RoHS Compliant

SeriesBore Size

φ16、
φ20

NEOKT

CAT No. NEOKT 19-6

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Three-jaw Swivel Gripper

Series【Bore Size:φ16、
φ20】

Free movement of high-precision gripper by external drive!
Free piping andwiring direction

High-precisionand high-rigidity
linear guide

Air port and switch
groove are provided
on 2 faces.

Gripping Repeatability± 0.01mm

Rotational Runout
Accuracy ± 0.05mm

For details☞ P.14

Replaceable
main bodyLinear Guide

Radial Bearing

Positioning Boss
The outer ring of the radial
bearing can be used for
positioning.

Radial Bearing

Connection Part Two types of connection parts are available.
Shaft Type

Coupling, etc.

2

Hole Type

Shaft, etc.

★Rotation angle can be controlled by external force (e.g. motor)

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Product Features
With a swivel joint on the air gripper, NEOK series is compact-sized and achieves
integration. The gripper is moved by external drive.
Since only the gripper part can be moved with the main body fixed, air pipe and switch
wire are not twisted.

Main Body

Gripper part or cylinder part can be purchased separately
Easy setup change and maintenanceyFinger TypeThree-jaw TypeStandard Type

Application Example

For constant direction, angle control, inversion movement, etc.

■Appearance Inspection■Gear Alignment■Temporary Tightening

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Three-jaw Swivel Gripper

NEOKTSeries■Model Code Example
NEOKT Series

Main Body + Case Assy

NEOKT

16 C

1 ※ ZE235 A 2SeriesName

Number of Switches
Bore Size

1 : 1 Switch ※Can be mounted up to 4 switches.
2 : 2 Switches For orders with 3 or more switches,

Drive Shaft
Connection Part

16 : 16mm
20 : 20mm

2 switches are assembled, andthe rest is delivered as attachment.

1 : Shaft Type
2 : Hole Type※☞See P.2

Model Code Example

Type of Action
C : Double Acting

Switch Lead Wire LengthA : 1000mm
B : 3000mm●Switch Type No Code: No Switch
ZE135

ZE235

2-Wire System Solid State Switch, Straight Type

2-Wire System Solid State Switch, L-shaped

ZE155

ZE255

3-Wire System Solid State Switch, Straight Type

3-Wire System Solid State Switch, L-shaped●Detailed specifications ☞P.15~17

Case Assy

DB

NEOK

16 C

1
Drive Shaft Connection Part

Series Name

1 : Shaft Type
2 : Hole TypeType of Action

Case Assy
Bore Size
16 : 16mm
20 : 20mm

C : Double Acting※Case Assy is common to the NEOK and NEOKT series. (φ16, φ20 only)

Main Body Assy

DG

NEOKT

16 C

Series Name
Main Body Assy

Type of Action
C : Double Acting

Bore Size
16 : 16mm
20 : 20mm

Rotary Seal Set (Repair Parts Set)

NEOK

16 C

SS/SET
Rotary Seal Set

Series Name
Bore Size
16 : 16mm
20 : 20mm

Type of Action
C : Double Acting

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■Specifications
NEOKT-16

NEOKT Series

Model
Item

NEOKT-20

Gripper Part
Double Acting

Type of Action
Bore Size

[mm]

φ16

Opening/Closing Stroke

[mm]

6

φ20
10
Air

Fluid

0.1～0.7

Operating Pressure Range [MPa]

1.05

[MPa]

Maximum Operating Cycle [cpm]120Operating Temperature Range [℃]0～60
Not Required

Lubrication

M5×0.8

Pipe Bore
Effective Gripping Force

Opening Force ：27
Closing Force：20[N]

0.5[MPa], L=30[mm]
Gripping Repeatability[mm]

Moment of Inertia[kg・m2]

Minimum Starting TorqueOpening Force: ：47.5
Closing Force：35.5±0.01

35×10－6

12×10－5

Swivel Part

[N・m]

0.4

0.25
120

Allowable Rotational Speed [rpm]

Not Required (Required for Regular Maintenance) Note 1)

Lubrication

Common±0.05 Note 1)

Rotational Runout Accuracy
Mass

750

340

[g]

Specifications / Allowable Load and Allowable Moment

Proof Pressure

Note 1) For details about lubrication method and rotational runout accuracy, ☞see P.14

■Allowable Load and Allowable Moment

M A＝FA×L A
M B＝F B×L B
M C＝F C×L C
M D＝F D×（L D＋A）
FX
［N］

MA
［N・m］

MB
［N・m］

MC
［N・m］

NEOKT-16

50

0.6

0.4

0.6

5

33

NEOKT-２０

120

1.5

1

1.5

10

42.5

Model

Load and
Moment

MD
［N・m］

A
［mm］

FX：Pressing Force, etc.
※For the example of attachment (jaw) design,
MA, MB, MC：Moments of inertial
see P.9
forces of jaw when opening, closing and swinging
MD：Moment of radial force of gear or pulley, etc.

