Panel Lifting Clamp for Housing
PTC100, PTC200,
PSC100, PTC250,
PTC150Operation ManualThis operation manual explains the basic
operation and handling of the clamps.
Please read this manual carefully before
use and observe the precautions for safe
operation.
SUPER TOOL CO., LTD.

brand panel lifting clamps are energy-saving lifting
equipment which have been developed for the purpose oftransportation of panel and beams.

Proper use
Operate lifting clamps after carefully reading and understanding
this instruction manual for enhancing efficiency and safety ofoperation.

Prime efficiency and economy
Advanced functions, reasonableness and versatile applicationsof finely and carefully designed
prime efficiency and economy.

lifting clamps ensureSpecial considerations on safety
We conduct a pulling test with a load three times (or twice) of rated
capacity and a manufacturing serial number is marked on eachproduct, thus directing a special attention to safety.

1Precautions for safety operation
Be sure to read this instruction manual carefully
before use.

Mistaken use of lifting clamp may cause a danger such as dropping ofload.
Education of “crane safety regulations,” “operation manual for lifting
clamp,” “your company’s operation standards,” etc. should be given
before actual operation not only to business owners who havepurchased clamps but also to their operators to ensure that actual operators have acquired enough knowledge, safety information, andprecautions of the clamps.
Safety precautions are divided into two classifications in this manual;“Warning” and “Caution,”.
Indicates a potentially hazardous situation

WARNING: which, if not avoided, could result in death orserious injury.

CAUTION:

Indicates a potentially hazardous situation
which, if not avoided, could result in medium
damage or slight injury, or could result in property damage.

While only mentioned in CAUTION, failure to comply with them still
may lead to a serious disaster. As such, do not fail to pay attention bothto WARNING and CAUTION which are of great importance.

Meanings of Signs
The signs ofandindicate that precautions should be taken.
The contents of warning or caution are described at each sign.
The sign ofindicates prohibited actions.
The sign of
Two point lift forindicates that an action is enforced or instructed.
righthand figure.

※ After reading this manual, make sure to keep it at a place of easy accessby any users.

2

1. Handling in general
WARNING● Do not operate until the contents of the operation manual,and caution tag/plate are thoroughly read and understood.

● Do not operate without a legal qualification.

● Be sure to clear of the area of the operation for lifting or

turning a load against possible drop off or fall over.
● Do not use for other than intended purpose.

Prohibited● Make sure to execute an inspection periodically and before

each operation.

Instructed

2. Check before operation
WARNING● Do not use clamp unsuitable for the operation method.
● Do

not use clamp of an abnormal condition; deformed,
cracked, worn, malfunctioning, etc.
● If the load is under the following conditions, do not use clamp.
(A material of fragile, high-hardness, low-hardness orextremely low-hardness, or a member with the gripping parttapered down more than 8°)

Prohibited● Check the type, rated capacity, clamp range, and “periodic

inspection completed” label displayed on clamp body.

● The load to be lifted shall be within an allowable range of

rated capacity of clamp.

● Thickness of load shall be within designated clamping range.

Instructed

CAUTION● Do not use clamp for the load under the following conditions.

(Load to be lifted is more than 150℃, or in an atmosphere or
solution of acid or alkaline chemicals less than minus 20℃)

Prohibited● Sling to be used for the clamp shall be an appropriate one forlifting operation.

Instructed3

3. Lifting operation
WARNING● Do not use clamp, lifting at one point.

(excluding special or custom ordered products)● Do not use the clamp in the following ways of lifting: lifting of

two or more individual objects at one time. (overlapped loads,
padded load etc. , or side gripping)● Do not use the clamp for pulling out steel plate sheet from thesteel sheet pile or for vertical lifting of the sheet.
● Do not use the clamp when strong wind may threaten to cause
any danger.
● Do not use the clamp for a hydraulic shovel.

Prohibited● Install two or more clamps in a balanced way to keep thebalance of load.

Two point lift

● The lifting angle of the clamps and the dividing angle should be

kept within the allowable angles according to types.
Load should be inserted to the innermost end of the jaw opening.
● When you use the clamp with a lock mechanism, never fail tohave the lock engaged.

