( Approx. 6 0 0 )Approx. 6 8 0 ( Approx. 8 0 0 )35

Measurement at( ) is TWAD-0.9(Same).

Dimensional drawing
Release valve

Approx.

Safety valve (High press.)
Safety valve (Low press.)

Suction & delivery (Low press.)
Suction & delivery (High press.)
Handle bar Hook
Oil tank

Approx.
68

TWAD－1.3

Approx.

Manual control valve

Air vent plug
Oil check bar and oil supply port

Approx.

Approx.
Approx.

Dimensional drawing
Release valve

Air vent plug
Safety valve (High press.)
Safety valve (Low press.) Oil check bar and oil supply port

A

120

ＰＴ

52 43

N

Ａ Ｂ

Approx.150
Approx.140

B

Suction & delivery (Low press.)
Suction & delivery (High press.)

約45ﾟ

Handle bar
Oil tank

Hook

Approx.

TWAD－2

Approx.

40

Approx. 4 9 0
Approx. 6 7 0

40

Specifications
Items Usable oil volume
Model

TWAD－0.7
TWAD－0.9
TWAD－1.3
TWAD－2

0.7
0.9
1.3
2

Working pressure (MPa)

Oil delivery (

High

High

72

Note) Use ISO VG10 hydraulic working oil or equivalent oil.

52

Low

3

2

/stroke)Low

11

Connection port

Weightapprox.

NPT3/8 or
Rc3/8

7.6
8.8
9.5
11.0

O.J. Power® / Hand pumps 72MPa

TWAD type Hand pumps

4

D

Model number
Hand pumpwith manual control valve

for double-acting jacks(low pressure relief)

Usable water volume

Hydraulic circuit diagram(Low-pressure relief type)Features• Pump body is made of a special, pressure-resistant steel.
• High and low pressure, two-stage oil output.
• For horizontal usage. Vertical usage with delivery port
downward is possible by adding additional parts. pleasecontact us for further information.

Manual control valve
Release valve
Safety valve(High press.)

Safety valve(Low press.)

Handle bar

Horizontal usage

Vertical usageNots) Additional parts is requived

Oil tank

Release valve
Ｎ

Safety valve (High press.)
Safety valve (Low press.)Ａ

Oil check bar and oil supply port

ＡＢ

150

ＰＴ

52 43

Approx.165
Approx.140

Ｂ

Suction & delivery (Low press.)
Suction & delivery (High press.)
Handle bar
Approx.
Oil tank

Hook

Approx. 1 5 0

Manual control valve

Hand pumps

Dimensional drawing

TWAD－440

40

Approx.

Approx. 6 1 5Approx. 8 0 0

Dimensional drawing
Safety valve (High press.)
Safety valve (Low press.)

Release valve
Ｎ

Air vent plug
Oil check bar and oil supply port
210

ＰＴ

52 43

Ａ

Ａ Ｂ

Approx.195
Approx.140

Ｂ

Suction & delivery (Low press.)
Suction & delivery (High press.)

Hook

Approx. 1 5 0

Approx. Handle bar
Oil tank
Ｂ
Ｎ
Ａ

TWAD－6.540

40

Approx.

Approx. 6 1 5Approx. 8 0 0

Dimensional drawing

Ａ

250

ＰＴ

52 43

Ｎ

ＡＢ

Approx.215
Approx.140

Ｂ

Air vent plug
Oil check bar and oil supply port

Safety valve (High press.)
Safety valve (Low press.)

Release valve

Suction & delivery (Low press.)
Suction & delivery (High press.)
Hook

Handle bar
Oil tank

Approx. 1 5 0

Approx.
Ｂ
Ｎ
Ａ

TWAD－10
Approx.

40

Approx. 7 7 0
Approx. 9 5 0

40

Specifications
Items Usable oil volume
Model

TWAD－4TWAD－6.5
TWAD－104
6
10Working pressure (MPa)

Oil delivery (

High

Low

High

Low

72

3

2

11

/stroke)Connection port

Weightapprox.

NPT3/8
or
Rc3/8

14.0
17.5
25.0

Note) Use ISO VG10 hydraulic working oil or equivalent oil.

53

O.J. Power® / Hand pumps 72MPa

TWAD type Hand Pumps

Model number
Hand pumpWith manual control valve

for double-acting jacks(low-pressure unload)Usable oil volume

Hydraulic circuit diagram(Low-pressure unload type)Features• Pump body is made of a special, pressure-resistant steel.
• High and low pressure, two-stage oil output.
• For horizontal usage. Vertical usage with delivery port
downward is possible by adding additional parts. pleasecontact us for further information.

Manual control valve
Release valve
Unload valve

Safety valve (High press.)
Handle bar

Hand pumps

Oil tank

Dimensional drawing

Approx.

Release valve

Safety valve (High press.)
Unload valve

Suction & delivery (Low press.)
Air vent plug
Suction & delivery (High press.) Oil check bar and oil supply port

Manual control valve

Approx.

Handle bar
Oil tank Hook

Approx.

TWAD－2.3
Approx.

Approx.
Approx.

Dimensional drawing
Safety valve (High press.)
Safety valve (Low press.)

Air vent plug
Oil check bar and oil supply port

Approx.

Release valve

Suction & delivery (Low press.)
Suction & delivery (High press.)
Approx.

Handle bar
Oil tank

Hook

Approx.

Manual control valve

TWAD－6
Approx.

Approx.
Approx.

Dimensional drawing
Safety valve (High press.)
Unload valve

Approx.

Release valve

Air vent plug
Oil check bar and oil supply port
Manual control valve

Min
Max. .

Approx.

• Low/high two-stage large output pump.
• High quantity of usable oil.
• Suitable for large jacks.
※Not applicable for vertical usage.

Approx.

TWAD－8Features

Min. Approx.

HandleOil tank
Drain port

Specifications
Items Usable oil volume
ModelWorking pressure (MPa)

Oil delivery (

High

High

Note) Use ISO VG10 hydraulic working oil or equivalent oil.

54

Low

/stroke)Low

Connection port

Weightapprox.

O.J. Power® / Hand pumps 72MPa
Model number

LTWA type Lightweight Hand Pumps

Lightweight hand pump
Usable oil volume

for single-acting jacks
Features• Ultralight, rust-resistant construction.
• Setions of the tank that will not be pressurized, the handle socket,
stand, and other parts are made of aluminum.

Dimensional drawing
Safety valve (High press.)
Safety valve (Low press.)

Approx.

Release valve

Suction & delivery (Low press.)
Suction & delivery (High press.)

Approx.

Hook

isApprox.

Approx.
Approx.

Hand pumps

Handle bar
Oil tank

Approx.

Air vent plug
Oil check bar and oil supply port

Specifications
Items Usable oil volume
ModelWorking pressure（MPa）

Oil delivery (

High

High

Low

/stroke)Connection port

Low

Weightapprox.

Model number

FPA type Foot Pumps

Foot pump
Usable oil volume

for single-acting jacks
Features• Foot control pump.
• Hands-free operation.
• Unpressurized parts i.e.oil tank, foot pedal andbase plate etc. are made of alumium.

Dimensional drawing
Release valve lever

Approx.

Safety valve (High press.)
Safety valve (Low press.)

Hydraulic circuit diagram

Suction & delivery (Low press.)
Suction & delivery (High press.)

Oil tank

Air vent plug
Oil check bar and oil supply port
Approx.
Approx.
Approx.

Foot pedal

Approx.

Approx.

Specifications
Items Usable oil volume
ModelWorking pressure（MPa）

Oil delivery (

High

High

Low

/stroke)Low

Connection port

Weightapprox.

55

O.J. Power® / Hand pump parts
Model number

Hand Pump Parts Drawings

Hand pump typeParts kits

Refer to the next page for part names.

Hand pumps

Parts drawing for TWA, LTWA, and TWAD types※See below for TWA-0.3

Parts drawing for TWA-0.3

Parts drawing for unload type.
Unload valve

Specifications
Part kits

Parts No.

Parts drawing for Oil tank
TWA-2
TWA-4
TWA-6
TWA-6.5
TWA-10
TWAD-2TWAD-4TWAD-6
TWAD-6.5
TWAD-10Shown above
Parts are sold by the kit.
Note) TWA—PBK is for TWA—0.3 only.
No.61∙62∙73∙133 are not included.

56

O.J. Power® / Hand pump parts

Hand Pump Parts Lists
TWA・LTWA・TWAD types

Notes.① O-rings forare hardness: 90˚.
② TWAD type is attached ODV–3 to TWA type.
③ Q’ty of No.61, No.62 for TWA–0.3, 2.3, 6 is 4.

(Part names are identical for each pump.)

No.

Q’ty

1
Handle socket
Handle bar
1
Hook1
Tie rod1
Oil check bar
1
Tank stand1
Oil tank
1
Pump body1
O-ring1
Net
1
O-ring1
Nut
1O-ring1
O-ring1
Plunger pin
1
Handle pin
1Snap pin2O-ring1
Back-up ring
1
O-ring1
Back-up ring
1
Plunger1
Steel ball
1
Spacer1
Pan head screw
1
Steel ball
1
Steel ball1
Spring1
Copper packing
1
Delivery plug
1
Steel ball1
Spring1
Copper packing
1
Delivery plug
1
Steel ball1
Spring1
Adjusting screw
1
O-ring1
Cap
1
Steel ball
1
Ball stay1
Spring1
Adjusting screw
1
O-ring1
Cap
1
Steel ball1
O-ring1
O-ring1
Gland nut
1
Release valve grip 1
Stop ring
1
Steel ball（3）
Hex. socket Head-less set screw （3）Plug1
Rubber grip
1
Poppet1
O-ring1
Back-up ring1
Cone valve
1
Spring1
O-ring1
Back-up ring
1
Valve body1
O-ring1
Back-up ring
1
O-ring1
Adjusting screw
1
Cap
1
Plug
1
Spacer1

TWA‐0.3

TWA‐0.7

TWA‐0.9

TWA‐1.3

○
○
○
○
○
○
○
○
G40
○
G40
○
P11
P10
○
○
5
P6
P6
NO.16
NO.16
○
φ5
○
○
φ5
φ7.2
○
○
○
φ7.2
○
○
○
φ6
○
○
S9
○
φ5
○
○
○
S9
○
φ6
No.7
P16
○
○
―
φ6
M8×8
―
○
―
―
―
―
―
―
―
―
―
―
―
―
―
―
―

○
○
○
○
○
○
○
○
G55
○
G55
○
P12
P10
○
○
8
P9
P9
P28
P28
○
φ6
○
○
φ6
φ8
○
○
○
φ8
○
○
○
φ7.2
○
○
S12.5
○
φ3.5
○
○
○
S12.5
○
φ8
No.7
P16
○
○
○
φ6
M8×8
○
○
―
―
―
―
―
―
―
―
―
―
―
―
―
○
―

○
○
○
○
○
○
○
○
G55
○
G55
○
P12
P10
○
○
8
P9
P9
P28
P28
○
φ6
○
○
φ6
φ8
○
○
○
φ8
○
○
○
φ7.2
○
○
S12.5
○
φ3.5
○
○
○
S12.5
○
φ8
No.7
P16
○
○
○
φ6
M8×8
○
○
―
―
―
―
―
―
―
―
―
―
―
―
―
○
―

○
○
○
○
○
○
○
○
G55
○
G60
○
P12
P10
○
○
8
P9
P9
P28
P28
○
φ6
○
○
φ6
φ8
○
○
○
φ8
○
○
○
φ7.2
○
○
S12.5
○
φ3.5
○
○
○
S12.5
○
φ8
No.7
P16
○
○
○
φ6
M8×8
○
○
―
―
―
―
―
―
―
―
―
―
―
―
―
○
―

‐2、
‐4、 TWA‐6
TWA‐2.3 TWA
‐6.5、
‐10
○
○
○
○
○
○
○
○
G75
○
G80
○
P12
P10
○
○
8
P9
P9
P40
P40
○
φ6
○
○
φ6
φ8
○
○
○
φ8
○
○
○
―
―
―
S12.5
―
φ3.5
○
○
○
S12.5
○
φ8
No.7
P16
○
○
―
φ6
M8×8
―
○
○
P10
P10
○
○
P3
P3
○
P10A
P10A
P15
○
○
○
○

○
○
○
―
○
―
○
○
G55
○
―
―
P12
P10
○
○
8
P9
P9
P28
P28
○
φ6
○
○
φ6
φ8
○
○
○
φ8
○
○
○
φ7.2
○
○
S12.5
○
φ3.5
○
○
○
S12.5
○
φ8
No.7
P16
○
○
○
φ6
M8×8
○
○
―
―
―
―
―
―
―
―
―
―
―
―
―
○
―

○
○
○
―
○
―
○
○
G75
○
―
―
P12
P10
○
○
8
P9
P9
P40
P40
○
φ6
○
○
φ6
φ8
○
○
○
φ8
○
○
○
―
―
―
S12.5
―
φ3.5
○
○
○
S12.5
○
φ8
No.7
P16
○
○
―
φ6
M8×8
―
○
○
P10
P10
○
○
P3
P3
○
P10A
P10A
P15
○
○
○
○

LTWA‐0.7 LTWA‐0.9
○
○
○
○
○
○
○
○
G55
○
G55
○
P12
P10
○
○
8
P9
P9
P28
P28
○
φ6
○
○
φ6
φ8
○
○
○
φ8
○
○
○
φ7.2
○
○
S12.5
○
φ3.5
○
○
○
S12.5
○
φ8
No.7
P16
○
○
○
φ6
M8×8
○
○
―
―
―
―
―
―
―
―
―
―
―
―
―
○
―

○
○
○
○
○
○
○
○
G55
○
G55
○
P12
P10
○
○
8
P9
P9
P28
P28
○
φ6
○
○
φ6
φ8
○
○
○
φ8
○
○
○
φ7.2
○
○
S12.5
○
φ3.5
○
○
○
S12.5
○
φ8
No.7
P16
○
○
○
φ6
M8×8
○
○
―
―
―
―
―
―
―
―
―
―
―
―
―
○
―

Hand pumps

1
2
3
4
5
6
7
8
10
11
12
13
14
16
17
18
19
20
21
22
23
24
25
26
27
29
33
34
35
36
37
38
39
40
41
42
43
45
46
47
48
49
51
52
53
54
56
57
58
59
60
61
62
73
75
77
78
79
80
81
83
84
85
86
87
88
90
92
133
134

Parts name57

O.J. Power® / Hand pump parts
Model number

Hand Pump Accessories

TWA

0.7

M 4 PG ※ P

Pump type
Usable oil
M: Manifold with stop valve
B: Branch (without stop valve)
Number of jack connections
With pressure gauge stand, pressure gauge (100MPa)
K: with coupler (B-6J)
C: with coupler (C-6J)
Non-standard specifications (Ex: kN scale gauge)

Hand pump with pressure gauge (for single-acting jacks)

Hand pumps

Pressure gauge
Pressure gauge adapter

Combination contents
・Hand pump・Pressure gauge

TWA－0.7－PG

・Pressure gauge adapter
・Copper gasket

Hand pump with pressure gauge (for double-acting jacks)
Pressure gauge
Pressure gauge adapter

Combination contents
・Hand pump・Pressure gauge

・Pressure gauge adapter

TWAD－0.9－PG

・Copper gasket

Hand pump with quadruple manifold (for single-acting jacks)
Pressure gauge
Stop valve

TWA－0.7

Combination contents
・Hand pump・Manifold・Pressure gauge
Pressure gauge adapter

・Pressure gauge adapter
・Copper gasket
・Pump base

Pump base

Manifold

TWA－0.7－M4PGK・Coupler

Couplerpcs.