☞

5

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Three-jaw Swivel Gripper

NEOKTSeries■Internal Structure Drawing
NEOKT Series
Internal Structure Drawing

Parts List
No.

Name

Material

No.

Name

Main Body

Aluminum Alloy

Stopper

Material
Stainless Steel

No.

Name

Material

Hexagon Socket Head Bolt Steel

Case

Aluminum Alloy

Guide Presser

Stainless SteelHexagon Socket Head Bolt Steel

Cylinder Tube

Stainless SteelSpacerAluminum Alloy

Plug

Piston Rod

Stainless SteelRadial Bearing

Steel

GasketSteel, NBR

MagnetRare Earth Magnet

Driving Pin

Carbon Tool Steel

Rod Packing

NBR

Pressure Cover

Aluminum Alloy

Positioning Pin

Carbon Tool Steel

Piston Packing

NBR

PistonAluminum Alloy

Positioning Pin

Carbon Tool Steel

Rotary seal

NBR

Fulcrum Pin

Carbon Tool SteelHexagon Socket Head Bolt Stainless SteelO RingNBR

Action Lever

Carbon SteelHexagon Socket Head Bolt Stainless Steel

Shim

KnuckleStainless SteelHexagon Socket Head Bolt Stainless Steel

Shaft Adapter

Linear Guide

Steel

Hexagon Socket Head Bolt Stainless SteelKey

Note 1)

Stainless SteelStainless SteelNote 2)

Note 1) φ16 only

Note 2)

Stainless SteelCarbon SteelNote 2) Shaft type only

6

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Gripping Point Limit Range

External Gripping State

Internal Gripping StateLNEOKT-16C

NEOKT-16C

0.7

0.7

0.6

0.6

Working Pressure

Working Pressure
MPa

0.5
0.4
0.3

MPa

0.2
0.1

0.5
0.4
0.3
0.2
0.1

0

20

40

60

80

0

20

40

Gripping Point

Gripping Point

NEOKT-20C

NEOKT-20C

0.7

0.7

0.6

0.6

Working Pressure

Working Pressure
MPa

Gripping Point Limit Range

L

NEOKT Series

Ensure that the gripping point (the position where the workpiece is gripped) L is within the "Gripping Point Limit
Range". If they exceed the limit range, an excessive moment will be applied to the guide part, causing
backlash and a bad influence on the life and accuracy.

0.5
0.4
0.3

MPa

0.2
0.1
0

60

80

0.5
0.4
0.3
0.2
0.1

30

60

Gripping Point

90

120

0

30

60

90

120

Gripping Point

7

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Three-jaw Swivel Gripper

NEOKTSeries
Effective Gripping Force
NEOKT Series

External Gripping State

Effective Gripping Force

35

Internal Gripping StateNEOKT-16C

NEOKT-16C
40

30

Gripping Force

Gripping Force

25
20
15
10

30

20

10

5

0

20

40

60

0

80

Gripping Point

NEOKT-20C

70

60

40

60

80

NEOKT-20C

60

50

Gripping Force

Gripping Force

40
30
20

50
40
30
20

20

0

20

Gripping Point

10

30

60

90

120

Gripping Point

0

30

60

90

120

Gripping Point※For details about attachment (jaw) mounting method, ☞ see P.11

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■Example of Attachment (Jaw) Design

Positioning in the Lever Opening/Closing Direction
The position in the opening/closing direction is determined by processing an elongate hole for the positioning
pin on the attachment (jaw) in the vertical direction, and fitting it to the positioning pin of the lever.

NEOKT Series

When you want to precisely position the attachment (jaw) or when you need mounting repeatability, thefollowing mounting methods are effective.

Positioning in the Lever Width Direction

Elongate Hole
(Positioning in the Opening/Closing Direction)
For Fixing Bolt
Through-hole
Pressing Side
(Vertical Positioning)

Fixing Bolt

Pressing Face
Lever

Positioning Pin

Lever Width Direction

Attachment (Jaw)

Example of Attachment (Jaw) Design/Attachment (Jaw) Mass

By making a projection on one side of the attachment (jaw) and pressing it against the side of the lever on
the reference line side, the position in the width direction can be determined.If there is concern about
position misalignment during operation, make projections on both sides of the attachment and fit them tothe lever.