Instructed

CAUTION● If oil, paint, scale, rust, etc. are on the gripping pad, do not use

the clamp.

● Do not drop clamp or drag on the ground.

Prohibited

4. Operation of a crane
WARNING● Never lift a load exceeding the rated capacity.
● Do not operate a crane in such a way as to give an impact tothe load or the clamp.

● Do not allow a person to stand on the load or to carry him.
● Do not lift a load which is not free from any other objects.
● Do not release the lock of clamp while lifting load.
● Avoid unintended contact by load to an adjacent member or tothe clamp, which has been removed from the load.

4

Prohibited

● Stop the lifting operation by crane for a moment when theload is applied to the lifting ring for safety checking. (depth ofthe load into the clamp opening; status of locking).
● Stop the operation of the crane just before the load reaches
the ground, and check the following matters: (Inclination or
falling over of the load and security around the landing areaof the load)

Instructed

CAUTION● Do not operate the crane in such a way as to drag the load

along the ground.

● Do not leave the crane (or winder, etc.) unattended from an

operating position while keeping the load lifted with the clamp.

Prohibited● Raising and lowering operation by crane should be done slowly

and carefully.

Instructed

5. Maintenance, storage and alteration
WARNING● Never alter the clamp and its accessories.
● Do not apply welding or heat to the clamp or its accessories.
● Do not use any other parts than our company’s genuine parts.
● Clamps which require the repair should be stored at a differ-ent place so that they are not used mistakenly.

Prohibited● Personswith specialized knowledge designated by thebusiness owner are to conduct maintenance and repairing work.
● When any abnormality with the clamp is found, do not use it
and immediately repair or dispose.
● Remove, if any, paint or mud sticking to the moving parts ofthe clamp, cams, and pads.

Instructed

CAUTION● Conduct maintenance and repairing without any load attached.
● Conduct maintenance and repairing after posting a sign

indicating that you’re on the maintenance work.

● Never fail to lubricate oil on the rotating parts of the clamp(around the pins), guide grooves, sliding parts, etc.
● Be sure to store clamps indoor.

Instructed5

■ Uses
Clamps suitable for lifting, transportation, and construction work ofpanels for housing.
Item No.

Uses

PTC100This unit is optimal for lifting, movement, construction work forsiding boards, external-wall panels, mold forms, insulatingexternal-wall materials, wooden panels, etc. Do not use forlifting ALC panels or extruded molding plates. Not for use on
various concrete products, tile panels, glass panels, stone
panels, metal panels, etc.

PSC100Can be used for various interior and exterior panels. Note thatcollapsible (fragile) panels that do not contain aggregate(reinforcing steel) or other materials cannot be used. Not for use
on various concrete products, tile panels, glass panels, stone
panels, metal panels, etc.

PTC150
PTC200This unit is optimal for lifting, movement, construction work forpanels for two-by-four construction method and beams forwooden housing. Do not use for lifting ALC panels or extruded
cement panels. Not for use on various concrete products, tilepanels, glass panels, stone panels, metal panels, etc.

PTC250This unit is optimal for lifting, movement, construction work forpanels for two-by-four or two-by-six construction method andbeams for wooden housing. Do not use for lifting ALC panels or
extruded cement panels. Not for use on various concrete
products, tile panels, glass panels, stone panels, metal panels,etc.

■ Features

6

1. Compact, light-weight, and easy to use.
2. In proportion to lifting load, fastening strength increases, clamping theload securely.
3. The clamping range is wide, and it is adjustable with an adjustment
plate pin.
4. Because of the spikes attached on the movable pads (panel-clampedpart), there occurs no slipping between the panel and the clamp,
ensuring safety execution.
5. Polyurethane rubber is used for the fixed pad, so the front side of thepanel is not susceptible to bruise.
6. Working efficiency can be enhanced as the fastening lock can be
unlocked by remote operation.

■ Specifications
Item No.