Hand pump with twin manifold (for double-acting jacks)
TWAD－1.3

Stop valve

Combination contents
・Hand pump・Manifold
Pump base

Manifold M2

TWAD－1.3－M2K

58

Coupler・Pump base・Couplerpcs.

O.J. Power® / Hand pump parts

Hand Pump Accessories
Pressure gauges
Features• The display unit is MPa.
• Model number is displayed with the diameter of pressure gauge and the full scale.
• When attaching a kN-scale hydraulic pressure guage,the bore and effective area of the jack cylinder must be specified.
The pressure gauge can only be used with that jack.
• If kN-scale is necessary, please let us know while ordering.
• Please oriented the direction of pressure gauge with the thickness of copper packing.

Pressure gauge combination list
Pressure gauge adapter

Parts
Pressure gauge

for single-acting jacks

Copper packing

for double-acting jacks

Manifolds

Hand pumps

CPGー04ー※CPGー06ー※CPGー08ー※

FGSー700ー04D
FGSー700ー08D＋Bushing
FGSー700ー08D

FGSー700ー04
PGOー63×1000
FGSー700ー06
PGOー75×1000
PGOー100×1000 FGSー700ー08

BranchＲｃ３/８

２５

approx.170

９０（Width３８）

FeaturesFeatures• Manifolds (M)・Used for operating two or more jacks at the same time.
・Jack to be operated is selectable.

• Branch (B)・Used for operating two or more jacks at the same time.
・Jack to be operated is unselectable.

Manifold combination table
Manifolds or
BranchHand pump

Manifolds(M）2 ports
3 ports
4 ports
Branch（B） 2 ports
3 ports
4 ports

0.3
－
－
－
○
－
－

0.7
○
○
○
○
○
○

0.9
○
○
○
○
○
○

1.3
○
○
○
○
○
○

TWA
2
2.3
○
○
○
○
○
○
○
○
○
○
○
○

4
○
○
○
○
○
○

6
○
○
○
○
○
○

6.5
○
○
○
○
○
○

10
○
○
○
○
○
○

0.7
○
○
○
－
－
－

0.9
○
○
○
－
－
－

TWAD
1.3 2.3
○
○
○
○
○
○
－
－
－
－
－
－

4
○
○
○
－
－
－

6
○
○
○
－
－
－

Accessory combination table
Jacks
Type

Single acting Type
（S・G・A）
Double acting type
（H）

Combination

Type of accessories
Quantity used

2pcs
3pcs
4pcs
2pcs
3pcs
4pcs

Handpump

TWA

TWAD

Manifolds (M)Buranch (B)2 ports
3 ports
4 ports
2 ports
3 ports
4 ports

2 ports
3 ports
4 ports－－－

Pressure guage & installing fittings
installing fittings in installing fillitng

1set

1set

Coupler

Pump base

2 pcs
3 pcs
4 pcs
4 pcs
6 pcs
8 pcs

－
○
○
○
○
○

59

O.J. Power® / Portable battery pumps 72Mpa

Portable Battery Pumps

0.6 B

31

R1 14

Battery pump
PBP: Oil type; PBPW: water type
Usable Oil

PBP-0.6, PBP-1.0 (for single-acting jacks)

0.6: 0.6 , 1.0: 1.0

Coupler No mark: No coupler, B: with B-6J,
C: with C-6J

Features

Battery pumps

PBP

Model number

Battery No mark: no battery, 3: 3Ah, 5: 5Ah

1: 1pc, 2: 2pc……
• Lightweight
Only 5.0kg including the battery, compared to our 6.6kg TWA-0.7
Rapid charger No mark: No charger, R1: 1pc
and 5.5kg LTWA-0.7 hand pumps.
Voltage(V) 14: 14.4V, 18: 18V• Compact design
There are no protrusions on the battery. The 14.4V battery and oil tank are protected by an aluminum cover.
Possibility of damage is largely decreased• No ventilation required
A rubber tank inside the aluminum cover eliminates the need for ventilation.
Consequently, there are no worries about dust entering the tank or oil leaking out.
• Use at every orientation:
Vertical, horizontal, or at any other orientation.
• Variable lever
The position of release valve lever is variable.
• Easy to carry
Portable
A removable shoulder strap is included.
• Low-noise design
Noise measurement: Load and no-load both approximately 70dB (A)Straighten• Optional pressure gauge
A 63mm diameter pressure gauge can be mounted with an adapter.

Lift up

Performance• Battery performance (full charge）
Approx.50 times of full stroke for E23S5

Battery(DC14.4V or 18V3Ah/5Ah)
HITACHI:BSL1430 ∙ BSL1830

Dimensional drawing

PBP-0.6

Set
72MPa
LP

Set
2MPa

M
HP

Close Cover

Lithium-ion
battery
DC 14.4V,
capacity 3.0Ah

Rubber tank
Aluminumtank case
Working oil
Approx. 245(Approx. 290)

※Drawing of PBP-0.6-31 (Option accessories included).
Unit in parentheses shows dimension for PBP-1.0

Specifications
Model
Unit

PBP‐0.6

PBP‐1.0

PBPW‐0.6

PBPW‐1.0

MAX72
MAX72
MAX72
MAX72
Working High pressure MPa
pressure Low pressure MPa2222High pressure L/min
0.06
0.06
0.06
0.06
DeliveryLow pressure L/min
0.7
0.7
0.7
0.7
Port thread
NPT3/8
NPT3/8
NPT3/8
NPT3/8
－
680
1050
680
1050
Fluid Total fluid volume mℓvolume Usable fluid volume mℓ
600
1000
600
1000
Working fluid
Tap water－ Machine oil ISO-VG10 Machine oil ISO-VG10 Tap water
Voltage
DC14.4・DC18 DC14.4・DC18 DC14.4・DC18 DC14.4・DC18
V
Mass Approx.
5
6.3
5
6.3
kg

60

Hook B

Battery carrier

100
Approx. 120

Items

Protective
cover

Open
Oil
supply port

Approx. 200(Approx. 220)148(166)
88(106)

Output port
NPT3/8Gauge Adapter

Push button switch
Push - ON
Release - OFF
Carrying handle
DC motor

Hook A

Releasevalve lever

Output port
(NPT 3/8)

Hydraulic circuit

Rapid charger
HITACHI:UC18YSL3Time table of battery charger
Capacity
Unit（Ah）

3.0
5.0

Standard
Charging voltage
Unit（min）
Unit（V）
approx. 22
approx. 35

AC:100Notes. ①There is no pressure switch
installed in this pump. To protect
equipment, please refrain fromcontinuous use with the safetyvalve pressure set at 72MPa.
②Use this product with care.
Although the battery is covered, it
is not waterproof.
③Use only 14.4V or 18V DC batteries.
④There will be a bit protrusion when
18V battery is mounted on PBP-0.6.

O.J. Power® / Air booster pumps 70MPa
Model number

AB type Air Booster Pumps

Air booster pump
Total oilfor single-acting jacks
Features• Can only be connected to air hoses.
• Output or release fuctions are activated simply by stepping on the pedal.

• The oil tank is made of sturdy plastic.
• Compact, lightweight, and convenient.

Hydraulic circuit diagram
Air

Air booster pumps

HydraulicDimensional drawing

Dimensional drawing

Approx.
Approx.

Approx.

Component of air hoses
Hose band
Air hose (3m)Foot pedal

NPT3/8Air supply
port

Hose band

Approx.

Approx.

Approx.

Approx.

Air valve
Quick coupler(Male)

Coupler( Union )Approx.

Note) (1) When pressing the “RELEASE” side of the pedal, the pressure releases rapidly.
There is a danger of the load falling rapidly if the “RELEASE” side of the pedal is pressed while a load is being supported.
(2) Do not loosen couplings, plugs, or hoses when the pump is pressurizing. Otherwise, falling loads, spraying oil, flying parts and other hazards may occur.
(3) Consult with us before placing the pump vertically or using the pump with a double-acting hydraulic jack.
(4) Be careful about using the pump in places where ambient temperature is over 50℃ or corrosive chemicals are present.
(5) Immediately after the pump is installed the circuit may contain air locks that prevent pressurization. Use your hands to press and hold the “RELEASE”
side of the pedal and the “PUMP” pushbutton (under the pedal) for about 15 seconds.

Working pressure andOperating air pressure

Specifications
Items Max. rated flow Max. Working pressure

Output flow

Usable oil capacity Weight approx.
Air pressure

Model

Hydraulic pressure

Performance

Air consumption

Min. air pressure

Air consumption

Air
pressure

Output flow

Hydraulic pressure

Performance

Hydraulic pressure

Working pressure

61

O.J. Power® / PSP seriesPSP

Model number

PSP type low-noise compact electric hydraulic pump

1.6 J GS T 2.2

PSP type
Usable oil volume

for single-acting jack

J: Release valve
E: Solenoid valve for single acting
R: Return valve

Application

G: With pressure gauge• High pressure hydraulic pump with max. discharge pressure of 72 MPa with extreme low noise. S: With pressure switch
GS: With pressure gauge, pressure switch• Slim body with enlarged grip part greatly improves portability.
• Selectable oil reservoirs of 1.6L and 2.7L make it possible to operate with bigger jack.
No mark: Aluminum reservoir
T: Resin reservoir
The selectable resin made reservoir (for 1.6L only) provides even better portability.
• Excellent driving source for hydraulic punch, cutter, bender, shop press and other work tools. 2.2: Single phase 220V
2.3: Single phase 230V
• For lifting/lowering heavy load application, please use PSP-J type.
Please do not use PSP-E/PSP-R for lifting/lowering heavy load application for falling loads is dangerous.
• Please avoid continuous operation. For continuous application, please use QH type hydraulic pump instead.

Electric pumps

How to operate

How to operate

How to operate• Press the ‘A’button to start
the motor andpressurize thejack.
• When you releasethe ‘A’ button, themotor will stop.
The jack willremain pressurized.
• Press the ‘B’button to retract
the jack.

• Press the “A”
button to start
the motor andpressurize thejack.
• When “A” button
is released, themotor will stopand jack will be
returned byreturn valve.

• Close the releasevalve, then pressthe ‘A’ button tostart the motorand deliver the oil.
• When you releasethe ‘A’ button, themotor will stop.
The jack willremain pressurized and maintainits position.
• Open the releasePSP-1.6JGS
valve to allow the(Release valve) jack to return.

PSP-1.6EGS(Solenoid valve)

Hydraulic circuit diagram

Hydraulic circuit diagram

Advance Port

PSP-1.6RGS(Return valve)
Hydraulic circuit diagram
Advance Port

Advance Port

NPT3/8

NPT3/8

NPT3/8

SOL

5
8
72MPa

72MPa
77MPa

2.5MPa4

1.5MPaM

AB

Electric circuit diagram

6

4

M

LP HP

6

Electric circuit diagram

Electric circuit diagram
CR1

CR1 CR2

CR1 PS

M

M

PS

ＳＯＬ

5

5
1

伸

1

Parts list
1 Hand Switch
2 Substrate
3 Release Valve
4 Motor
5 Pressure Gauge
5-1 Bushing
6 Automatic Ventilation Valve

6
Approx. 364

15
16
6
9

101.5(127)
113(143)
１27(156)

10

Mounting
Hole

Mounting
Hole

227(293)240(309)

Specifications
Items Working pressure（MPa）
Model

PSP‐1.6JGS
PSP-1.6EGS
PSP-1.6RGS
PSP‐2.7JGS
PSP-2.7EGS
PSP-2.7RGS

High

Low

Oil delivery（ℓ/min）
High

2.5
72

1.5
2.5
1.5

Low

0.2

2
2.2
2

Oil（ℓ）

Motor
Capa（kw）Voltage（V）

UsableRequiredSingle ph.
220V
or
230V

1.6

2

2.7

3

2.2

Notes.① Figures of oil delivery at 50/60Hz are same.
④ The tip of power cord is without plug.

62※No.3 E: Poppet Valve
R: Return Valve

Dimensions in the parentheses
are for 2.7L tank type254(322)

Parts name

No.

2

11

M
CR2

CR2

4

3

4

M

CR1

Dimensional drawing

NPT3／8

LP HP

AB

AB

CR1

5

13

77MPa

13

6

CR1 PS

72MPa

32.5MPa
LP HP

8

3

8

13

77MPa

5

5

3

0.35

② Working oil: ISO-L-HV-VG32 or equivalent.

Q’ty No.

1
1
1
1
1
1
1

Parts nameQ’ty

8 Pressure Switch
9 Plate
10 Adapter Plate
11 Oil Tank
14 Cover15 Valve Block
16 Port Block

1
1
1
1
1
1
1

※No.16 For J, R type only

Weight approx.（kg） Connection
port
Resin

Aluminum

15.3
15.3
14.3
17.5
17.5
16.5

14.5
14.5
13.5

③ Resin tank is for 1.6ℓ model only.

―――

NPT3/8orRc3/8

O.J. Power® / PSP series
Model number

PSP type low-noise compact electric hydraulic pumpPSP

1.6 D GS T 2.2

PSP type
Usable oil volume

for double-acting jacks

D: Manual valve
K: Solenoid valve

Application

G: With pressure gauge
S: With pressure switch• High pressure hydraulic pump with max. discharge pressure of 72 MPa with extreme low noise. GS: With pressure gauge, pressure switch• Slim body with enlarged grip part greatly improves portability.
No mark: Aluminum reservoir• Selectable oil reservoirs of 1.6L and 2.7L enable working with bigger jack.
T: Resin reservoir
The selectable resin made reservoir (for 1.6L only) provides even better portability.
2.2: Single phase 220V
• Excellent driving source for work tools i.e. shop press etc.
2.3: Single phase 230V
• For lifting/lowering heavy load application, please use PSP-J type.
Please do not use PSP-D/PSP-K for lifting/lowering heavy load application for falling loads is dangerous.
• Please avoid continuous operation. For continuous application, please use QH type hydraulic pump instead.

How to operate• Select either “Advance” or“Return” on the D type switchingvalve. Press “ON” button on thependant switch to start motor.
Oil will be delivered from theselected port.

• Select port first and then press the“ON” button on the pendant switch
to start motor and deliver the oil.
Press “A” button to advance jackand “B” to return jack.