Lever Opening/Closing Direction
Reference Line
Pressing Face

■Attachment (Jaw) Mass
Please make the attachment (jaw) mounted to the lever as small as possible.Also, make sure that themass of one jaw does not exceed that shown below.It shall be lighter when great acceleration or impact isapplied during workpiece conveyance.Noted that applying large inertial load to the lever may cause
breakage of internal parts.
Model

Mass [g]NEOKT-16

50

NEOKT-20100

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Three-jaw Swivel Gripper

NEOKTSeries■Main Body Mounting Method
NEOKT Series

Main Body Mounting Method 1
When the screw on the bottom face of the main body is used

Main Body Mounting Method

Model

Bolt to be Used

Maximum Tightening Torque [N・m]NEOKT-16

M5×0.8

2.84

NEOKT-20

M6×1.0

4.92

Main Body Mounting Method 2
When the screw on the side of the main body is used

Model

Bolt to be Used

Maximum Tightening Torque [N・m]NEOKT-16

M5×0.8

2.84

NEOKT-20

M6×1.0

4.92

10

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■Positioning When Mounting the Main Body

Positioning Boss

Model

Positioning Hole

Positioning BossNEOKT-16

depth 2.5
φ2.5＋0.03
00height 1.5
φ27－0.01

NEOKT-20

depth 4
φ4＋0.0300height 3
φ37－0.01■Attachment (Jaw) Mounting Method
When you mount the attachment (jaw), hold the attachment (jaw) with a spanner or the like to remove loadto the lever.

Model

Bolt to be Used

Maximum Tightening Torque [N・m]NEOKT-16

M3×0.5

1.14

NEOKT-20

M4×0.7

2.7

Positioning When Mounting the Main Body/Attachment (Jaw) Mounting Method

Positioning HoleNEOKT Series

If positioning and reproducibility is required when mounting the main body, use positioning hole orboss according to mounting method.

11

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Three-jaw Swivel Gripper

NEOKTSeries

１６

1: Shaft Type
2: Hole Type
３．
５

１６

When opened :13.４+0.7
０

28

38

６3

１５

4－M５×0.８
Depth ８2

7±0.02517

03－φ3－0.0３(Positioning Pin)2０

φ２.5＋0.03
0Depth ２.5
(Positioning Hole)

3－M3×0.5
Depth 4

When closed :0１0.3－０.６

4.5

5

φ48

（14.7）

6

21

３

16

２２

３５

２－M５×0.８(Closing Port)

２.5＋0.030Depth ２.5

３．
５

1.5

φ２２

２－M５×0.８(Opening Port)

2-Plug９.50
φ２７－0.01

１５ １０（ＮＥＯＫＴ― Ｃ）
Dimensions

4－M５×0.８
Depth 10

４２

17

4－
C1

34

Drive Shaft Connection Part

３４

42

６．
５

NEOKT Series（3.2）

NEOKT－16C－□

2.5＋0.030Depth 2.5

■Dimensions

3－120°

Two faces have an air port. Select the one you use according to the mounting condition.
For the hole type, 2 shaft fixing screws (M4× 6L) are attached.
The key is delivered as attachment.

Drive Shaft Connection Part9.2

0
φ8－０.０3

２－M4×0.7(For Shaft Fixing)（＊2
φ8+0.03+０.01
Depth 15

4

12

18

10

0
３－０.０
２５
(Key Size)＊３－1：Shaft Type

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■Dimensions

（3.2）

56

4－
C
2

NEOKT－20C－□

23

4－M6×156

19

4＋0.030Depth 446

Drive Shaft Connection Part
1: Shaft Type
2: Hole Type

5

Depth 10

NEOKT Series

46

19
28

0
φ3７－0.011

4＋0.030Depth 4

5

3

20

3

9±0.02503－φ4－0.0３

20(Positioning Pin)

25

When closed :0
１1.8－０.６

φ4＋0.030Depth 4
(Positioning Hole)

6 8

3－M4×0.7
Depth 7

φ64

（20）

When opened :16.9+1.0
０

47

35

26.5

8

3

8

81

22

18 13

46

２－M５×0.８(Closing Port)

4－M6×1
Depth 1012

φ28

２－M５×0.８(Opening Port)

2-Plug（ＮＥＯＫＴ― Ｃ）
Dimensions

φ5.2 thru

５０3－120°
Two faces have an air port. Select the one you use according to the mounting condition.
For the hole type, 2 shaft fixing screws (M4× 6L) are attached.
The key is delivered as attachment.

Drive Shaft Connection Part9.2

0
φ8－０.０3

4.5

12－1：Shaft Type

18

10

0
３－０.０
２５
(Key Size)＊３

２－M4×0.7(For Shaft Fixing)（＊2
φ8+0.03+０.01
深19－２：Hole Type13

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Three-jaw Swivel Gripper

NEOKTSeries■Rotational Runout Accuracy
NEOKT SeriesA

B

Rotational Runout Accuracy/Lubrication/Rotary Seal Replacement

Rotation misalignment of lever pin center B relative to positioning boss center A : ± 0.05mm■Lubrication
Although the swivel joint is coated with lubricant, operation may become less smooth depending on therotational speed, usage conditions and ambient environment, so it is recommended to fill lubricant regularly.If
it is used in that condition, the wear of the sliding part will increase, which may result in a shorter life.
The grease supplying period varies depending on usage conditions and ambient environment, but the total
number of rotations 2 million is generally used as a
guide.The swivel joint can be disassembled afterShimremoving the hexagon socket head bolt shown in the
figure.After disassembly, apply lithium soap basegrease after wiping off old grease of the rotary seal
inside the case.During disassembly, be careful toHexagon Socket
avoid loss of internal part (shim).
Head Bolt
In case of difficult disassembly, it is also possible tofill from the air port.Turbine oil (ISO, VG32) can also
be used.