Rated Capacity

Clamp Range

Net Weight5-stage adjustment type

PTC100100kg① 5〜 20mm② 20〜 35mm
③ 35〜 50mm
④ 50〜 65mm
⑤ 65〜 80mm

1.8kg

2-stage adjustment type

PSC100100kg① 0〜 20mm② 20〜 40mm

3.5kg

4-stage adjustment type

PTC150150kg① 60〜 80mm
② 80〜100mm③100〜120mm④120〜140mm

3.6kg

5-stage adjustment type

PTC200200kg① 35〜 55mm
② 55〜 75mm
③ 75〜 95mm
④ 95〜115mm⑤115〜135mm

4.0kg

5-stage adjustment type

PTC250250kg① 80〜100mm②100〜120mm③120〜140mm④140〜160mm⑤160〜180mm

5.8kg

7

■ REPLACEMENT PARTS AND ASSEMBLIES

Clamp
Range
(Unit：mm)
Part No.

Part Name
Shackle Assembly1

Shackle18

Hex. Hole Head Bolt

16

U-nut
Lock Lever Link Assembly

2

11・24

Part No.

PTH
PTCH
PTCN
PTF

Part Name
Movable Pad Assembly

1

4

1

9・23

1

15

1

Item No. Q'ty (pc)
PTE

Movable Pad

PTCE

1

Spike, Nut

PTCG

5

Hex. Hole Disc Bolt

PTCM

4

Fixed Pad Assembly

PTR

Lock Lever Link

1

5

Fixed Pad

PTCR

1Spring (large/small)

1

6

Fixed Pad Mounting Bracket

PTCQ

1

1

15

Hex. Hole Disc Bolt

PTCM

4

3

19

Hex. Hole Head Bolt

PTCF

12

Handgrip Link (with key ring)

14

Spring Pin

13

Hex. Hole Head Bolt

PTCA

2

16

U-nut

20

Hex. Hole Head Bolt

PTCD

2

8

Arm

PTCJ

21

Straight Pin

PTCP

1

10

Adjustment Plate Pin

PTCK

1

22

Spring Washer

PTCY

2

Rope

PTCU

1

3

Cam

18

Hex. Hole Head Bolt

16

U-nut

21

Straight Pin

Cam Assembly

When ordering, add 100 after Item No.

8

Item No. Q'ty (pc)

PTCN
PTCP

1
1
1

⑦ is the main body and not for sale.

PTT
PTCT

PTCV

Individual parts available

1
1

Part No.

1

11・24

1

12

Part Name

Item No. Q'ty (pc)

Spring (large/small)

PTCS

1

Handgrip Link (with key ring)

PTCL

1

ClampRange(Unit：mm)
Part No.

Part Name
Shackle Assembly1

Shackle17

Hex. Hole Head Bolt

16

U-nut
Lock Lever Link Assembly

2

11・23

Item No. Q'ty (pc)Part No.

PTH
PTCH
PTCN
PTF

Part Name
Movable Pad Assembly

1

4

1

9・22

1

15

1

Item No. Q'ty (pc)
PTE

Movable Pad

PTCE

1

Spike, Nut

PTCG

5

Hex. Hole Disc Bolt

PTCM

4

Fixed Pad Assembly

PTR

Lock Lever Link

1

5

Fixed Pad

PTCR

1Spring (large/small)

1

6

Fixed Pad Mounting Bracket

PTCQ

1

1

15

Hex. Hole Disc Bolt

PTCM

4

3

18

Hex. Hole Head Bolt

PTCF

12

Handgrip Link (with key ring)

14

Spring Pin

13

Hex. Hole Head Bolt

PTCA

2

16

U-nut

19

Hex. Hole Head Bolt

PTCD

2

8

Arm

PTCJ

20

Spring Washer

PTCY

2

10

Adjustment Plate Pin

PTCK

1

21

Straight Pin

PTCP

1

Rope

PTCU

1

3

Cam

17

Hex. Hole Head Bolt

16

U-nut

21

Straight Pin

Cam Assembly

PTCN
PTCP

1
1
1

⑦ is the main body and not for sale.

PTT
PTCT

PTCV

Individual parts available

1
1

Part No.

1

11・24

1

12

Part Name

Item No. Q'ty (pc)

Spring (large/small)

PTCS

1

Handgrip Link (with key ring)

PTCL

1

All parts except No. 8 Arm are common to PTC150.