PSP-1.6DGS(Manual valve)PSP-1.6KGS(Solenoid valve)

Hydraulic circuit diagram
Advance Port
NPT3/8

Electric circuit diagram

Return Port

Hydraulic circuit diagram

NPT3/8Advance Port

Return Port

SOL A

5

SOL B

A

3

ＣＲ１ ＰＳ

72MPa
2.5MPa

72MPa
77MPa

2.5MPa

6

M

6

LP HP

Parts list
Parts name

No.
14
5

4

5
1

2

伸

1 Hand Switch
2 Substrate
3 Solenoid Valve
4 Motor
5 Pressure Gauge
5-1 Bushing
6 Automatic Ventilation Valve

1

縮

3
15
ＳＯＬ Ｂ

16
6

8

4

M

M

CR1 SOL A
CR2 SOL B

AB

Dimensional drawing

ＳＯＬ Ａ

CR1 PS
CR2

13

4
LP HP
AB

CR2

3

8

M

13

77MPa

CR1

B

5

8

Approx. 364

Electric circuit diagram

NPT3/8

NPT3/8

CR1

Electric pumps

How to operate

9

10

11

Q’ty No.

1
1
1
1
1
1
1

Parts nameQ’ty

8 Pressure Switch
9 Plate
10 Adapter Plate
11 Oil Tank
14 Cover15 Valve Block
16 Port Block

1
1
1
1
1
1
1

※No.3 D: Manual valve

NPT3／8101.5(129)
113(143)
127(156)

227(293)

Mounting Hole240(309)254(322)

Mounting
Hole

Dimensions in the parentheses
are for 2.7L tank typeSpecifications
Items Working pressure（MPa）
Model

PSP‐1.6DGS
PSP-1.6KGS
PSP‐2.7DGS
PSP-2.7KGS

High

72

Low

1

Oil delivery（ℓ/min）
High

0.2

Notes.① Figures of oil delivery at 50/60Hz are same.
④ The tip of power cord is without plug.

Low

2.2

Oil（ℓ）

Motor
Capa（kw）Voltage（V）

0.35

Single ph.
220V
or
230V

UsableRequired

1.6

2

2.7

3

② Working oil: ISO-L-HV-VG32 or equivalent.

Weight approx.（kg） Connection
port
Resin

Aluminum

15.3
17.3
17.5
19.0

14.5
16.5

―
―

NPT3/8or
Rc3/8③ Resin tank is for 1.6ℓ model only.

63

O.J. Power® / AI-ZER® Electric pumps 72MPa

QH-type Electric Pumps

Model number

QH

J

A 3.8

QH typeHorsepower

for single-acting jacks

J : Release valve
G: Manual control valve

Features

A: With step-down transformer
B: Without step-down transformer• Even more compact design and light-weight compared to previous GH type pump.
• Extreme low noise during low pressure discharging.
• Pressure gauge (PGO-63X1000) is equipped as a standard accessory for all models.

Voltage

Dimensional drawing
with step-down transformer
SHEATHED POTABLE
POWER
CABLES
2

A–A VIEW

2mm 4C 3m

QH1/2－GHow to operate

How to operate• Close release valve. Press the ‘A’ button tostart the motor and pressurize the jack.
• When you release the ‘A’ button, the motor
will stop. The jack will remain pressurized.
• Open the release valve to allow the jack toreturn.

• Turn on rocker switch to start motor.
• Manual control valve operation:
ADVANCE starts pump.
NEUTRAL stops pump.
RETRACT returns jack.
• Model QH1/2-G is NOT designed for raisingand lowering heavy loads. We recommend
QH1/2-J for this type of application.

Notes:① Motor and hydraulic circuit are determined
after consultation.
② Circuit operation requires a separate
power source unless a step-downtransformer is installed.

6310

APPROX. 490

QH1/2－J

330

Electric pumps

14

CABLE
3m

15

CLOSE

OPEN

4— 9

210
240
APPROX. 385

Notes:① Motor and hydraulic circuit are determined
after consultation.
② Circuit operation requires a separate powersource unless a step-down transformer isinstalled.

1
4
5
3

Hydraulic circuit diagram

8

ADVANCE
Rc3/8

ADVANCE
Rc3/8

10

3
5

9

4

11

1

7

15

13

E
R
S
T

AC 220V
50Hz

S1
R1

MC

A

OL

PS

Electric circuit diagram
AC 380V
50/60HzM

OL

AC 220V
50Hz

MCElectric circuit diagram with step-down transformer
AC 380V
50/60Hz

E
R
S
T
Tr
CP

MC

OL

U
V
W

AC 380V
50/60Hz

M

E
R
S
T

S1
ON
R1

E
R
S
T
Tr
CP

PS

OL

MC

OL

QH1/2－J

Parts name
1 Electric box

P OL
L

MC

MC

MC

2

OL

Valve
J: Release
G: manual
4 Electric motor

M

OL

MC

ON/OFF switch(Only QH1/2-G)

3

AC380V/100V
ON OFF PS

Operational switch
A: AdvanceParts list

M

Electric circuit diagram with step-down transformer

AC380V/100V
A

13

DRAIN
Rc3/8

Electric circuit diagram
AC 380V
50/60Hz7

ADVANCE
Rc3/8

2.3

6

12

11

12 SET 77MPa

180

8 SET 72MPa
SET 5MPa

APPROX. 440

Hydraulic circuit diagram

Q’ty

Q’ty
Parts name
8 Pressure switch 1

11
1

9 Plate1

10 Carrying handle 2
11 Oil tank

1

12 Safety valve

1

1

13 Hydraulic pump 1

5 Pressure gauge

1

14 Oil supply plug

1

6 Air breather

1

15 Hand switch

1

7 Oil level gauge

1

Options• Step-down transformer

Specifications
Motor

Items Working pressure

Oil delivery

High

High

Low

0.35
0.29

2.4
2.0

Model

QH1/2ーJ
QH1/2ーG

Low

Capa

Insu

Oil
Pole

Rpm

Voltage Usable Required

1800 3 ph.
1500 380V

Weight approx.
3 ph.

43
44

Notes.① Figures of delivery and r.p.m. of motor showing at 50Hz in right side, at 60Hz in left side. ② working oil: ISO-L-HV-VG32 or equivalent.
③ Motor is 120% load at 60Hz. ※ Specifications and size may subject to change without notice.

64

Connection
portO.J. Power® / AI-ZER® Electric pumps 72MPa
Model number

QH-type Electric Pumps

QH

E

A 3.8

QH typeHorsepower

for single-acting jacks

E: Solenoid valve, halfway stop, pressure retention
F: Solenoid valve, no halfway stop, no pressure retention

Features

A: With step-down transformer
B: Without step-down transformer• Even more compact design and light-weight compared to previous GH type pump.
• Extreme low noise during low pressure discharging.
• Pressure gauge (PGO-63X1000) is equipped as a standard accessory for all models.

Voltage

Dimensional drawing
with step-down transformer
SHEATHED POTABLE
POWER
CABLES
2

A–A VIEW

2mm 4C 3m

14

15

CLOSE
210
240

APPROX. 385

1
4
5
3
8

Hydraulic circuit diagram

ADVANCE
Rc3/8

OPEN

4— 9

Notes:① Motor and hydraulic circuit are determined
after consultation.
② Circuit operation requires a separate powersource unless a step-down transformer isinstalled.

Hydraulic circuit diagram

CABLE
3m

10

ADVANCE
Rc3/8

APPROX. 440

Notes:① Motor and hydraulic circuit are determined after
consultation.
② Circuit operation requires a separate power source
unless a step-down transformer is installed.

6310• Press the ‘A’ button to start the motor anddeliver the oil.
• When you release the ‘A’ button, the motor
will stop and the jack will return.
Midway stop and pressure hold are notapplicable for QH1/2-F.
• Models QH1/2-E and QH1/2-F are NOT
designed for raising and lowering heavyloads. We recommend QH1/2-J for thisapplication.

APPROX. 490• Press the ‘A’ button to start the motor and deliver
the oil.
• When you release the ‘A’ button, the motor will stop.
The jack will remain pressurized and stay in its
current position. Press “B” button to return jack.
• Open the release valve to allow the jack to return.
• Models QH1/2-E and QH1/2-F are NOT designed for
raising and lowering heavy loads. We recommend
QH1/2-J for this application.

330

QH1/2－F（Solenoid valve）

How to operate

9

12 SET 77MPa

6

4

11

1

7

AC 220V
50Hz

13

7

DRAIN
Rc3/8

13

E
R
S
T

MC

S1
R1

A

OL

PS

R

AC 380V
50/60Hz

M

OL
SOL

E
R
S
T
Tr
CP

MC

OL

AC 220V
50Hz

MC

U
V
W

M

E
R
S
T
S1
R1

R

OL
SOL

A

Parts list

OL

PS

M

OL
SOL

AC 380V
50/60Hz

E
R
S
T
Tr
CP

PS

MC

Parts name

MCElectric circuit diagram with step-down transformer

AC380V/100VA

Operational switch
A: Advance
QH1/2-E
R: Retract
QH1/2-F A: AdvanceElectric circuit diagram

Electric circuit diagram with step-down transformer
AC 380V
50/60HzADVANCE
Rc3/8

15

Electric circuit diagram
AC 380V
50/60Hz12

2.3

SET 5MPa

11

MC

MC

OL

U
V
W

Q’ty

Q’ty

1 Electric box

1

Parts name
9 Plate3 Poppet valve

1

10 Carrying handle 2

4 Electric motor

1

11 Oil tank1

5 Pressure gauge

1

12 Safety valve

1

6 Air breather

1

13 Hydraulic pump 1

7 Oil level gauge

1

14 Oil supply plug

1

15 Hand switch

1

8 Pressure switch 1

M

180

3
5
8 SET 72MPa

Electric pumps

QH1/2－E（Solenoid valve）

How to operate

1

AC380V/100V
A

PS

OL
SOL

Options
MC• Step-down transformer

Specifications
Motor

Items Working pressure

Oil delivery

High

High

Low

0.35
0.29

2.4
2.0

Model

QH1/2ーE
QH1/2ーF

Low

Capa

Insu

Oil
Pole

Rpm

Voltage Usable Required

1800 3 ph.
1500 380V

Weight approx.
3 ph.

Connection
port

43

Notes.① Figures of delivery and r.p.m. of motor showing at 50Hz in right side, at 60Hz in left side. ② working oil: ISO-L-HV-VG32 or equivalent.
③ Motor is 120% load at 60Hz. ※ Specifications and size may subject to change without notice.

65

O.J. Power® / AI-ZER® Electric pumps 72MPa
Model number

QH-type Electric Pumps

D

QH

A 3.8

QH typeHorsepowerfor double-acting jacks

O : With manifold & pressure switch(In case of separate control valve)
D : With manual control valve & pressure switch
K : With solenoid valve (KSV) & pressure switch(For high-frequency use)
W: With solenoid valve (Poppet valve) &pressure switch (For extended use)

Features• Even more compact design and light-weight compared to previous GH type pump.
• Extreme low noise during low pressure discharging.
• Pressure gauge (PGO-63X1000) is equipped as a standard accessory for all models.

A: With step-down transformer
B: Without step-down transformer
Voltage

Dimensional drawing
with step-down transformer
SHEATHED POTABLE
POWER
CABLES22mm 4C 3m

QH1/2－D

QH1/2－K

6
310

APPROX. 490

14

330

Electric pumps

A–A VIEW

Notes: ① Motor and hydraulic circuit are determined after consultation.
② Circuit operation requires a separate power source unless a step-down transformer is installed.

Hydraulic circuit diagram
ADVANCE
Rc3/8

O• A separate, directional
control valve is required.

RETRACT
Rc3/8
3
5

4— 9

210
240
APPROX. 385

8 SET 72MPa

1

12 SET 77MPa

SET 5MPa
6

4

11

1 2

7

2

4

• Directional control valve isoperated by a hand lever.

5
3

13

8

W

Electric circuit diagram
AC 380V
50/60HzE
R
S
T

AC 220V
50/60HzS1
R1

MCAC 380V
50/60Hz

OL

PS

OL

E
R
S
T
Tr

MC

OL

PS

OL

L

180

Q’ty
Parts name Q’ty
Parts name
1 7 Oil level gauge 1
1 Electric box
2 ON/OFF switch 1 8 Pressure switch 1
Valve
1
9 PlateO: Port block
10 Carrying handle 2
D: Manual control
3 K: Solenoid valve (KSV) 1
1
11 Oil tank
W: Solenoid valve
1
12 Safety valve(Poppet valve)
1 13 Hydraulic pump 1
4 Electric motor

AC380V/100V

OFF

13

Parts list

M

ON

7

DRAIN
Rc3/8

CP

MC

12

ADVANCE
Rc3/8
RETRACT
Rc3/8

Electric circuit diagram with step-down transformer
M

ON

9
11

2.3

• Directional control valve is anelectromagnetically switched type.
Electrical signals control theswitching. Excitation time is within 1
minute. Useful for high-frequency
applications.
• Directional control valve is anelectromagnetically switched type.
Electrical signals control theswitching. Excitation time is 30
minutes. Useful for applications witha frequency of 15 times/min or less.

APPROX. 440

10MC

5 Pressure gauge

1

6 Air breather

1

14 Oil supply plug1

Options• Step-down transformer

Specifications
Motor

Items Working pressure

Oil delivery

High

High

Low

0.35
0.29

2.4
2.0

Model

QH1/2ーO
QH1/2ーD
QH1/2ーK
QH1/2ーW

Low

Capa

Insu

Oil
Pole

Rpm

Weight approx.

Voltage Usable Required

1800 3 ph.
1500 380V

Notes.① Figures of delivery and r.p.m. of motor showing at 50Hz in right side, at 60Hz in left side. ② Voltage available on request③ Motor is 120% load at 60Hz. ※ Specifications and size may subject to change without notice.

66

3 ph.

40
43
45
54

Connection
portO.J. Power® / AI-ZER® Electric pumps 72MPa

QH-type Electric Pumps

QH

Model number

1

J

A 3.8

G typeHorsepower

for single-acting jacks

J : Release valve
G: Manual control valve

Features

A: With step-down transformer
B: Without step-down transformer• Even more compact design and light-weight compared to previous GH type pump.
• Extreme low noise during low pressure discharging.
• Pressure gauge (PGO-63X1000) is equipped as a standard accessory for all models.
• IE3 motor is equipped as standard a part which contributes to energy saving.

Voltage

Dimensional drawing
with step-down transformer
SHEATHED POTABLE
POWER
CABLES
2

A-A VIEW

2mm 4C 3m

QH1－G

How to operate

How to operate• Close release valve. Press the ‘A’ button tostart the motor and deliver the oil.
• When you release the ‘A’ button, the motor
will stop. The jack will remain pressurized
and stay in its current position.
• Open the release valve to allow the jack toreturn.

• Turn on rocker switch to start motor.
• Manual control valve operation:
ADVANCE starts pump.
NEUTRAL stops pump.
RETRACT allows jack to return.
• Model QH1-G is NOT designed for raisingand lowering heavy loads. We recommend
QH1-J for this type of application.