■Rotary Seal Replacement
After disassembly, the rotary seal installed inside the case can be replaced.
The rotary seals are installed at the 3 locations shown in the figure below. After removing the rotary seals witha flat-blade screwdriver with no sharp tip, install new rotary seals with grease evenly applied to the housing.
When installing, make sure that the rotary seals are free from dust and that they are not twisted or cut.
When reassembling, apply grease to the outer peripheral surface of the main body assy and the innersurface of the case.
(After installing the main body assy in the case, wipe off any excess grease.)
Rotary seal

Applying Grease

Applying Grease

Case

14

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［mm］
Bore Size

φ16

A

6.6

9

B

13

18.5

φ20

NEOKT Series■Switch Mounting
Groove Dimensions■Switch Response Difference ■Switch Protrusion Distance ■Switch Mounting

Protrusion

The maximum protrusion (when thelever is fully closed) of switch from theend face of the main body is asfollows.Please use it as a guide formounting.

Response
Difference

Insert the switch into the switch
mounting groove. After setting themounting position, tighten the switch
fixing screw with a precision
screwdriver. The tightening torqueshall be 0.1 N・m or less.

Switch Fixing Screw

SwitchMounting
GrooveSwitch Operation
Position (ON)
Switch Operation
Position (OFF)［mm］

Bore Size

φ16

φ20

Maximum Response Difference

0.4

0.4

Maximum Protrusion00

Switch■Switch Mounting Position Adjustment
For external gripping①Check the workpiece external
gripping and fully-closed state.

②Insert the switch into theswitch mounting groove of
the main body in the arrow
direction.

③The LED lamp lights up by
inserting the switch further
in the arrow direction.

④Fix the switch at the position
where the switch is moved 0.6
mm in the arrow direction fromthe position where the lamp
lights up in ③.

For internal gripping①Check the workpiece internal ②Insert the switch into the switch ③The LED lamp lights up ④Fix the switch at the position where
gripping and fully-opened state.
mounting groove of the mainby inserting the switch
the switch is moved 0.6 mmbody in the arrow direction.
further in the arrow
further from the position where thedirection. It turns off by
LED lamp lights up when themovingitfurther.
switch is returned in the arrowNote) ① indicates the position where you need to checkdirection at the position in ③.
if the switch is ON. Adjust and mount the switch in
the order from ① to ④.

NEOKT_201906-C.indd 15

Switch Mounting Groove Dimensions / Switch Response Difference / Switch Protrusion Distance/ Switch Mounting / Switch
Mounting Position Adjustment

Refers to the distance from the position
where the levers move and the switch
turns on to the position where thelevers move in the reverse direction
and the switch turns off.

15

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Position Detection Switch

ZE Type (Solid State)■Specifications
ZE135

ZE155

ZE235

ZE255

2-Wire System

3-Wire System

2-Wire System

3-Wire System

Model

Item

Wiring Method

Straight Type

Lead Wire Leading Direction

L-shaped̶DC4.5～28V

̶

DC4.5～28V

Load Voltage

DC10～28V

DC4.5～28V

DC10～28V

DC4.5～28V

Load Current

4～20mA（At 25℃；10mA at 60℃）

50mA MAX.

4～20mA（At 25℃；10mA at 60℃）

50mA MAX.

̶

10mA MAX.
（DC24V）

̶

10mA MAX.
（DC24V）

4.5V MAX.

0.5V MAX.(However, 20 mA at the voltage of 10V or less)

4.5V MAX.

0.5V MAX.(However, 20 mA at the voltage of 10V or less)Power Supply Voltage

Consumption Current at ON
Internal Drop Voltage Note 1)

1mA MAX.（DC24V、25℃） 50μA MAX.
（DC24V）（DC24V） 1mA MAX.（DC24V、25℃） 50μA MAX.

Leakage Current

Position Detection Switch

1ms MAX.