9

163

Clamp
Range

(Unit：mm)
Part Name

Part No.

Shackle Assembly1

Shackle18

Hex. Hole Head Bolt

16

U-nut
Lock Lever Link Assembly

2

11・24

Item No. Q'ty (pc)Part No.

PTH
PTCH
PTCN
PTF

Part Name
Movable Pad Assembly

1

4

1

9・23

1

15

1

PTE

Movable Pad

PTCE

1

Spike, Nut

PTCG

5

Hex. Hole Disc Bolt

PTCM

4

Fixed Pad Assembly

PTR

Lock Lever Link

1

5

Fixed Pad

PTCR

1Spring (large/small)

1

6

Fixed Pad Mounting Bracket

PTCQ

1

1

15

Hex. Hole Disc Bolt

PTCM

4

3

19

Hex. Hole Head Bolt

PTCF

12

Handgrip Link (with key ring)

14

Spring Pin

13

Hex. Hole Head Bolt

PTCA

2

16

U-nut

20

Hex. Hole Head Bolt

PTCD

2

8

Arm

21

Straight Pin

PTCP

1

22

Spring Washer

PTCY

2

10

Cam Assembly
3

Cam

18

Hex. Hole Head Bolt

16

U-nut

21

Straight Pin

When ordering, add 150 after Item No.

10

Item No. Q'ty (pc)

PTT
PTCT
PTCN
PTCP

1

1

1
1

PTCJ

1

Adjustment Plate Pin

PTCK

1

Rope

PTCU

1

⑦ is the main body and not for sale.

1
1

PTCV

Individual parts available
Part No.
11・24
12

Part Name

Item No. Q'ty (pc)

Spring (large/small)

PTCS

1

Handgrip Link (with key ring)

PTCL

1

ClampRange(Unit：mm)
Part Name

Part No.

Shackle Assembly1

Shackle18

Hex. Hole Head Bolt

16

U-nut
Lock Lever Link Assembly

2

11・24

Item No. Q'ty (pc)Part No.

PTH
PTCH
PTCN
PTF

Part Name
Movable Pad Assembly

1

4

1

9・23

1

15

1

Item No. Q'ty (pc)
PTE

Movable Pad

PTCE

1

Spike, Nut

PTCG

5

Hex. Hole Disc Bolt

PTCM

4

Fixed Pad Assembly

PTR

Lock Lever Link

1

5

Fixed Pad

PTCR

1Spring (large/small)

1

6

Fixed Pad Mounting Bracket

PTCQ

1

1

15

Hex. Hole Disc Bolt

PTCM

4

3

19

Hex. Hole Head Bolt

PTCF

12

Handgrip Link (with key ring)

14

Spring Pin

13

Hex. Hole Head Bolt

PTCA

2

16

U-nut

20

Hex. Hole Head Bolt

PTCD

2

8

Arm

21

Straight Pin

PTCP

1

22

Spring Washer

PTCY

2

10

Cam Assembly
3

Cam

18

Hex. Hole Head Bolt

16

U-nut

21

Straight Pin

When ordering, add 200 after Item No.

PTT
PTCT
PTCN
PTCP

1

1

1
1

PTCJ

1

Adjustment Plate Pin

PTCK

1

Rope

PTCU

1

⑦ is the main body and not for sale.

1
1

PTCV

Individual parts available
Part No.
11・24
12

Part Name

Item No. Q'ty (pc)

Spring (large/small)

PTCS

1

Handgrip Link (with key ring)

PTCL

1

11

MAX.340

169

Clamp
Range

(Unit：mm)
Part No.

Part Name
Shackle Assembly1

Shackle18

Hex. Hole Head Bolt

25

U-nut

2

Part No.