4— 9Notes:① Motor and hydraulic circuit are determined
after consultation.
② Circuit operation requires a separate powersource unless a step-down transformer isinstalled.

Hydraulic circuit diagramA

4
5

Hydraulic circuit diagram

3
8
10

3
5

SET 7MPa

98 SET 72MPa
12 SET 77MPa

11

12

ADVANCE
Rc3/8

13

7

4

11

1

M

LP HP

7

15

13

DRAIN
Rc3/8

Electric circuit diagram
AC 380V
50/60HzAC 220V
50Hz

E
R
S
T
S1
R1

MC

A

OL

PS

Electric circuit diagram
AC 380V
50/60HzM

OL

AC 220V
50Hz

MCElectric circuit diagram with step-down transformer
AC 380V
50/60Hz

E
R
S
T
Tr

MC OL

U
V
W

E
R
S
T
S1
R1

AC 380V
50/60Hz

M

E
R
S
T
Tr
CP

CP
PS

OL

MC

Parts listOL

M

ON PS OL
L

Parts name
1 Electric box
2

MC

MC

MC

OL

M

AC380V/100V
ON OFF PS

OL

MCON/OFF switch(Only QH1-G)

Q’ty

Q’ty
Parts name
8 Pressure switch 1

1
1

9 Plate1

10 Carrying handle 2

Valve
J: Release valve
1
G: Manual control valve
4 Electric motor
1

11 Oil tank

1

12 Safety valve

1

5 Pressure gauge

1

14 Oil supply plug

1

6 Air breather

1

15 Hand switch

1

7 Oil level gauge

13Electric circuit diagram with step-down transformer

AC380V/100V
A

2.3

6

A
1

ADVANCE
Rc3/8

ADVANCE
Rc3/8

OPEN
220
250
APPROX. 395

CLOSE

275

① Motor and hydraulic circuit are determined after
consultation.
② Circuit operation requires a separate powersource unless a step-down transformer isinstalled.

6
15

APPROX. 535

Notes:

CABLE
3m

Electric pumps

QH1－J

APPROX. 550
390
370

14

13 Hydraulic pump 1

Options• Step-down transformer

Specifications
Model

QH1ーJ
QH1ーG

Motor

Items Working pressure

Oil delivery

High

High

Low

0.6
0.5

4

Low

3.3

Capa

Insu

Oil
Pole

Rpm

Voltage Usable Required

1800 3 ph.
1500 380V

Weightapprox.

Connection
port

61
61

Notes.① Figures of delivery and r.p.m. of motor showing at 50Hz in right side, at 60Hz in left side. ② Voltage available on request③ Motor is 120% load at 60Hz. ※ Specifications and size may subject to change without notice.

67

O.J. Power® / AI-ZER® Electric pumps 72MPa

QH-type Electric Pumps

QH

Model number

1

E

A 3.8

QH typeHorsepower

for single-acting jacks

E: Solenoid valve, halfway stop, pressure retention
F: Solenoid valve, no halfway stop, no pressure retention

Features

A: With step-down transformer
B: Without step-down transformer• Even more compact design and light-weight compared to previous GH type pump.
• Extreme low noise during low pressure discharging.
• Pressure gauge (PGO-63X1000) is equipped as a standard accessory for all models.
• IE3 motor is equipped as standard a part which contributes to energy saving.

Voltage

Dimensional drawing
with step-down transformer
A-A VIEWSHEATHED POTABLE
POWER
CABLES22mm 4C 3m

QH1－F

How to operate

How to operate• Press the ‘A’ button to start the motor and deliver
the oil.
• When you release the ‘A’ button, the motor will stop.
The jack will remain pressurized and stay in its
current position. Press “B” button to return jack.
• Open the release valve to allow the jack to return.
• Models QH1-E and QH1-F are NOT designed for
raising and lowering heavy loads. We recommend
QH1-J for this application.

• Press the ‘A’ button to start the motor anddeliver the oil.
• When you release the ‘A’ button, the motor
will stop and the jack will return.
Midway stop and pressure hold are notapplicable for QH1-F.
• Models QH1-E and QH1-F are NOT
designed for raising and lowering heavyloads. We recommend QH1-J for thisapplication.

4— 9Notes:① Motor and hydraulic circuit are determined
after consultation.
② Circuit operation requires a separate powersource unless a step-down transformer isinstalled.

Hydraulic circuit diagram

CLOSE

OPEN

220
250
APPROX. 395
1

4
5
3
8
10

Hydraulic circuit diagram
ADVANCE
Rc3/8

ADVANCE
Rc3/8

6
15

9

3

11

12

ADVANCE
Rc3/8

13

7

5
8 SET 72MPa
12 SET 77MPa

6

4

11

1

7

13

DRAIN
Rc3/8

15

Electric circuit diagram
AC 380V
50/60HzE
R
S
T

AC 220V
50Hz

S1
R1

MC

OL

A

M

PS

R

OL
SOL

MC

Electric circuit diagram with step-down transformer
E
R
S
T
Tr
CP

MC OL

U
V
W

AC 380V
50/60HzAC 220V
50Hz

S1
R1

AC 380V
50/60Hz

M

R

OL
SOL

OL

A

Parts list

M

PS

OL
SOL

E
R
S
T
Tr
CP

PS

MC

MC

Electric circuit diagram with step-down transformer

AC380V/100VA

Operational switch
A: Advance
QH1-E
R: Retract
QH1-F A: AdvanceElectric circuit diagram
E
R
S
T

MC

MC OL

U
V
W

PS

OL
SOL

Parts name
1 Electric box

Q’ty
1

Parts name
9 Plate3 Poppet valve

1

10 Carrying handle 2

4 Electric motor

1

11 Oil tank1

5 Pressure gauge

1

12 Safety valve

1

6 Air breather

1

13 Hydraulic pump 1

7 Oil level gauge

1

14 Oil supply plug

1

15 Hand switch

1

8 Pressure switch 1

M

AC380V/100VA

2.3

SET 7MPa

AC 380V
50/60Hz

APPROX. 535

Notes:① Motor and hydraulic circuit are determined after
consultation.
② Circuit operation requires a separate power source
unless a step-down transformer is installed.

CABLE
3m

275

QH1－E

APPROX. 550
390370

Electric pumps

14

Q’ty
1

Options• Step-down transformer

MC

Specifications
Model

QH1ーE
QH1ーF

Motor

Items Working pressure

Oil delivery

High

High

Low

0.6
0.5

4
3.3

Low

Capa

Insu

Oil
Pole

Rpm

Voltage Usable Required

1800 3 ph.
1500 380V

Weightapprox.

62
62

Notes.① Figures of delivery and r.p.m. of motor showing at 50Hz in right side, at 60Hz in left side. ② woking oil: ISO-L-HV-VG32 or equivalent.
③ Motor is 120% load at 60Hz. ※ Specifications and size may subject to change without notice.

68

Connection
portO.J. Power® / AI-ZER® Electric pumps 72MPa

QH

Model number

QH-type Electric Pumps

1

D

A 3.8

QH typeHorsepowerfor double-acting jacks

O : With port block & pressure switch(In case of separate control valve)
D : With manual control valve & pressure switch
K : With solenoid valve (KSV) & pressure switch(For high-frequency use)
W: With solenoid valve (Poppet valve) &pressure switch (For extended use)

Features• Even more compact design and light-weight compared to previous GH type pump.
• Extreme low noise during low pressure discharging.
• Pressure gauge (PGO-63X1000) is equipped as a standard accessory for all models.
• IE3 motor is equipped as standard a part which contributes to energy saving.

A: With step-down transformer
B: Without step-down transformer
Voltage

Dimensional drawing
with step-down transformer
A-A VIEWSHEATHED POTABLE
POWER
CABLES22mm 4C 3m

Electric pumps

QH1－D

APPROX. 550
390
370

14

QH1－K

6

Notes: ① Motor and hydraulic circuit are determined after consultation.
② Circuit operation requires a separate power source unless a step-down transformer is installed.

Hydraulic circuit diagramO

RETRACT
Rc3/8
3
5

11

1 2

7

4
5
3

13

8

• Directional control valve is anelectricomagnetically switched type.
Electrical signals control theswitching. Excitation time is within 1
minute. Useful for high-frequency
applications.
• Directional control valve is anelectricomagnetically switched type.
Electrical signals control theswitching. Excitation time is 30
minutes. Useful for applications witha frequency of 30 times/min or less.
※After 30 minutes of continuos
energization, set a break time of 30
minutes is recommended.

W

Electric circuit diagram
AC 380V
50/60HzE
R
S
T

AC 220V
50Hz

S1
R1

MC

AC 380V
50/60Hz

OL

PS

OL

10
9

E
R
S
T
Tr
CP

MC
L

MC

OL

MC

ADVANCE
Rc3/8
RETRACT
Rc3/8

13

Parts list
Parts name
1 Electric box

Q’ty

Parts name7 Oil level gauge

1

2 ON/OFF switch 1
Valve
O: Port block
D: Manual control
3 K: Solenoid valve (KSV) 1
W: Solenoid valve(Poppet valve)
1
4 Electric motor

AC380V/100V

OL

12

DRAIN
Rc3/8

M

ON OFF PS

11

7

Electric circuit diagram with step-down transformer
M

ON

2

APPROX. 535

41• Directional control valve isoperated by a hand lever.

275

6

220
250
APPROX. 395

8 SET 72MPa
12 SET 77MPa

SET 7MPa

4— 9• A separate, directional
control valve is required.

2.3

ADVANCE
Rc3/8

5 Pressure gauge

1

6 Air breather

1

Q’ty
1

8 Pressure switch 1
9 Plate1

10 Carrying handle 2
11 Oil tank

1

12 Safety valve

1

13 Hydraulic pump 1
14 Oil supply plug1

Options• Step-down transformer

Specifications
Model

QH1ーO
QH1ーD
QH1ーK
QH1ーW

Items Working pressure

Oil delivery

High

High

Low

0.6
0.5

4
3.3

Low

Oil

Motor
Capa

Insu

Pole

Rpm

Voltage Usable Required

1800 3 ph.
1500 380V

Weightapprox.

Connection
port

59
62
65
70

Notes.① Figures of delivery and r.p.m. of motor showing at 50Hz in right side, at 60Hz in left side. ② working oil: ISO-L-HV-VG32 or equivalent.
③ Motor is 120% load at 60Hz. ※ Specifications and size may subject to change without notice.

69

O.J. Power® / AI-ZER® Electric pumps 72MPa

QH

Model number

QH-type Electric Pumps

2

D

A 3.8

QH typeHorsepower

for single- or double-acting jacks

O : With port block & pressure switch(In case of separate control valve)
D : With manual control valve & pressure switch
G : With manual control valve & pressure switch(For single-acting jacks)
K : With solenoid valve (KSV) & pressure switch(For high-frequency use)
W: With solenoid valve (Poppet valve) &pressure switch (For extended use)

Features• Even more compact design and light-weight compared to previous GH type pump.
• Extreme low noise during low pressure discharging.
• Pressure gauge (PGO-63X1000) is equipped as a standard accessory for all models.
• IE3 motor is equipped as standard a part which contributes to energy saving.

A: With step-down transformer
B: Without step-down transformer
Voltage

Dimensional drawing
with step-down transformer
A-A VIEWSHEATHED POTABLE
POWER
CABLES22mm 4C 3m

QH2－K

Notes: ① Motor and hydraulic circuit are determined after consultation.
② Circuit operation requires a separate power source unless a step-down transformer is installed.
ADVANCE
Rc3/8

O

2— 9

3
5

D

8 SET 72MPa
12 SET 77MPa

SET 7MPa
6

4

11

1 2

7

• Directional control valve ismanually operated by a handlever. For double-acting
jacks.

G

13

6
TANK PORT
Rc3/8• A separate directional-control valve is required.

RETRACT
Rc3/8

270
300
APPROX. 470

4

1

5

2

3

• Directional control valve ismanually operated by a handlever. For single-acting jacks.

8
10

APPROX. 630

Hydraulic circuit diagram

420

QH2－D

440

Electric pumps

14

9

W

• Directional control valve is an electricomagnetically switched type. Electrical signals control theswitching. Excitation time is 30 minutes. Usefulfor applications with a frequency of 30 times/min
or less.
※After 30 minutes of continuos energization, seta break time of 30 minutes is recommended.

Electric circuit diagram
AC 380V
50/60HzAC 220V
50Hz

E
R
S
T

MC OL

R1
S1

PS

E
U
V
W

AC 380V
50/60Hz

E
R
S
T

MC OL

U
V
W

Parts list
Parts nameM

TR AC380V/100V

OL

MC

CP

L

ON OFF PS

OL

7
13

DRAIN
Rc3/8

Electric circuit diagram with step-down transformer
M

12

ADVANCE
Rc3/8
RETRACT
Rc3/8

325• Directional control valve is an electricomagnetically switched type. Electrical signals control theswitching. Excitation time is within 1 minute.
Useful for high-frequency applications.

2.3

K

11

Parts nameQ’ty

1 Magnet switch

6

Air breather

2 ON/OFF switch
Valve
O: Port block
D: Manual control
G: Manual control
3
K: Solenoid valve (KSV)
W: Solenoid valve(Poppet valve)

7

Oil level gauge

8

Pressure switch

9

Plate

Q’ty

10 Eye bolt
11 Oil tank
12 Safety valve

4 Electric motor

13 Hydraulic pump

5 Pressure gauge

14 Oil supply plug

Options

MC• Step-down transformer

Specifications
Model

QH2ーO
QH2ーD
QH2ーG
QH2ーK
QH2ーW
QH3ーO
QH3ーD
QH3ーK
QH3ーW

Motor

Items Working pressure

Oil delivery

High

High

Low

1.2
1.0

8
6.6

1.8
1.5

12
10

Low

Capa

Insu

Oil
Pole

Rpm

Voltage Usable Required

1800 3 ph.
1500 380V
2.2

20

30

20

30

Weightapprox.

87
90
90
100
105
105
107
120
123

Notes.① Figures of delivery and r.p.m. of motor showing at 50Hz in right side, at 60Hz in left side. ② working oil: ISO-L-HV-VG32 or equivalent.
③ Motor is 120% load at 60Hz. ※ Specifications and size may subject to change without notice.

70

Connection
portO.J. Power® / AI-ZER® Electric pumps 72MPa

QH

Model number

QH-type Electric Pumps

5

D

A 3.8

QH typeHorsepowerfor double-acting jacks

O : With port block & pressure switch(In case of separate control valve)
D : With manual control valve & pressure switch
K : With solenoid valve (KSV) & pressure switch(For high-frequency use)
W: With solenoid valve (Poppet valve) &pressure switch (For extended use)

Features• Even more compact design and light-weight compared to previous GH type pump.
• Extreme low noise during low pressure discharging.
• Pressure gauge (PGO-63X1000) is equipped as a standard accessory for all models.
• IE3 motor is equipped as standard a part which contributes to energy saving.