Delay Time
Insulation Resistance Note 2)

100MΩ MIN. (Between case and lead wire terminal at DC 500V Mega)

Withstand Voltage Note 2)

AC500V（50/60Hz）1 minute (Between case and lead wire terminal)

Shock Resistance

294m/s2｛30.0G｝(Non-repetitive)

Vibration Resistance

Double amplitude 1.5mm・10～55Hz｛88.3m/s2（9.0G）｝

Protective Structure

IEC IP67、
JIS C0920 (Watertight type)Red
LED indicator illuminates at ON

Operation Indicator

PCCV0.15SQ×2 cores (brown, blue)×ℓNote 3) PCCV0.15SQ×3 cores (brown, blue, black)×ℓNote 3) PCCV0.15SQ×2 cores (brown, blue)×ℓNote 3) PCCV0.15SQ×3 cores (brown, blue, black)×ℓNote 3)

Lead Wire Note 3)
Operating Temperature Range

0～60℃

Storage Temperature Range－10～70℃
15g (When the lead wire length A is 1 m), 35g (When the lead wire length B is 3 m)

Mass

ZE Type (Solid State)

Note 1): The internal drop voltage changes depending on the load current. Note 2): As per our test standards. Note 3): Lead wire length L: A: 1 m, B: 3 m■Internal Circuit
ZE135・ZE235
Indicator LED

ZE155・ZE255
Brown
（＋）

Indicator LED
Load

Diode (For protection against reverse connection)
Brown
（＋）
Black

SwitchMain Circuit

ＤＣ10～28Ｖ

SwitchMain Circuit

ＤＣ4.5～28Ｖ

Blue (External（－） Connection)(Switch)LoadBlue (External（－） Connection)(Switch)Zener Diode(For measure against surge)

Zener Diode(For measure against surge)■Outside Dimensions ［mm］
Ｍ2.5 Set Screw
Indicator

ZE235・ZE255

Ｍ2.5

（8）
60±10

4

ZE135・ZE155

Set Screw

4.6

L

4

Indicator

φ2.6

φ2.6

Maximum
Sensitivity Position

（8）
60±10

6

11.5

L
4.6

15.5

6
15

Maximum
Sensitivity Position

16

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■Precautions in Switch Handling■Solid State
SwitchConnection

Connection
with Relay

3-Wire System Solid StateThe next connection examples show
only for the 3-wire system solid state.

★Connection with TTL
Brown
Switch

Brown
Load

DC10
～28V

Blue

（＋）

Black

Separated Connection

Blue

Switch（－）

Blue

Black Brown

CR

SwitchBlue

DC4.5～28V
Vcc

（＋）

DC10
～28V

Load

（－） （＋）

Brown

CR

SwitchBrown
Switch

Black
Blue

（－）
Relay

SwitchSerial (ANDConnection
Parallel (OR)
Connection

Relay

SwitchRelay

SwitchRelay

SwitchRelay Contact

Switch

Black
Blue

Load

Relay Contact

Relay Contact

Load

（＋）

（－）
SwitchSwitchBlue★Connection with C-MOS

Load

Brown

Brown

Connection
withSequencer

Vcc

Relay

Relay Contact

Load

Connection
with Solenoid
Valve

Direct Connection
Brown

Relay

SwitchSwitchPrecautions in Switch Handling

Basic
Connection

2-Wire System Solid State

Position Detection Switch

1. Pay attention to the lead wire color when connecting them. Wrong connection may result in malfunction
or breakage.
2. Do not connect 2-wire system solid state sensor switches to TTL and C-MOS.
3. Use of a protection diode for surge is recommended for inductive load such as an electromagnetic relay.
4. Do not connect the sensor switches in series (no AND connection) because the circuit voltage isdropped in direct proportion to the number of sensor switches.
5. When the sensor switches are connected in parallel (OR connection), sensor outputs (e.g. black wires)can be directly connected. In this case, however, be careful not to cause a load restoration failure
because leakage current increases in direct proportion to the number of sensors.
6. The sensor switches are magnetic induction type switches. Therefore, do not use them in places with astrong external magnetic field and do not get them closer to the great current such as a power line. Do
not use a magnetic body for the mounting member.Doing so may result in malfunction.
7. Do not put a force to the lead wires such as by pulling the lead wire or bending it extremely.
8. Do not use the switches in an environment that is exposed to chemicals or gases.
9. The switch tightening torque shall be 0.1 N・m or less when the switch is fixed.

Programmable
Controller
Input Terminal
（＋）
COM

（＋）

Black
Blue

Brown
Switch

Black
Blue

Brown
SwitchVcc（－）
Black Brown Blue
SwitchBlue

Programmable
Controller
Input Terminal
（＋）
COM

17

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Technical Data

Gripper Selection Guide
Precautions for Selection(1) Safety Measures
If the movable parts of the workpiece and gripper may cause damage to the human body or mechanicalequipment during operation, take safety measures such as installing a protective cover.
In addition, if using a pneumatic gripper, see also the common precautions of pneumatic equipment.

(2) Gripping Force and Workpiece Mass
The gripping force varies depending on the type of action (single acting type or double acting type) andworking pressure.It also relates to the material, shape, surface roughness and movement speed, etc. of
the workpiece to be gripped. As a general guide, select a gripper that has a gripping force of 10 to 20
times or more the workpiece weight.
In addition, it shall be greater than that when great acceleration or impact is applied during workpiece
conveyance.
Selection of an unsuitable model may cause workpiece falling, etc.