PTH
PTCH
PTCZ

Part Name
Movable Pad Assembly

1

4

1

9・23

1

15

Item No. Q'ty (pc)
PTE

Movable Pad

PTCE

1

Spike, Nut

PTCG

5

Hex. Hole Disc Bolt

PTCM

4

Fixed Pad Assembly

PTR

PTF

1

Lock Lever Link

PTCF

1

5

Fixed Pad

PTCR

1Spring (large/small)

PTCS

1

6

Fixed Pad Mounting Bracket

PTCQ

1

PTCM

4

Lock Lever Link Assembly
11・26

Item No. Q'ty (pc)12

Handgrip Link (with key ring)

PTCL

1

15

Hex. Hole Disc Bolt

13

Hex. Hole Head Bolt

PTCA

2

19

Hex. Hole Head Bolt

14

Spring Pin

PTCB

3

16

U-nut

20

Hex. Hole Head Bolt

PTCD

2

21

Straight Pin

PTCP

1

8

Arm

PTCJ

1

22

Spring Washer

PTCY

2

10

Adjustment Plate Pin

PTCK

1

3

Cam

18

Hex. Hole Head Bolt

16

U-nut

21

Straight Pin

Cam Assembly

When ordering, add 250 after Item No.

12

PTCN
PTCP

PTCU

1
1
1

⑦ is the main body and not for sale.

PTT
PTCT

Rope

PTCV

Individual parts available

1
1

Part No.

1

11・26

1

12

Part Name

Item No. Q'ty (pc)

Spring (large/small)

PTCS

1

Handgrip Link (with key ring)

PTCL

1

■ How to use
Use and operate the clamps in the following procedure.
Handgrip Link
1. Attach the remote control rope as
Round Link for Lock levershown in the figure on the right.

Remote Control Rope

2. Adjust the clamp range according to the thickness of the panel to beclamped by changing the positions of the adjustment plate pin. Set
the adjustment plate pin at the right position in the figure below by
selecting an appropriate one of the punch-marked indications ofclamping ranges. Further, when you newly pull out and insert theadjustment plate pin, insert it all through the main body to the end withthe toggle head outside.
Main body

Adjustment Plate Pin

Toggle Head

① PTC100

Toggle Head

Adjustment Plate Pin Adjustment Plate Pin Adjustment Plate Pin Adjustment Plate Pin

Adjustment Plate Pin

Clamp Range② PSC100

Adjustment Plate Pin

Adjustment Plate Pin

Clamp Range③ PSC150

Adjustment Plate Pin

Clamp Range

Adjustment Plate Pin

Adjustment Plate Pin

Adjustment Plate Pin

13

④ PTC200

Adjustment Plate Pin

Adjustment Plate Pin Adjustment Plate Pin Adjustment Plate Pin

Adjustment Plate Pin

Clamp Range⑤ PTC250

Adjustment Plate Pin

Adjustment Plate Pin

Adjustment Plate Pin

Adjustment Plate Pin Adjustment Plate Pin

Clamp Range

3. Pull down the lock lever andconfirm that the clamp is
opened.
Adjustment Plate Pin

Position of the leverin the open status

4. Under the open status of theclamp, insert the load all theway up to the upper end of the
opening, and then pull up thelock lever. Then, you are readyto lift up the load.
Pull upthe lock lever

Pull down
the lock lever

Insert the panel all
the way up to theupper end of
the opening.
If not inserted enough,there is a risk that it will
fall when lifted.

Panel
Backside ofpanelNote) Spike marring appears on the movable
pad side, so please use the backside of
the panel or other inconspicuous side.

14

5. Confirm first that the lock lever isunder the locked status, andthen lift the crane and move thepanel to a destination. In addition, use the balance (PSB) andlift the load at two points.
The Tightening Lock Position
During lifting up or down theload, do not operate the locklever. It may cause damage
with the clamp or the falling
down of the panel.
Lock Lever

7. When you have lowered thecrane till the wire rope is loosened enough, pull down the locklever to acquire the open statusof the clamp. (If not pulled down
enough, the clamp cannot be
unlocked.) In addition, make thearrangements for the panel not
to fall down or drop off (for thepanel to be temporarily fixed)
after the panel has landed, andthen loosen the wire rope andpull down the lock lever to open
the clamp.
Pull down
the lock lever

Example of use

RemoteControl Rope
Balance (PSB)

Panel

Clamp

6. After moving the load to a destination, lower the crane until you
have confirmed that the panel iscompletely on the ground.

8. If you move to the next
operation, start with No. 3 of theprocedure after confirming theclamping range and capacity
required.