A: With step-down transformer
B: Without step-down transformer
Voltage

Dimensional drawing
with step-down transformer
SHEATHED POTABLE
POWER
CABLES2
3.5mm 4C 3m

470

QH5－K

Notes: ① Motor and hydraulic circuit are determined after consultation.
② Circuit operation requires a separate power source unless a step-down transformer is installed.

Hydraulic circuit diagramO

RETRACT
Rc3/8

D

1 2

7

Electric circuit diagram

AC 220V
50Hz

E
R
S
T

MC

R1
S1

OL

PS

3

• Directional control valve is anelectricomagnetically switched type.
Electrical signals control theswitching. Excitation time is within 1
minute. Useful for high-frequency
applications.
• Directional control valve is anelectricomagnetically switched type.
Electrical signals control theswitching. Excitation time is 30
minutes. Useful for applications witha frequency of 30 times/min or less.
※After 30 minutes of continuos
energization, set a break time of 30
minutes is recommended.

8
9
10

12
ADVANCE
Rc1/2

AC 380V
50/60Hz

E
R
S
T

MC OL

Tr
MC

CP

L

U
V
W

PS

OL

11

DRAIN
Rc3/8

Parts list
Q’ty
Parts name Q’ty
Parts name
1 7 Oil level gauge 1
1 Electric box
2 ON/OFF switch 1 8 Pressure switch 1
Valve
1
9 PlateO: Port block
4
Eye
bolt
10
D: Manual control
3 K: Solenoid valve (KSV) 1
1
11 Oil tank
W: Solenoid valve
1
12 Safety valve(Poppet valve)M

AC380V/100V
ON OFF

7
13

RETRACT
Rc1/2

Electric circuit diagram with step-down transformer
M

OL

2

5

W

E
U
V
W

1

4

13
K

AC 380V
50/60Hz450

APPROX. 700

11

TANK PORT
Rc3/8

APPROX. 540• Directional control valve ismanually operated by ahand lever.

4

6

420

326.5

SET 7MPa

4— 14• A separate directional-control valve isrequired.

3
5
8 SET 72MPa
12 SET 77MPa

6

3.2

ADVANCE
Rc3/8

Electric pumps

QH5－D

500

14

MC

4 Electric motor

1

13 Hydraulic pump 1

5 Pressure gauge

1

14 Oil supply plug

6 Air breather

1

1

Options• Step-down transformer

Specifications
Model

QH5ーO
QH5ーD
QH5ーK
QH5ーW

Motor

Items Working pressure

Oil delivery

High

High

Low

3.0
2.5

20
16.6

Low

Capa

3.7

Insu

Oil
Pole

Rpm

Voltage Usable Required

1800 3 ph.
1500 380V

35

50

Weightapprox.

146
150
163
184

Connection
port

1/2

Notes.① Figures of delivery and r.p.m. of motor showing at 50Hz right side, at 60Hz in left side. ② working oil: ISO-L-HV-VG32 or equipment.
③ Motor is 120% load at 60Hz. ※ Specifications and size may subject to change without notice.

71

O.J. Power® / AI-ZER® Electric pumps 72MPa

AH

Model number

AH-type Electric Pumps

7.5 KS A 3.8

AH typeHorsepowerfor double-acting jacks

SS: With port block & pressure switch (in case of separate control valve)
SR: With port block & relief valve (in case of separate control valve)
DS: With manual control valve & pressure switch
DR: With manual control valve & relief valve
KS: With solenoid valve (KSV) & pressure switch (for high-frequency use)
KR: With solenoid valve (KSV) & relief valve (for high-frequency use)
LS: With solenoid valve (OSLV) & pressure switch (for extended use)
LR: With solenoid valve (OSLV) & relief valve (for extended us)
A: With step-down transformer
B: Without step-down transformer
Voltage

Dimensional drawing withstep-down transformer

ADVANCE RETRACT
Rc3/4
Rc3/4

22

SOLB

SOLA

SOLb

6
4

5
AH10

ADVANCE
Rc3/4
7

SOLB SOLa

SOLb

A separate directional-control valve is required.
• SS type: maximum pressure is controlled by a pressure switch.
• SR type: maximum pressure is controlled by a relief valve.

20

12

19

16

15

AI-ZERHYDRAULIC PUMP

11

SOLA

14

DRAIN
Rc1/2
POWER
CABLE
8mm・4C 3m(AC380V)

OSAKAJACKAPPROX.1140

3

2

Hydraulic circuit diagram
RETRACT
Rc3/4

8

APPROX.590

1

Notes: ① Motor and hydraulic circuit are determined after consultation.
② Circuit operation requires a separate power source unless a step-down transformer is installed.

19

Electric pumps

SOLa

850
4-φ18

890

Parts list
Parts name
AB

LP HP

M

Directional control valve is manually operated by a hand lever.
• DS type: Maximum pressure is controlled by a pressure switch.
• DR type: Maximum pressure is controlled by a relief valve.

Parts name

Q’ty

Magnet switch

Oil tank

ON/OFF switch

Valve block

Solenoid valve

Valve stand

Motor

Unload valve

Pressure gauge

Safety valve

Air vent plug
(Oil supply port)

Pilot check valve

Oil gauge

Solenoid valve

Pressure switch

Operation switch

Q’ty

Relief modular valve

Options• Step-down transformer

Electric circuit diagramE
AC380V R
50/60Hz S
T

Directional control valve is an electricomagnetically switched type.
Electrical signals control the switching.
• KR & LR types: Excitation time is within 1 minute. Useful for
AC220V R1
high-frequency applications.
50/60Hz S1Maximum pressure is controlled by a relief valve.
• KS & LS types: Excitation time is 30 minutes. Useful for applications
with a frequency of 30 times/min or less.
Maximum pressure is controlled by a pressure switch.
※After 30 minutes of continuos energization, set a
break time of 30 minutes is recommended.

MC

ON

OFF

OL

U
V
W

PS OL

MC

Electric circuit diagram with step-down transformer
M

E
AC380V R
50/60Hz S
T

MC

Tr
MC

SOLb
SOLB
SOLa
SOLA

CP
ADVANCEOL

U
V
W

AC 380V/100V
ON OFFMCRETRACT

CR1 CR2

PS OL
STOP

Items Working pressure

Oil delivery

High

High

Low

4.5
3.7

34
28

6

48
40

AH7.5－DS
AH7.5－KS
AH7.5－LS
AH10－DS
AH10－KS
AH10－LS

Low

5

Oil

Motor
Capa

Insu

Pole

rpm

Voltage

1800
1500

3 ph.
380V

Notes.① Figures of oil delivery and r.p.m. of motor showing at 50Hz right side, at 60Hz in left side.
③ Motor is 120% load at 60Hz.

72

UsableMCADVANCECR1
RETRACT
CR2

CR1
CR2

CR2 CR1

SOLb
SOLB ADVANCE
SOLa
SOLA RETRACT

WeightRequired approx.

Connection
port

Specifications
Model

M

② working oil: ISO-L-HM-VG32 or equipment.

O.J. Power® / AI-ZER® Electric pumps 72MPa

QH type Custom Build Pump
Features• You can easily build your custom pump with desired options and hydraulic circuit that best fit your application.
• Inquire with the coding below. We can also build pump other than the coding listed below upon request.

Motor Horse Power
Motor Voltages

Operation Switch

Valve Operation
Pressure Gauge

CouplerMagnetic Switch

Manifolds

Pressure Control

Hydraulic Circuit

Coding example:QH 1／2 T3‐K‐A1 B1 C1 D1 E13 F0 G0Motor Horse Power

1／2（0.4kW）
1（0.75kW）
QH

2（1.5kW）
3（2.2kW）
5（3.7kW）

Motor Voltages
Nomark 200V 60Hz

T3

380V 50/60Hz

T4

440V 50/60Hz

Pressure Gauge
Without Pressure
A0 GaugeA1

φ63×1000(Standard equipped)

A2

φ75×1000

B2
B3
B4Valve Operation
For single acting jacks with pressure
holding function
For single acting jacks with pressure
E with solenoid valve
holding function
For single acting jacks
F with solenoid valve
automatically return
For single acting jacks
G with manual valve―
For double acting jacks
D with manual valve―
For double acting jacks for high frequency
K with solenoid valve
application
For double acting jacks for extended
W with solenoid valve
excitation application

J with manual valve

G0

Pendant switch
with 3m cord.
Pendant switch
with 5m cord.
Foot switch with
3m cord.
Foot switch with
5m cord.

※1 Standard cord length for J, E, F
type is 3m.
※2 Pendant switch and foot switch
is not available for G and D types.

Coupler
No No coupler
mark

C1
C2
C3
C4

Jack side B type
coupler
Hose side B type
coupler
Jack side C type
coupler
Hose side C type
coupler※J, E, F types are not available for QH2, QH3 and QH5（G）Without magnetic
switchPressure Control
No with pressure switch
mark※Gauge cock is standard
equipped for solenoid type

B1

（F）

Magnetic Switch
No With magnetic
mark switch

A3 φ100×1000

Operation Switch
No Without operation
mark switch

（E）

F0

Without pressure
switchF1

Without pressure
switch, with relief valve.

Electric pumps（A） （B） （C） （D）

Hydraulic Circuit

E1 Circuit for press (Double-acting)Circuit for press (Double-acting) with

E2 pressure gauge in pressure line

E3 Manual circuit for jack-up (Single-acting)
Manual circuit for jack-up (Single-acting)

E4 with pressure gauge in pressure line

E5 Solenoid circuit for jack-up (Single-acting)Solenoid circuit for jack-up (Single-acting)

E6 with pressure gauge in pressure line

E7 Manual circuit for jack-up (Double-acting)
Manual circuit for jack-up (Double-acting)

E8 with pressure gauge in pressure line

E9 Solenoid circuit for jack-up (Double-acting)Solenoid circuit for jack-up (Double-acting)

E10 with pressure gauge in pressure line

E11 Circuit for pressure hold (Single-acting)Circuit for pressure hold (Single-acting)

E12 with pressure gauge in pressure line

E13 Circuit for pressure hold (Double-acting)
ManifoldsNomark without manifolds

D1
D2
D3
D4

Single acting 2 ports
manifolds
Double acting 2 ports
manifolds
Single acting 4 ports
manifolds
Double acting 4 ports
manifolds

Circuit for pressure hold (Double-acting)

E14 with pressure gauge on pressure line

Manual circuit for clamp (Single-acting) with

E15 pressure gauge on pressure line

Manual circuit for clamp (Double-acting) with

E16 pressure gauge on pressure line

Solenoid valve circuit for clamp (Double-acting)

E17 with pressure gauge on pressure line

※1 Gauge cock is standard equipped for solenoid type with pressuregauge on pressure line.
※2 Pressure gauge on pressure line is standard equipped for E15,
E16, E17 circuits.
※3 Some hydraulic circuit is not available for certain valve operation.
Please refer to “QH customaization pump hydraulic circuit
adaptation table”.

73

O.J. Power® / AI-ZER® Electric pumps 72MPa

QH type Custom Build Pump
• Hydraulic circuit
Ｅ1

Ｅ2

Ｅ3

Electric pumps

Circuit for press(Double-acting)

Ｅ4

Ｅ5

Ｅ6

Ｅ7

Ｅ8

Ｅ9

Ｅ10

Manual circuit for jack-up(single-acting)Solenoid circuit for jack-up(single-acting)

Manual circuit for jack-up(double-acting)Solenoid circuit for jack-up(double-acting)

Pilot check valve

Stop check valve

Stop check valve

Stop check valve

Pilot check valve

maintains the pressure

maintains the pressure

maintains the pressure

maintains the pressure

maintains the pressure

on the advance as wellon the advance as wellon the advance as wellon the advance as wellon the advanceas hold position.

as hold position.

as hold position.

as hold position.

position.

Counterbalance valve

When retract, flow rate

When retract, flow rate

When retract, flow rate

When retract, cylinder

prevents cylinder fromcan be adjusted by thecan be adjusted by thecan be adjusted by thecan be lowered bylowering by its own

valve aperture.

valve aperture.

valve aperture.

brake applied by theweight.

counterbalance valve.

Ｅ11

Ｅ12

Ｅ13

Ｅ１4

Ｅ15

Ｅ16

Ｅ17

Circuit for pressure hold(single-acting)Circuit for pressure hold(double-acting)

Manual circuit for clamp(single-acting)

Manual circuit for clamp(double-acting)Solenoid valve circuit for clamp(double-acting)

Pilot check valve

Pilot check valve

maintains the pressure

maintains the pressure

on the advance as wellon the advance as well

as hold position.

as hold position.

Pilot check valve
maintains the pressure
on the advance as well
as hold position.
When setting pressure
on the pressure switch
is reached, motor willstop and pressure will
be maintained.

Pilot check valve
maintains the pressure
on the advance as well
as hold position.
When setting pressure
on the pressure switch
is reached, motor willstop and pressure will
be maintained.

Pilot check valve
maintains the pressure
on the advance position.
The clamp pressure canbe adjusted by relistvalve

QH customization pump hydraulic circuit adaptation table ( ○ mark means available for selection)
Valve
Operation

HydraulicCircuit

J
E
F
G
D
K
W

Ｅ１ Ｅ２

Ｅ3 Ｅ4

Ｅ5 Ｅ6

Ｅ7 Ｅ8

―
―
―
―
○
○
○

―
―
―
○
―
―
―

―
○
○
―
―
―
―

―
―
―
―
○
―
―

Ｅ9 Ｅ10 Ｅ１1 Ｅ1２Ｅ１3 Ｅ14

―
―
―
―
―
○
○

―
―
―
○
―
○
○

―
―
―
―
○
○
○

※1 Pressure gauge on pressure line is standard equipped for E15, E16, E17 circuits. ※2 Gauge cock is standard equipped for solenoid
type with pressure gauge on pressure line.

74

Ｅ１5

Ｅ１6

Ｅ１7

―
―
―
―
―
○
○

―
―
―
―
○
―
―

―
―
―
―
―
○
○

O.J. Power® / AI-ZER® Electric pumps 72MPa

QH type Custom Build Pump Examples

QH1-K-A1B1
HYDRAULIC PUMP(DOUBLE ACTING SOLENOID VALVE)
With pressure gauge(φ63), pendantswitch (3m)

QH1-K-A1E13
HYDRAULIC PUMP(DOUBLE ACTING SOLENOID VALVE)
With pressure gauge(φ63), pressure
hold circuit

QH1-K-A1E1
HYDRAULIC PUMP(DOUBLE ACTING SOLENOID VALVE)
With pressure gauge(φ63), circuit forpress

QH1-E-A1B1E5
HYDRAULIC PUMP(SINGLE ACTING SOLENOID VALVE)
With pressure gauge(φ63), jack-up
solenoid circuit

QH1-J-A1D1
HYDRAULIC PUMP(SINGLE ACTING WITH RELIEF VALVE)
With pressure gauge(φ63), 2-port
manifolds

QH1-K-A1B1D1
HYDRAULIC PUMP(DOUBLE ACTING SOLENOID VALVE)
With pressure gauge(φ63), pendantswitch (3m), 2-port manifolds

QH1-D-A1D4E13
HYDRAULIC PUMP(DOUBLE ACTING MANUAL VALVE)
With pressure gauge(φ63), 4-port
manifolds, pressure hold circuit

QH1-D-A1D4
HYDRAULIC PUMP(DOUBLE ACTING MANUAL VALVE)
With pressure gauge(φ63), 4-port
manifolds

Electric pumps

QH1-K-F0G0
HYDRAULIC PUMP(DOUBLE ACTING SOLENOID VALVE)
Without pressure gauge, pressure
switch, magnetic switch

75

O.J. Power® / AI-ZER® Air pumps 72MPa
Model number

GHA type Air Driven Pumps

GHA type
Air driven

for single-and double-acting jacks

Horsepower
DR: With manual control valve & relief valve
GR: With manual control valve & relief valve

Features• Use an air source of 0.6Mpa to create ultra-high hydraulic pressure of 72Mpa.
• Can be used in locations without electricity or where explosions must be prevented.