(3) Gripping Point Limit Range
Ensure that the gripping point (the position where the workpiece is gripped) L is within the "Gripping
Point Limit Range".If they exceed the limit range, an excessive moment will be applied to the guide part,causing backlash and a bad influence on the life and accuracy.

Gripper Selection Guide(4) Attachment (Jaw) Design
The attachment shall be designed to be as light and short as possible.
If the attachment is long and heavy, the bending moment applied to the finger part and the inertial force
at the time of gripping will become too large, causing increased backlash or damage.

(5) Opening/Closing Stroke
Select a model that has a margin in gripper opening/closing and stroke relative to workpiece.If there isno margin, gripping may become unstable due to the variation of gripper opening/closing width andworkpiece diameter.
When a detection switch is used, it may cause detection failures.

(6) Mounting
When mounting the attachment to the finger part, do not twist the finger part.Twisting may cause
backlash or reduced accuracy.
Also, adjust and check so that no external force is applied when opening/closing the finger part.When
moving the gripper or opening/closing the finger part, collision of the workpiece or attachment with otherobjects may cause backlash or damage.When mounting the gripper body, prevent scratches or dents
due to the gripper falling or collision.

(7) Opening/Closing Speed
If the opening/closing speed of the finger part is too high, the inertia of the finger part and attachment
may cause backlash or damage.
Install a speed control valve to prevent impact.

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Actuator Precaution ①
Please read the following instructions before use.

DesignWARNING◆Abnormal action
Actuators may cause a kind of impact when force change
occurs due to rattle in the sliding part of a machine.In thiscase, actuators may result in bodily damage (e.g. hands
or legs being caught) or machine damage. Therefore,
adjust actuators for smooth mechanical movement anddesign them to prevent bodily damage.

◆Protective cover
When there is a risk that a system or a product is harmful tohuman body during operation, install a protective cover.

◆Impact relaxation
When the driven object moves at a high speed or its
mass is large, it is difficult to absorb impact using thecushion of the cylinder only. Therefore, install a circuit
to reduce the speed before going to the cushion torelease impact.In this case, consider the rigidity of themechanical system fully.

◆Power source failures and supply pressure drop

◆Jumping prevention circuit
When the cylinder is driven by the exhaust center typedirectional control valve or one side of the piston isp re s s e d u n d e r t h e c o n d i t i o n t h a t a i r h a s b e e nexhausted from the cylinder (such as when starting
after the residual pressure has been exhausted fromthe circuit), driven objects will jump out at a highspeed. Such situation may be harmful to the humanbody (e.g. hands or legs getting caught) or machine
damage. Therefore, select equipment and design
circuits to prevent driven objects from jumping.

◆Emergency stop, abnormal stop
Design actuators so that their motions do not damage
human bodies or equipment even in case of emergency/
abnormal stop of the system or when the system isre-started after stop.

Selection

WARNING

When the 3-position closed center type directional control
valve is used to stop the cylinder piston in the intermediate
position, it cannot stop it correctly and accurately because
it uses not hydraulic pressure but compressed air.
Also, it is not assured that valves and cylinders leak no air.
Therefore, pistons may not be able to stop for a long time.
Consult us if you need to realize long time stop position
retention.

Mounting

WARNING◆Locking in mounting
Product fixing bolts and attachment/jig mounting bolts
must have a locking. Mount bases must have a structure toprevent deformation and breakage due to thrust force orinertia force at stopping.

CAUTION◆Precautions in operating
Do not use the product until it is confirmed that equipment
operate properly.
After mounting, repair or modification, connect compressed
air and power and conduct appropriate functional tests andleak inspection to check if the mounting is appropriate.

◆Equipment operation check
After mounting the product to the system, do not start thesystem immediately but check if the product has been
properly mounted for safety.

◆Product handling①
Actuator Precaution

If the power source (e.g. electric, pneumatic pressure,hydraulic source) has a failure or the air pressure drops
due to troubles, cylinder power will drop, thus leading
to load decrease. Take measures to prevent damage tohuman bodies and equipment.

◆Intermediate stop

Dropping or hitting the product or pinching the productwith a tool will result in product deformation, thus causing
accuracy deterioration and operational failure.

◆Speed adjustment
Adjust the cylinder drive speed gradually to the specified
speed with a speed controller from the low speed side.

◆Precautions in magnetic products
Bringing magnetic products such as a magnetic disk, amagnetic guard and a magnetic tape close to the built-in
switch sensing magnet type may result in data erase.
Also, do not bring them close to any equipment that may
cause malfunction due to magnetism.

◆Operating pressure range
If the system is used with the maximum working pressure or
above, each part will be worn or damaged, thus resulting in
breakage or operation failures. If the system is used with theminimum working pressure or less, the specified thrust force
cannot be generated, thus causing malfunctions such as
failure to move smoothly. Therefore, use products within thespecified operating pressure range.
(See the specifications.)

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Actuator Precaution ②
Please read the following instructions before use.

PipingUsage environment

CAUTION◆Seal tape winding
When you screw in pipes and joints, be careful not tomake piping screw chips and sealing materials enter into
the inside of the pipes.
When you use a seal tape, wind a screw with the tape sothat 1.5 to 2 turns of the screw head is not winded.

Lubrication

CAUTION◆Use in lubrication circuit
If the system needs lubricating, use additive-free turbine
oil class 1 ISO VG32 or ISO VG46. Do not use machine oiland spindle oil because they will damage packings, thus
causing operation failures. Do not stop lubricating in the
middle of lubricating because doing so will cause flowoutof lubrication grease, thus accelerating damage ofpackings and other parts, resulting in operation failures.

Air source②
Actuator Precaution

CAUTION◆Quality of compressed airCompressed air containing drain (e.g. dust, water, salt,
degraded compressor oil, oil carbon particles) andcorrosive gas will damage packings and other parts, thus
causing operation failures and damages. Therefore, useclean compressed air.

◆Drain removal measure
Compressed air containing a large amount of drain not only
causes operation failures of the air compressor but also
causes environmental contamination. Install equipment
such as an after-cooler, an air dryer and an air filter (nominal
filtration rating: 50μm or less).
The air cleaning system to drive actuators is recommendedin JPAS005 "Guidelines for Use and Selection of Pneumatic
Cylinders".

◆Temperature of compressed air
Hot compressed air will accelerate damage of packingsand other parts.
Even when the environmental temperature is within thespecified range, heat may transmit through jigs
connected to the actuator and driven objects. When theenvironmental temperature is low, drain and moisture will
become solidified or frozen, thus resulting in damaged
packings and parts and operation failures. Therefore,
measures to prevent freezing must be taken.

WARNING◆Outdoor use
Do not use the product in places where the product isdirectly or indirectly exposed to wind and rain, is exposed
to direct sunlight, or any outdoor place where the productis influenced by temperature or any other factors because
this product is not resistant to weather.

◆Use in the corrosive environment
Do not use the product in water or places where theproduct is exposed to salt water, acid, alkaline fluid
splash, iron powder or in their gases or moisture vapors.

◆Cover installation
Attachment of dust, water, oil, chips, iron powder, or spatterto the rod and the sliding parts will result in damaged shafts
and packings, thus causing air leak and operation failures.
Install a cover to prevent them from attaching.

◆Operating temperature range
Use with a temperature exceeding the maximum operating
temperature will result in deterioration acceleration such as
hardening of packings, thus causing operation failures. Even
when the environmental temperature is within the specified
range, heat may transmit through jigs and driven objects. Whenthe product is working at a high speed, its sliding surfaces will
locally overheat, thus causing similar problems, freezing due toadiabatic expansion or surface dew condensation.
When the temperature is lower than the minimum operating
temperature, drain and moisture will become solidified orfrozen, thus resulting in damaged packings and operation
failures. Therefore, measures to prevent freezing must be taken.

Maintenance and check

WARNING◆Removing equipment, and supplying and exhausting compressed air
Before removing equipment, make sure that driven object
fall prevention measures and runaway prevention measures
have been taken, cut off supply air, turn off the power of theequipment and exhaust compressed air from the system.
Before re-starting the equipment, make sure that the jumping
prevention measures have been taken and do it carefully.

CAUTION◆Draining air filter
Operating the equipment without maintaining or draining
the air dryer and the air filter will result in life shortening or
equipment failures. Drain tends to increase in summer inparticular, so drain them frequently in summer. Use of a
type with an auto drain function is recommended.

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Switch Precaution ①
Please read the following instructions before use.

Design and selection

Mounting and adjustment

WARNING◆Specification check
Please read the specifications carefully because use of aload current, voltage, temperature or impact outside of
the specified range will result in equipment breakage or
operation failures.

◆Contact protection circuit (measure against surge voltage)
When an induction load such as a relay or a solenoid isconnected, surge voltage is generated. In this case,therefore, install a contact protection circuit.
See “Switch Connection Method” for details.

◆Actuator installation interval
Switches are operated by a magnet built in the actuator.
Therefore, if two products get close to each other, theirmagnets may interfere with each other, thus causing
malfunction.

◆Leakage current◆Serial connection
When switches with an indicator are connected in series,
voltage drop occurs due to the internal resistance of lightemitting diodes, etc. (When n switches are connected,
the voltage drop is n times.）
In this case, the load may not operate even when theswitches are normally operated.

◆Switch wiring length
When the switch wiring is long, excessive current flows into
the contact due to the incoming current when the switch isturned ON. Thus, the switch may remain ON. When the wire
length is longer than 10 m, install a cable surge absorbing
circuit. See “Switch Connection Method” for details.

◆Detection in the middle of a stroke
Note that when a switch is provided in the middle of a
stroke, the switch operates when the piston speed is toohigh but the load may not be operated. In this case,decrease the speed or install an electric hold circuit.

◆Interlock
When a switch is used for systems such as an interlock,design it in consideration of failures and malfunctions.