Dimensional drawing
with step-down transformer

Approx.150

249 (275)

Air supply
Rc3/8(Rc1/2)245 (300)

Electric pumps

Approx.405 (Approx.450)

Approx.350 (Approx.400)4-φ9(4-φ12)234 (275)
250 (300)() dimension shows GHA1–DR type.

operated. Direction is changed by ahand lever. For double-acting jacks.

Tank port
Rc3/8

12 (14)• Directional control valve is manually

195 (254)

Hydraulic circuit diagram

Approx.390 (Approx.490)

Advanced port
Rc3/8

• Directional control valve is manuallyoperated. Direction is changed by ahand lever. For single-acting jacks.

Items
Model

Working pressure
Low

High

Oil deliveryHigh

Air driven
Low

Boost pressure

Consumption

Oil
UsableWeightRequired approx.

GHA1/2－DR
GHA1－DR
Notes.① Specifications may change without notice. Check with us before ordering.
② Use air motor less than 2,000 minutes under no-load conditions. The RPM and discharge rate will vary depending on the load.
③ To help prevent rust, periodically run the pump at no-load.

76

Connection
portO.J. Power® / AI-ZER® Electric pumps 72MPa

Inverter Pumps• Available for QH or AH-type pumps.
• Allows the motor to run only when needed (idling stop).
※Only models equipped with solenoid valves.
• Compared to regular pumps, less startup power is required and the motor's load can be reduced.
• Compared to flow-control valves, inverters generate less heat, have a more stable discharge rate,
and reduce RPM variation in response to load fluctuations.
These characteristics make inverter-equipped pumps ideal for high-precision tuning control.
• Delivers the same discharge rate at 50Hz or 60Hz.

OptionElectric pumps• Hand operated switch with speed adjustment dial.
Speed can be adjusted even during operation by turning the dial.
*Only models equipped with solenoid valves.
• High pressure valves, stack valves.

Speed control dial
“Advance” button (A)A
R“Retract” button (R)Example － press work
Decelerate speed and pressurize the material
step by step.

Synchronized inverter pump configuration
Example － in case of jack up
As shown in the left figure, inverter pumps can beused with a flow controller to jack up uneven,heavy loads. In this example, a 1-to-1
pump-to-jack ratio is used.
(Synchronization error within 5%)

Operation
switchOperation source

Electric control board
SourceElectric lamp / Emergency halt button

77

O.J. Power® / AI-ZER® Electric pumps 72MPa
Example type

Inverter Pumps

QH5

V2TF54VF

K

Pump selection chart
Inverter selection chart
Valve selection chart

How to choose
1. Choose pump type from pump selection chart.
2. Choose inverter type from inverter selection chart.
( Only inverters marked
can be used with the pump you selected in step 1 )3. Choose valve type from valve selection chart.
( Only valves marked
can be used with the pump you selected in step 1 )Pump selection chart
Items

Electric pumps

Pump type

Motor
Capa kw

Oil delivery

Working pressure
High

Low

Oil amount

High

Low

QH1/2
QH1
QH2
QH3
QH5
AH7.5
AH10
AH20

Inverter selection chart ( Only inverters marked
Pump type
Inverter type

QH1/2

Motor option
Enclosure
Noise filter
Phase
Voltage
Inverter

UsableRequired

20
20
35

30
30
50

can be used )
QH1

QH2

QH3

QH5

No mark: Standard motor
VF: Motor exclusive for Inverter
No mark: No enclosure
54 : Fully enclosed
No mark: No filter
F : With noise filter
S: Single phase
T : 3 phase
1: 100V grade (AC100～115V) 2: 200V grade (AC200～240V) 4: 400V grade (AC380～500V)

Note) In case standard motor, 120% load at 60Hz.

Valve selection chart ( Only valves marked
Pump type
Inverter type

O Without valve
Single Manual Valve (With Pressure holding)Single Manual Valve (With Pressure holding)Single Manual Valve
Single Manual Valve
Double Manual Valve
Double Solenoid Valve (For high frequency usage)

W Double Solenoid Valve (For long excitation usage)
Without valve
Double Manual Valve
Double Solenoid Valve (For high frequency usage)

WS Double Solenoid Valve (For long excitation usage)

78

can be used. Valves marked

can be used under certain conditions. )

QH1/2

QH1

QH2

QH3

QH5

○
○
○
○
○
○
○
○

○
○
○
○
○
○
○
○

○
○

○
○

○
○

○
○
○
○

○
○
○

○
○
○
○
○
○
○

○
○
○
○

○
○
○
○

O.J. Power® / High pressure valves 72MPa

O.J.High Pressure Valves List
Directional Control valves（Valves that control the directions of oil flow)
Manual Switching Valves
Items
Model

Max.working
pressure (MPa)

Rating flow(ℓ/min)Max.oil flow(ℓ/min)Allowable backMounting Typepressure (MPa)T

N：Rc3/8
G：Gasket

ODV－6 － B

P
T
ODV－9N－ B
P
A T
ODV－12 － B
B P
A T
ODV－16 － B
B P

Hydraulic symbol
N：Thread connection
A：Thread connection（Indoor use）
B：Thread connection（Outdoor use）
G：Gasket typeRc3/8（P.A.Bport）
NPT1/4（T port）

ODV－3N－T
N
G

Weightapprox. (kg)Neutral：

Rc3/8

Items
Model

Max.working Rating flowpressure (MPa)(ℓ/min)WeightMax.oil flow Allowable backMounting Typepressure (MPa)approx. (kg)(ℓ/min)Voltage

Hydraulic symbol

1：AC100V
2：AC200V
D01：DC12V
D02：DC24V

B
E
G
KSV3 T －6－ F
HP

G：Gasket

KSV3G－9－T

G：Gasket

11.0

Mounting Type

Cracking pressure(MPa)

T：Rc3/8

1：AC100V
2：AC200V

High pressure valves

Super High Pressure Electromagnetic Switching Valves

Check Valves
Items
Model

Max.working
pressure (MPa)

Rating flow(ℓ/min)Max.oil flow(ℓ/min)OCV－6G

G：Gasket

A
OCV－9
G

G：GasketA
OCV－12G

G：GasketA
OCV－16
G

G：GasketA
OCV－19G

Weightapprox. (kg)

Hydraulic symbol
A：Thread connection（Indoor use）
G：Gasket type

G：Gasket
G：GasketOCV－25G

Pilot Check Valves
Items Area ratio
Model

OPCV－6A
OPCV－9A
OPCV－12G
OPCV－16G
OPCV－19G
OPCV－25G
OPDV－9G
OPDV－12A
OPDV－16G

Samll
pilot

Great
pilot

Min. Pilot Pressure Cracking pressure
Max.working Rating flow Max.oil flow Pilot Allowable
WeightMounting Type （At Max.Pressure）
pressure (MPa) (ℓ/min)(ℓ/min) back pressure (MPa)(MPa)
approx. (kg)（MPa）

G：Gasket
G：Gasket
G：Gasket
G：Gasket
G：GasketHydraulic symbol
A：Thread connection（Indoor use）
G：Gasket type

G：Gasket79

O.J. Power® / High pressure valves 72MPa

O.J.High Pressure Valve List
Pressure Control Valves (that control the oil pressure)
Items
Model

Max.working Pressure adjusting Rating flow Max.oil flow
Cracking
WeightMounting Type
Remarkspressure (MPa) range (MPa)(ℓ/min)(ℓ/min)pressure (MPa) approx. (kg)Thraeadconnection
Relief valves

Gasketinstallat type

Directoperated
type
Pilot
operapion
type( )indicate
free flow

Counterbalance
valvesHigh pressure valves

Hydraulic symbol

GasketPressure reducing
valvesVariable direct Drain volume
operated type

GasketProportional pressure
reducing
operapion typeMax.oil flow
Cracking
WeightMounting Type(ℓ/min)pressure (MPa) approx. (kg)Remarks

Proportional type

Flow Control Valves (that control the flow rate of oil)
Items
Model

Max.working
pressure (MPa)

Rating flow(ℓ/min)Hydraulic symbol

GasketRc3/8
A：Thread connction(Indoor use)
Stop valves

Ｂ：Thread connction(Outdoor use)
Ｇ：Gasket type

（Additional Machining
required）

GasketRc1/2（ ）indicate
free flow

Stop valve withcheckWith lock nut

Throttle valve

GasketGasketGasketGasketThrottle check valvesThread connction(Outdoor use)

With lock nut
With lock nut（ ）indicate
free flow

Prefill Valves
Items
Model

Prefill valves

80

Max.working Prefill volume Exhaust volume Minimum pilot pressure Pilot max.working Cracking pressure Pilot allowable back Pilot operated
WeightHydraulic(ℓ/min)(ℓ/min)pressure (MPa)(MPa)(ℓ/min)pressure (ℓ/min)pressure (ℓ/min) required oil (mℓ) approx. (kg)symbolCylinder innerpressureO.J. Power® / High pressure valves 72MPa
Model number

Directional Control Valves

D type switching valve
Port diameter

Manual switching valves

Mounting; N: Thread connection
G: Gasket typeFeatures• These valves are for manually switching the flow of oil.
• They control the movement (start, stop, and direction) of jacks and other equipment.
• Rotary disk construction offers excellent pressure retention while minimizing leakage.

Neutral; T: Tandem center
B: All port blocked
P: Tank port pressure

High pressure valves

Dimensional drawing
Dimensional drawing
Port B

Port A(Angle of rotation)(Angle of rotation)(P type only)
Port P

Port T

Approx.

(P type only)

Port Dr(P type only)

Port P,T,A,B(P type only)

Notes. 1. By shifting hand lever to advance side, the oil flows from P to A, B to T.
Turning to retract side, the oil flows from P to B, A to T.
While shifting hand lever, all ports connect to port T (Dr).
2. Neutral-and P-type valves (tank port pressure) have a drain port. Connect to tank directly.
Allowable backpressure of tank line is 72Mpa for P-type only.

Specifications
Items Max. working pressure
Model

Rating flow

Max. oil flow

Allowable back pressure

Weightapprox.

Hydraulic symbol

Mounting Type

Neutral:
N: Thread connection
G: Gasket type81

O.J. Power® / High pressure valves 72MPa
Model number

Directional Control Valves

D type switching valve
Port diameter

Manual switching valves

Mounting; N: Thread connection
G: Gasket type
Neutral; T: Tandem center
B: All port blocked
P: Tank port pressure

Features

High pressure valves• These valves are for manually switching the flow of oil.
• They control the movement (start, stop, and direction) of jacks and other equipment.
• Rotary disk construction offers excellent pressure retention while minimizing leakage.

Dimensional drawing

Dimensional drawing
Port B
Port B
Port B

Port APort Dr(Only P type)Port B

Port P(Angle of rotation)

Port P(Angle of rotation)(Angle of rotation)(Angle of rotation)

Port APort DrPort APort P

Port P

Port T

Port T

Note) Close any ports that are not being used.

Specifications
Items Max. working pressure

Rating flow

Max. oil flow

Allowable back pressure

Model

Weightapprox.

Hydraulic symbol
Neutral:Mounting Type
N: Thread connection
A: Thread connection(For indoor use)
Usable items
ODV-12,16
B: Thread connection(For outdoor use)
Usable items
ODV-12,16

Dimension chart
Items
Model

82

Dimension

O.J. Power® / High pressure valves 72MPa

KSV 3 G

6

Solenoid Valves Directional control valves

Model number

Electromagnetic switching valves

Mounting Type：G･･Gasket type
N･･Thread connection(with sub plate KSVM-6)

KSV type

F

2

Solenoid valve
Number of switching positions

Port diameterFeatures• Easy to carry out the circuit configuration according to various
applications by combining with the high-pressure stack valves.
• High frequency switching occures smoothly.
• Excellent durability.
• Compact and mounting method is simple.
• Five types of neutral formats of spool are available.
• Possibility of low pressure lossing characteristics is achieved.
• Usage of wet type solenoid,low switching sound,less shock,long life.
• Improvement of machining methods contributes to stable performance.

Spool type･- see chart below
Rated voltage 1･AC100V DO1･DC12V D1･ DC100V
2･AC200V DO1･DC24V D1.1･ DC110V

Main performance
Pressure resistance...1.2 times (86Mpa) of the maximum
use pressure (72MPa)
Work... Please use within ± 10% of rated voltage ltage.

Flow - Characteristics of pressure dropping.

High pressure valves

Pressure loss(MPa)

flow
flow
flow
flow

Flow

1. Both of the tank port (left & right) of the sub plate should have thecircuit holes.

Solenoid characteristics
AC
Rated voltage

2. Continuous excitation time should be limited to 1 minute or less.
3. Use hex bolts(M6×20L). Tightening torque 1.3kN･cm isrecommended.

AC100V AC200V

Starting current

Holding current

4. Please always use clean oil above NAS9 level as a working oil.
5. The valve installation surface roughness must be 6S and flatness
should be within 1μm. Use sufficient rigid sub plate for bottom.
6. The excitation of solenoid should be continued only afterDC
Rated voltage
Starting current
Holding current

DC12V

DC24V DC100V DC110V

2．
61A

1．
35A

0．
39A

0．
35A

finishing up first excitation.

7. KSV3T-6 is attached with sub plate KSVM-6.

Solenoid wiring connecting method
Connect Terminal ① ②

working voltage(Replacement of wire connection is not necessary according to region 50/60Hz)

for 100V
for 200V,,83

O.J. Power® / High pressure valves 72MPa
Model number

Solenoid Valves

Solenoid valve
Number of switching positions

Electromagnetic switching valves

Mounting Type;
G: Gasket type
T : Thread type (with subplate KSVM-6)

Features

Port diameter

High pressure valves• These valves use a solenoid to change the direction of oil flow.
The solenoid is controlled by electrical signals.
• They control the movement (start, stop, and direction) of jacks
and other equipment.