◆Securing the maintenance space
Secure the space for operations such as switch adjustment
and indicator check.

◆Switch handling
Impact to a switch such as by falling may result inbreakage of the inside of the switch.

◆Lead wire handling
Excess tensile force on a lead wire may result in lead wire
breakage in the cable or breakage of the inside of a switch.

◆Switch fixing tightening torque
Tightening the switch fixing screw or mounting bracket
with a torque larger than the specified torque may resultin switch breakage. Insufficient torque may result in out of
mounting position in use. Follow the specified tightening
torque for each switch.

◆Switch setting position
Adjust the switch mounting position so that the piston
stops in the center of the operation range (ON range).
(The mounting position specified in the catalogue shows
the optimal position in the stroke end.) When it is set in theend of the operation range (around the ON/OFF borderline), operation may be unstable.

WiringWARNING◆Lead wire wiring
To install a switch in the movable area, take some wiring
measures such as allowing extra cable length andreplaceable cables. When wire is bundled with air pipes bya spiral tube, unreasonable force may be applied to thewires. Therefore, allow extra length of wires in this case.

①
Switch Precaution<Solid State>
For the 2-wire system solid state auto switch, currents(leakage currents) flow to the load to activate the internal
circuit even when they are OFF.
When the leakage current is lower than the load operation
current (input off current of the controller), restoration
failure occurs (ON state remains). If such switch cannot
meet the specification, use a 3-wire system switch. Whenswitches (n switches) are connected in parallel, themagnitude of the current flown to the load will be n times.

WARNING◆Load connection
Operating a 2-wire system switch while connecting it
directly to the power without connecting any load such asa relay and a sequence controller may result in instantovercurrent, thus resulting in switch breakage.

◆Short-circuit of load
Operating a switch with a short-circuited load will cause
the flow of overcurrent, thus resulting in switch breakage.

◆Polarity
In case of DC, wires have polarity. Brown lead wires are (+)
and blue lead wires are (-). When wires are connected
reversely in the contact switch, the switch operates but thelight-emitting diode does not illuminate.
When wires are connected reversely in the solid stateswitch, the switch does not operate and the internal circuit
may be broken.
When the power wire (brown) and the output wire (black)are connected reversely in the 3-wire system switch, theswitch will be broken.

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Switch Precaution ②
Please read the following instructions before use.

Usage environment

Maintenance and check

DANGERWARNING◆Use in the hazardous atmosphere
Do not use switches in the explosive gas atmosphere.
Switches do not have an explosion-proof structure. Do
not use them in the explosive gas atmosphere because
doing so may result in explosion.

WARNING◆Use in a powerful magnetic field
Use of a switch in a powerful magnetic field will result inswitch operation failure and malfunctions because theinternal magnetic force and the magnetic field distributionchange.

◆Screw and hardware looseness check
Looseness of a switch mounting screw and hardware will
result in switch displacement, thus causing unstable
operation and malfunction. After setting the position
again, tighten them with a specified torque.

◆Lead wire breakage check
Damaged lead wire coating may result in insulation failure
or breakage. Replace the switch or repair the lead wire
immediately.

◆Adjacent of magnetic body
Note that when there is a large amount of iron power (e.g.
chips, welding spatters) accumulated around the switch
cylinder or magnetic bodies (attracted to the magnet) areadjacent to the switch cylinder, the magnetic force inside
the cylinder is deprived so the switch may not operate.

②
Switch Precaution◆Usage environment
The water proof property of the switch is applicable to the
IEC Standard IP66 (JIS C0920 Water Proof Type).
However, if they are constantly exposed to water,
insulation failure may occur. When they are exposed to oil(e.g. cutting oil) or chemical or in such atmosphere, leadwire hardening or insulation failure may occur.

◆Impact
If excessive impact is applied to a contact switch in use,the contact may cause malfunction. Such failures will be
reduced by using no-contact switches, but you must
check the impact-resistant values in the specifications
before doing so.

◆Surge generating places <Solid State>
When there is a large surge generating system (e.g.
electromagnetic lifter, high-frequency induction furnace,
motor) in the periphery of the cylinder with a no-contact
switch, circuit elements inside the switch may deteriorate
or break. Therefore, take measures against the surge(source of generation) and pay attention to confusion withother lines.

◆Temperature change
Even when switches are used within the specified use
temperature, extreme environmental temperaturechanges may have a bad influence on the parts inside
the switch.

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Guide to Our Website
http://www.newera.co.jp/en/pneumatic/index.html
Check the latest New-Era information including new products
Download CAD data
Request catalogs and information materials

Please refer to the above website for
the CAD data download procedure.

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RoH

http://www.newera.co.jp/en/pneumatic/index.html
pneumatic@newera.co.jp★Design and specifications subject to change without notice.★Copyright ○c 2018NEOKT_201906-C.indd 4

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2019-09-03 16:19:26