Spool type - see chart below
Rated voltage

D1…DC100V
D1.1…DC110V(Thread type)(Gasket type)

Dimensional drawing
P portDimensional drawing

T port4-M6 Hex socket bolt hole

P, A, B port
4-M6 Hex socket bolt hole2-T port

B portA portSpecifications
Items

Max. working pressure

Model

Rating flow

Max. oil flow

Allowable back pressure Allowable changeover time
time

Weightapprox.

KSV3G－6（B、H、E、P、F）
KSV3T－6（B、H、E、P、F）
KSV3G－6S（B、H、E、P、F）
KSV3G－9（T）
Spools at neutral position
SOL-A

Model

SOL-B
Symbol of spool

84

T

O.J. Power® / High pressure valves 72MPa

High Pressure Stack Valve List
Features• Circuit can be easily configured according to various applications.
• Applicable pumps are QH1/2～QH2.
• Change or adding hydraulic circuit is easy. Very compact.
• No pipings are required.Reliable and easy to maintain.

Valve List
Name

Swiching valvesEletromagnetic
Switching Valve

KSV3G－6

Manual Swiching ValveODV－6G

PressureCounterbalance valve
control valves

Counterbalance valve（External Pilot Type）
Check valve
Pilot check valve（For in-line use）

Directional
control valves Pilot check valve（For oﬀ-line use）

S－PCV－6W

Throttle valve

S－TV－6

Throttle check valve

Flow control valve（AB）
S－TCV－6（AB）

S－OSC V－6A

（AB）－I－（L）S－FCV－6（AB）－O－（L）S－FCV－6

Note

ＡＢ
ＰＴ
ＡＢ
ＰＴ

Ｐ

Ｔ

Ｂ

Ａ

Ｐ

Ｔ

Ｂ

Ａ

Ｐ

Ｔ

Ｂ

Ａ

Ｐ

Ｔ

Ｂ

Ａ

Ｐ

Ｔ

Ｂ

Ａ

Ｐ

Ｔ

Ｂ

Ａ

Ｐ

Ｔ

Ｂ

Ａ

Ｐ

Ｔ

Ｂ

Ａ

Ｐ

Ｔ

Ｂ

Ａ

Ｐ

Ｔ

Ｂ

Ａ

Ｐ

Ｔ

Ｂ

Ａ

Ｐ

Ｔ

Ｂ

Ａ

Ｐ

Ｔ

Ｂ

Ａ

※

3 types for pressure control, i.e.
P line, A line and B line. 2 types forpressure adjustment, i.e. H and L.

※

Prevent load from dropping due togravity for press machine etc. A
line and B line, 2 types.

※※※

Backﬂow is possible by applying
pilot pressure.
For A line, B line, 2 types.
Oil can ﬂow directly to tank line
without passing through switchingvalve.

※※

Base plate

BP－G01
BP－G03
BP－G01－PG

Mounting block for PG, PS

BP－003

Oval shape gauge stand04
KGS－ 06
08

Mounting
Bolt for stack valve（ ）For A line and B line, 2 types.
For A line and B line, 2 types.

Meter-in.

※for A line and B line, 2 types
Meter-out.

※（AB）IO－（L）VP－KS1

Mainly for jack-down application by
applying return-pressure.
Control the ﬂow in one direction in
the circuit. To prevent backﬂow. A
line, B line,2 types.

For A line and B line, 2 types

Meter-in/out 2 way control valve
with check block.

Flow control with check block S－FCV－6

Mounting Plate
for Solenoid
Valve plate
Valve
Mounting
Port Blockfor Q typepump

S－PCV－6(A)－O－（F）

Double pilot check valve

Stop valve with check

Flow control
valves(Pressurecompensation
type)

（）
（）
L
－
S－CDV－6（（AB）
H）
S－RCV－6（AB）
S－CV－6（AB）
S－PCV－6（AB）－I－（F）ALS－DDV－6 B －HPHydraulic symbol

High pressure valves

Direct relief valve

Flow control
valves

Model

※

Ｐ

Ｔ

Ｂ

Ａ

Ｐ

Ｔ

Ｂ

Ａ

Ｐ

Ｔ

Ｂ

Ａ

BP-G01 with pressure gauge line.
Use by mounting KGS.
Also mounting BP-003 is possible.

Ｐ

Ｔ

Ｂ

Ａ

Used when 2 lines of pressure gauge andpressure switch are necessary for BP-G01.
Use by mounting KGS.

Ｐ

Ｔ

Ｂ

Ａ

For KSV3G－6
For QH1/2・QH1・QH2For QH3・QH5（Pline below 8ℓ/min）

ＳＢ１０～１５

For mounting ﬁttings of pressure gauge orpressure switch. For P-G01-PG and BP-003.
3 types of screw size i.e.G1/4, G3/8 and G1/2.

6 types of SB10・SB11・SB12・
SB13・SB14・SB15

Notes.
①※ Shows A line hydraulic symbol.
② A and B line are exchangable by revolving 180°of Counterbalance Valve, Check Valve, Pilot Check Valve,
Throttle Valve, Throttle Check Valve.(The off-line pilot check valve is for A line only.）85

O.J. Power® / High pressure valves 72MPa

High Pressure Stack Valves Circuit Application Example
Features

High pressure valves• Combination of high pressure stack valves enables circuit configuration
suitable for various applications.
• QH 1/2 ·QH 1 pumps are compatible for stack valves.
• Furthermore,we propose circuit configurations suitable for your application.
Please contact us separately.

QH1－K type(5) Pressure holding（Press work purpose）(1)Jack Up Circuit(2)Jack Up Circuit（Manual Operation）

KSV3G－6－F

ODV－6G－T

VP－KS1S－OSCV－6A

S－DDV－6B－L

S－DDV－6B－L

S－PCV－6A－I

BP－G01

S－FLV－6A－O

Ｐ Ｔ Ｂ Ａ

BP－G01
QＨ１/２・１・２

Ｐ Ｔ Ｂ Ａ

QＨ１/２・１・２(3)Jack Up Down Circuit(4)Jack Up Circuit（Manual operation for single acting）

The speed of the jack-down will be faster by the area ratio of
the jack.S-PCV is also not necessary, if the load upholding
stop is short time or not needed.

ODV－6G－T

KSV3G－6－F

S－OSCV－6A

VP－KS1
S－PCV－6A－I

BP－G01S－RCV－6A
BP－G01
QＨ１/２・１

Ｐ Ｔ Ｂ Ａ

QＨ１/２・１(5)Pressure Holding（Press work purpose）(6)Pressure Holding（Press work,Filter press etc.）
Long period holding by PS control

KSV3G－6－E

KSV3G－6－E

VP－KS1

VP－KS1

S－PCV－6A－I

S－DDV－6B－L

S－CBV－6B－L
BP－G01
QＨ１/２・１

Ｐ Ｔ Ｂ ＡＰ Ｔ Ｂ Ａ
QＨ１/２・１

86

S－PCV－6A－I
BP－G01－PG
BP－003
KGS(2pcs)

O.J. Power® / High pressure valves 72MPa

High Pressure Stack Valves Circuit Application Example
7.Pressure Holding（Powder molding,Press work purpose）

ODV－6G－T

KSV3G－6－E

S－DDV－6A－H

VP－KS1

S－DDV－6B－L

S－DDV－6A－H

S－PCV－6A－I

S－CV－6A

S－CDV－6B－L

S－PCV－6A－O

BP－G01
QＨ１／２・１

8.Pressure Holding（Clamping,Press work purpose）

QＨ２

Ｐ Ｔ Ｂ Ａ

9.Clamping（In case of short time, PS not needed）

10. Clamping（For single acting）

KSV3G－6－F

KSV3G－6－F

VP－KS1

VP－KS1

S－PCV－6A－I
BP－G01－PG

S－DDV－6B－H
S－PCV－6A－I

KGS

QＨ１/２・１

Accessories

Ｐ Ｔ Ｂ Ａ

BP－G01
Ｐ Ｔ Ｂ Ａ

BP－G01ｰPG
QＨ１/２・１

11. Clamping（Manual Operation）

Hand pump

ODV－6GｰT• Stack valves can also be mounted on hand pumps.
• For outdoor work that requires hydraulic control where there
power supply is not available.

S－PCV－6A－I
OSVｰ6GN+SｰDMｰSｰAT
BP－G01－PG
QＨ１/２・１

TWAD－2.3 type(3) Jack up / down circuit• While adjusting the position of the load, you can lower the loadwith brake function provided by the valve.This can prevent sudden
dropping of load during switching lever from advance to return.

Hand pump• We can manufacture hydraulic pump unit that fits your applications
through combination of gasket mounting type high pressure valvesand manifolds for QH type (QH1/2, QH1 excluded) and AH type pump.
• Compact,leakage lesser than steel piping and easy maintenance.
• Most suitable circuit configurations can be proposed,
please consult with us.

87

O.J. Power® / Accessories 72MPa
Model number

O.J. Standard Accessories

PGO

Pressure gauge
O.D. of gauge

Pressure gauges

Full scale

Features• Glycerin-filled gauges (PGO-type) reduce deviations caused by vibrations, making it easy to read the needle.
• Gauges report hydraulic pressure in MPa.
• If special scales (kN, Pa, PSI, etc.) or high-precision (0.6 or 1.0 degree) are required, please specify when ordering.
• When attaching a kN-scale hydraulic pressure gauge, the bore and effective area of the jack cylinder must be specified.
The pressure gauge can only be used with that jack.
• The orientation of the gauge will determine the amount of packing required.

Dimensional drawing

Two face width

Accessories

Hex.opposite side

Specifications
Items Max. working pressure

Max. scale

1 scalePrecision

Dimension chart

Model

Notes.① Glycerin-filled gauges (PGO-type) reduce deviations caused by vibrations, making it easy to read the needle.
② If special scales (kN, Pa, PSI, etc.) or high-precision (0.6 or 1.0 degree) are required, please specify when ordering.

Gauge adapters

Model number
Pressure gauge adapter
Pressure

Application
Use a gauge adapter to install a pressuregauge midway through a hydraulic circuit.

Tighten the nut while holding the pressuregauge in the direction you want it to face.

Connection thread

Specifications
Items Max. working pressure

Nut

Model

Nut

type

Copper packing for attachedpressure gauge
Dimensional drawing

type

Model number
Copper packing forpressure gauge
Nominal port diameter

Gauge cocks

Model number
Gauge cock

The orientation of the Max. working pressuregauge will determine
Port diameter
the amount of packing
Dimensional
required.

drawingSpecifications
Items

Specifications
Items Max. working pressure

Model
Model

88

O.J. Power® / Accessories 72MPa

KPS

Model number

Standard Accessories

800

Pressure switche
Max. working pressure

Pressure switches

38

Approx. 1 2 0

Dimensional drawing

G3/8
φ5

KPS－800

Specifications

KPS－210
KPS－800

85

Items Pressure setting range Difference of switching point Repeat accuracy Contact configuration Contact capacity,Resistance load(A)1a,1bAC125V
AC250V

Weightapprox.(kg)KPS－210

3～21

1～3

±0.5

1a,1b

10.1

10.1

0.4

KPS－800

10～80

2～4

±1

1a,1b

10.1

10.1

0.4

2(ＮＣ)

3(ＮO)

1(COM)

ESV

Model number

6

Falling prevention valve

Features

Port diameter (mm)• For stopping the flow of oil immediately even if the piping is damaged at the time of heavy load,so that the jack does not descend rapidly due to the load.
Approx. 9 5
Install on the jack according to the actual needs.
Dimensional drawing

Items Max.working pressure
Model

Shut off flow

Connection thread（ℓ/min）

Jack side

Hose side

15

R3/8

Rc3/8

15

NPT3/8

Rc3/8

25

R1/2

Rc1/2

ESV－6
ESV－6NJack side

ESV-6

Specifications

72

ESV－9

26

Accessories

Falling prevention valves

Hydraulic symbol

Hose side

Hydraulic symbol
Max.working pressure 72MPa

Falling prevention valve
ESV type

Hose

Hydraulic jack

Safety valves for hydraulic jack

JSV

Model number

6

Safety valve• Screw directly into the return port of the double acting jack.
To prevent breakage of hydraulic jack when return circuit is blocked due to ill connectionof self-sealing coupler. Please install on the jack according to the actual needs.

Port diameter (mm)Dimensional drawing
approx. 9 5

Dimensional drawing

approx. 8 7

JSV-6（Safety valve）

Items Max.working pressure
ModelMax.oil flow（ℓ/min）

JSV－6
ERV－6
ERV－6N72

ＮＰＴ３/８（Ｒ３/８）

ERV-6N（Safety valve＋Cheese＋Bushing）

JSV-6

Specifications

2

Connection thread
Jack side

Hose side

R3/8

－

R3/8

Rc3/8

NPT3/8

Rc3/8

Ｒｃ３/８

ＨＥＸ３２

Jack side

approx. 6 0

approx. 5 2

ＨＥＸ３２

Hose side

approx. 9 5

Featuresapprox. 8 0

Model

2.5

18

Width across ﬂats 19

ＥＲＶ－６Ｎ（ＥＲＶ－６）
Hydraulic symbol

Safety valve JSV type

Safety valve ERV type89

O.J. Power® / Accessories 72MPa

Model number

O.J. Standard Accessories

B-type coupler
Port diameterB-type couplers

Jack side (J), Hose side (H)Features

How to opearate• B-type couplers are a self-sealing, hand-tighten type.
• Do not use tools to connect or disconnect these couplers.

• Connect: Push hose-side male coupler into jack-side female coupler.
Completely tighten the union nut by hand.
• Disconnect: After completely loosening the union nut,
disconnect the couplers.

Jack side

Hose side

Dimensional drawing

Self seal

Accessories(Stainless steel)Jack side

Hose side

Dimensional drawing

Without self seal

Specifications
Items Max. working pressure

Jack side

Bー10

72

Hose side

Model

Connection thread

Model

Bー10JG

NPT3/8 male thread

Bー10HG

Model

Connection thread

NPT3/8 female thread E, EC, EL, EF typefemale thread T, JN, LJA typemale thread

female thread E, EC, EL, EF typemale thread
male thread

female thread Stainless steel used for rust prevention.

male thread

female thread

male thread

female thread Stainless steel used for rust prevention.

male thread

female thread

male thread

female threadNote) Available for combination B6-JG & B-6H.

Dimension chart
Dimension

Items

Clamping widthJack side Hose side

Model

Bー10

90

86.6

62.6

40

Remarks

36.95 25.4

32

O-ring, B-ring

Weight approx.
Jack side Hose side

0.23

0.12

O.J. Power® / Accessories 72MPa
Model number

Standard Accessories

C-typePort diameterC-type quick-lock couplers

Jack side (J), Hose side (H)Features• Working pressure is 72MPa.
• Quick connect couplers are easy to operate, making them ideal for a wide range of applications.
• No oil leakage when disconnecting.
• Equipped with a locking system to prevent disonnections during use.

Jack side

Hose side

Dimensional drawing
SleeveClamping
width

Clamping
width
Approx.

Accessories

Dimensional drawing
Jack side

Hose side

Clamping
width

Clamping
width
Approx.

Jack side

Hose side

Dimensional drawing

Clamping
width

Clamping
width
Approx.

Specifications
Items Max. working pressure
ModelJack side
Model

Connection thread

Hose side
Model

Connection thread

Applicable jacks

All items for
O.J. Power Jack

Applicable pumps

All items forhand pumps
All items forelectric pumpsNote) C-6 is combined with one set between C-6J for jack and C-6H for hose. (As well C-9, C-12)

How to operate• How to connect(1) Pull back collar on hose coupler and insert it into the jack coupler.
(2) After inserting, let go of the collar and the couplers are connected.
(3) Turn the collar 90° to activate the lock.
(4) Always lock the coupler after connecting.

• How to disconnect(1) Release lock.
(2) While pulling the collar back, pull out the hose coupler.
Notes.① Do not pressurize a hose without connecting it to a jack.
② Release any residual hydraulic pressure before connecting or disconneting couplers.

91

O.J. Power® / Accessories 72MPa
Model number

O.J. Standard Accessories

RH: Rubber hose
NH: Nylon hose
Hose length (m)High-pressure rubber hoses

No mark : no coupler this side
B: B coupler, C: C coupler• Usable fluid : General mineral oil.

Features

No mark: H side; J: J side
B: B coupler C: C coupler
No mark: one side has no coupler

Both ends have metal R fittings with male threads.

No mark: H side; J: J side
Protective cap: No mark: No wire
K: With wireHigh pressure rubber hose RH

Dimensional drawing• Fitting weight includes both springs.

Specifications
Items Max. working pressure

Max. oil flow

Connection
threadModel

Accessories

RH6N

Bー10H, Bー10J

8

Dimension
Min. bend radius Inside diameter

90

Weight approx.

Outside diameter

6.3

15

Hose

NPT3/8

Metal fitting

0.45

0.6

Bー6H, Bー6J
Cー6H, Cー6J
Bー9H, Bー9J
Cー9H, Cー9J
Bー12H, Bー12J
Cー12H, Cー12J
Hose length
Hose type

Standard dimensions

Special order hose length

Rubber hose

High-pressure nylon hoses• Usable fluid: General mineral oil or phosphoric ester-base hydraulic fluid.

Features• Both ends have metal R fittings with male threads.

• C-type couplers will only fit R3/8 or R1/2 threads (see A).

High pressure nylon hose NH4High pressure nylon hose NH5·NH8·NH11·NH15A

CEJN

Dimensional drawing

G1／8

ＨＥＸ.19※Both ends of NH4 hose do not come with springs.
※If couplers are to be attached to NH4 hose, thecouplers will be both male and female as 1 set.

• Fitting weight includes both springs.

Specifications
Items Max. working pressure

Max. oil flow

Model

4

72
100

2

Connection
threadCoupler forNH4 hoseuse only

Dimension
Min. bend radius Inside diameter

60

4

Weight approx.

Outside diameter

8

Hose

R3/8

Metal fitting

0.04

Bー6H, Bー6J
Cー6H, Cー6J
Bー9H, Bー9J
Cー9H, Cー9J

72

Bー12H, Bー12J
Cー12H, Cー12J
Bー16H, Bー16J

Hose length
Hose type
Nylon hose

92Standard dimensions

NH4～15Special order hose length

0.5

O.J. Power® / Accessories 72MPa

Model number

O.J. Standard Accessories

Manifold
DS: Single, DW: Double
Port diameter

Manifolds

Number of jack connections

Features

V0: Without stop valve, V1: With OSV-6A,
V2: With OSV-6B, V3: With OSV-6G,
V4: With OSV-9A, V5: With OSV-12A• Designed to operate multiple jacks or hydraulic tools, simultaneously or individually,
with only one pump.
Single-acting (DS) and double-acting (DW) manifolds are available.

Dimensional drawing

Dimensional drawing
P-portP-portDimension chart(unit: mm)

Dimension(unit: mm)

Dimension

Model

Model

Dimensional drawing

Dimensional drawing

T-portP-portT-portA-port(unit: mm)

Approx.

Approx.

Dimension chart

P-portA-portB-portB-portDimension chart

Dimension
Model

Accessories

Dimension chart

Approx.

A-portApprox.

A-port(unit: mm)

Dimension
Model

93

O.J. Power® / Hand pumps 100MPa
Model number

TWAX Hand Pumps

Hand pumpPressure: 100MPa

for single-acting jacks

Usable oil volume
Safety valve (High press)
Safety valve (Low press)

Release valve

Suction & delivery (Low press.)
Suction & delivery (High press.)

Air vent plug
Oil check bar and oil supply port

Handle bar Hook
Oil tankSpecifications
Items Usable oil volume
ModelWorking pressure MPa

Oil delivery (

High

High

Low

Note) ①Use ISO VG10 hydraulic working oil or equivalent.

/stroke)Connection port

Low

Weightapprox.

7.8
8.5②For double-acting jack type is available upon request.

Hand pumps

O.J. Power® / AI-ZER® Electric pumps 100MPa

J

Model number

XEX Compact Electric Pumps

XEX-type pumpfor single-acting jacks

Usable oil volume (L)J : Release valve
G: With pressure gauge
S : With pressure switch
GS: With pressure gauge & pressure switch

Application• Ideal as a hydraulic power source when installing or working on marine engines.
• A compact, lightweight pump for 220V power sources.

Dimensional drawing
Hydraulic circuit diagram
Advance port

Approx.

Tank port

Advance port

How to operate• Close release valve, then press the ‘A’ button to start the motor and deliver the oil.
• When you release the ‘A’ button, the motor will stop.
The jack will remain pressurized and stay in its current position.
• Open the release valve to allow the jack to return.

Each 3m

Electric circuit diagram

Parts list
Parts nameQ’ty

Parts nameOperation switch

Pressure switch

Release valve

Plate

Motor

Oil tank

Pressure gauge

Cover

Air vent plug
(Oil supply port)

Rubber feet

Q’ty

A
R

Port Block

Tap

AC220V

Specifications
Items
Model

Working pressure
High

Motor

Oil delivery
Low

High

Low

Capa

Voltage V

Oil
UsableWeightRequired

approx.

Single ph.220V

Notes.① Oil delivery for 50Hz is the same as 60Hz.

94②Working oil: ISO-L-HV-VG15.

③For double-acting jack type is available upon request.

Connection
portO.J. Power® / Electric pumps 100MPa

J A 3.8

Model number

GX-type Electric Pumps

GX typeHorsepower

for single-acting jacks

J: Release valve
A: With stepdown transformer
B: Without step-down transformer

Application

Voltage• Ideal as a hydraulic power source when installing or
working on marine engines.

Dimensional drawing withstep-down transformer

How to operateElectric circuit diagram
MC OL

AC 220V S1
50/60Hz R1

A

M

PS OL

MC

12

Electric circuit diagram
Electric circuit diagramwith step-down transformer

LP HP

M

Items

Working pressure
High

Model

GX1－J※※

AC380V/100V

Tr
CP

A

PS OL

A

8

6
9

MC

10

• Pressure Gauge, PGO—100X1200• Step-down transformer

11

7

ADVANCE
Rc3/8
DRAIN
Rc3/8

Oil

Motor

High

Low

0.4
0.33

3.0
2.5

Capa

1

GX1

4
3
5

OptionOil delivery

Low

M

OPERATION CODE
3m

Insu

Pole

Rpm

Voltage

1800
1500

3 ph.
380V

WeightRequired approx.

Usable② Voltage available on request

Notes.① Figures of delivery and r.p.m. of motor showing at 50Hz in right side, at 60Hz in left side.
③ Motor is 120% load at 60Hz.

Accessories (100MPa)

NH

Model number

2 C ※ C ※Electric pumps

Specifications

U
V
W

15

254

AC 380V
50/60Hz

MC OL

E
R
S
T

275
300

4-φ12

14

ADVANCE
Rc3/8

POWER CABLES
2mm・4C 3m

APPROX.520

AC 380V E
R
50/60Hz STAPPROX.395
300
275• Close release valve,then press the ‘A’ button to start the motor and deliver the oil.
• When you release the ‘A’ button, the motor will stop.
The jack will remain pressurized and stay in its current position.
• Open the release valve to allow the jack to return.

Nylon hose for 100MPa

Nylon hoses

Hose length
Quick coupler for 100MPa
No mark; H side J: J side

Dimensional drawing

Quick coupler for 100MPa
No mark; H side J: J side

Specifications
Items Max. working pressure

Max. oil flow

Connection
CouplerModel

Dimension
Min. bend radius Inside diameter

Weight approx.

Outside diameter

Hose

Metal fittings

NH5
Hose length
Hose modelStandard length

Special order hose length

Nylon hose

Quick couplers

CX

Model number
CX-typeJack side

Hose side

Port diameter
J: Jack side H: Hose side

Specifications
Items Max. working pressure
Model

CX

Jack side
Model

Connection thread

Hose side
Model

Connection thread

Remarks
100MPa equipment

95

O.J. Power® / Z series 200MPa
Model number

Z type Power Jacks

Z typeCapacity (ton)S (Spring return) type

Spring return (S)Stroke (cm)FeaturesPower jacks• Piston rod is plated with hard chrome.
• Special steel was used to make every part,allowing the jack to be lightweight and compact.
• Used in precision molding presses, nuclear power plants,
shipyards, diamond processing, and other super-high pressure applications.

• Allowable lateral load is 50% of lifting capacity.

Dimensional drawing
Dimensional drawing

Applicable models
Applicable models
With carry ringWith handle

Specifications
Model
Items

Unit

CapacitykN（ton）

StrokeClosed height(H)

Cyl. outer dia.

(D)

Cyl. bore dia.

(d)Cyl. effective area
Oil capacity
Weightapprox.

Rod dia.

(f)

Head dia.

(o)Port size(m)(g)
Height to coupler (L)Hand pump
Pumps
applicable Electric pump
Included coupler

96

O.J. Power® / Z series 200MPa
Model number

Z type Power Jacks

Z typeCapacity (ton)H (Hydraulic return) typeHydraulic return (H)Stroke (cm)Features• Piston rod is plated with hard chrome.
• Special steel was used to make every part,allowing the jack to be lightweight and compact.
• Used in precision molding presses, nuclear power plants,
shipyards, diamond processing, and other super-high pressure applications.

• Returns by hydraulic pressure.
• Allowable lateral load is 50% of lifting capacity.

Power jacks

Applicable models
Applicable models

Specifications
Model
Items

Unit

kN（ton）

Capacity
StrokeClosed height(H)

Cyl. outer dia.

(D)

Cyl. bore dia.

(d)Cyl. effective area
Oil capacity
Weightapprox.

Rod dia.

(f)

Head dia.

(o)Port size(m)(g)
Height to coupler (L)Distance between ports (P)Hand pump
Pumps
applicable Electric pump
Included coupler
Note) TWAZ-※P pumps require a manual, directional control valve.

97

O.J. Power® / Z series 200MPa
Model number

Z type Low Profile Jacks

200MPa Low profile
Capacity (ton)G (Gravity return) type

Gravity return
Stroke (cm)Features• Outer force is required when piston rod returns.
• Light-weight, compact type used special steel to each parts.
• Applicable for propeller setting.
• Take care that piston has no stopper.

• Piston rod may fall down when it turns up-side down.

Stop jack up where
stroke limit line
appeals (1~2mm)

Dimensional drawing

Don’t jack up
beyond stroke
limit line (red)Oil jumping

Power jacks

Specifications
Model
Items
Unit
CapacitykN（ton）
StrokeClosed height (H)Cyl. outer dia. (D)(d)
Cyl. bore dia.
(f)
Rod dia.
Cyl. effective area
Oil capacity
approx.
Weight(m)
Port size
Height to coupler (L)Pumps applicable
Included coupler
Required outer force

O.J. Power®

Propeller Setting Machines

G

Model number
Propeller setting machine
Capacity (ton)Gravity return (G)• This equipment is applied for both press-in and extraction of propeller to andfrom shaft. Following sketch is shown to press in propeller shaft which hydraulicjacks are set. According to propeller size or its setting way, arrangement of jacks
can be changed. Also piping arrangement can be made as kind of vessels.

Stroke (cm)Number of jackContact us for specific in detail.

Reference
Hydraulic jack(two couplings)
Link plate
Coupler

Bolts & nuts
Hydraulic pump

Nylon hose

PipingHydraulic jack
Capacity
Q’ty
Model
StrokeClosed heightMax. usable pressure
Hand pumpType
PipingSeries piping

98

Hydraulic jack
Capacity
Q’ty
Model
StrokeClosed heightMax. usable pressure

10 units
Gravity return (G)Hand pump

Series piping

Hydraulic jack
Capacity
Q’ty
Model
StrokeClosed heightMax. usable pressure

12 units
Gravity return (G)Electric pumpType
PipingParallel piping with manifolds

Electric pump(Two 1000kN jacks)
6 units
Spring return (S)Electric pump
Type
QH1

Parallel piping of single-acting Piping
Parallel piping with manifolds
jacks with manifolds

Electricpump

Parallel piping of twin-type
jacks with manifolds

O.J. Power® / Z series 200MPa (Made-to-order)

ZR 100 G 1

Model number

ZR Type Ultraslim Power Jacks

A1 B1

ZR Type
Capacity (ton)G (Gravity return) type

Gravity return (G)Stroke (cm)Features

Tilting angle

Bushing• Available for installation of marine engine.
• Outer force is required when piston rod returns.
• When being above limitation of stroke, alarm works to spatter around here with working oil from Jack.
In case of working alarm, take care that seals are broken and cannot use. (Replacement seals are available.)• Piston rod may fall out when turned up-side down.
• Make sure to place Jack on flat face and use the jack.
If not flat on ground surface of jack, bottom of jack may become deformed.
• Applicable for the inclination of load face.
• Tilting degree can hold regardless of stroke position.
• Applicable for attached couplings for 200MPa.

How to selectPower jacks• Based on model number, decide model in following procedure.
①Select Jack model in accordance with Jack select chart.
②Select tilting degree in accordance with tilting degree required.
③Select bushing length in accordance with bushing required.

Dimensional drawing

Approx.

Flat face

Specifications

Model

Items Capacity
Unit
KN (ton)

ZR100G0.5
ZR100G1
ZR200G0.5
ZR200G1

1000
(100)
2000
(200)

Required Mass
Stroke Working Test
Pressure Pressure Oil Volume (Jack)
mm

5
10
5
10

Approx.
MPa

199
193

MPa

200

Dimension (mm)H

Approx. Approx. Head Inclination Degree (a˚)
kg
mL
1˚
2˚
3˚

25
51
52
104

2.8
3.4
6.2
7.3

D

f

o

L

25
26 27.5
135 80 65 1230
31 32.5
28 29.531
190 115 94 13
33 34.5
36

L1

4
5

Long Bushing
L0(Mass Approx. kg)

105 205 305(0.3) (0.4) (0.6)

99