15

9. When the remote control is found
impossible because of someobstacles on the backside of thepanel, replace the movable padwith a fixed pad, and then clamp
the panel with the front side of
the panel directed toward theoriginally movable-pad side. If
you proceed this way, you cancontrol the operation by using the
remote control rope without damaging the surface of the front sideof the panel. (Refer to the figure
below.) In addition, if spikes are
simultaneously fixed on both ofthe pads, the clamp range will
differ from the product feature
displayed, and it will be harder toremove the panel from the clamp.
When a spike is applied to
the front surface of the load,a spike marring is applied tothe surface.
Position of thelever in the open
statusRemote Control
Rope
Surface of panel

16

Replacespikes on
movable pad.
Backside of panel

The spare holes for fixing spikes arearranged in advance for PSC 100
and PTC 150/250, so if the spikes
are not effective enough to grip thepanel when it is clamped, replace
the positions of the spikes using thespare holes as shown in the figure
below.
Spike

Movable pad

Normal status

For reference(When the positions of
the spikes are replaced.)WARNING■ Operation Precautions
1. When lifting the load, all personnel must be clear of the area of operation to prevent falling accidents, etc.
2. Never use for the load beyond the clamp range. Confirm the dimensionsof thickness of the panel, and be sure to set the adjustment plate pin on
the position of clamp range.
(Refer to No. 2 of “how to use” on Page. 13.)
3. Confirm the weight of the load. Do not exceed maximum capacity of theclamp.
4. Set and lift the load at the horizontal center of gravity as shown in the
figure below. Use two clamps and balance (PSB) when lifting.

Center of gravity
Balance(PSB)

Clamp

15°
or more15°
or more17

5. Never lift two or more panels at
a time. It may cause a falling
accident of the panels. Be sure
to lift only one panel at a time.

Clamp

7. When lifting, special attention
must be given to prevent unintended contact with any otherobjects. (Be especially careful
during lifting and lowering operations.) A shock or loosening of therope may cause a falling accident.

Panel(two or more)

6. This clamp is dedicated for vertical lifting, not for lateral lifting ofpanel. Side grabbing of panel isstrictly prohibited. It is dangerous
because the clamp's tightening
force does not work.

8. Take specially care that the
remote control rope does not getcaught on scaffolding or otherobstacles during lifting andlowering operations.

Clamp
Panel

The lock lever may be released
and the clamp may come off,
resulting in a falling accident.

Clamp

18

Panel

Remote controlrope

9. Do not use the clamp with the pador panel (lifting load) attachedwith water, ice, snow, oil, sands,mud, etc.
10. Keep the height of the protrusionof the spikes on the movable-padside between 1.5 and 2mm.

In addition, the following clamping
statuses may cause dangers asshown in the figure below. The padsof the clamp may be damaged ordeformed, and a panel falling
accident may be caused.
PSC100(Less than 115mm)
Less than 125mm(Less than 80mm for PTC100)

1.5〜2mmMore than 50mm(PSC100)

11. Be sure to confirm that thesurface of panel is securely
adjusted by both of the pads ofthe clamp.

More than 60mm
(More than 25mm for PTC100)

PTC100：25mm or less
PTC150・250：60mm or less
PSC100：50mm or lessLess than 115mm (PSC100)
Less than 125mm(Less than 80mm for PTC100)
PTC100：80mm or more
PTC150・250：125mm or more
PSC100：115mm or more

Fixed pad25mm or lessLess than 115mm (PSC100)
Less than 125mm(Less than 80mm for PTC100)

In case of
PTC10080mm or more
Movable pad
60mm or less
(50mm or less)More than 50mm (PSC100)
More than 60mm
(More than 25mm for PTC100)

In case of
PTC150, 200
and 250125mm or more( )is the value(115mm or more)of PSC100.
Movable pad

1912. Never alter the clamp by user’sown, applying heating or welding. Heating, modifying, etc. will
significantly reduce the quality(strength).
13. Put the lock lever into the locked
status after having clamped thepanel. And be careful enoughnot to catch your hand or fingers
between the lock lever and theclamp.

15. When setting panels with interior
and exterior wall panels attachedto the upper frame, make surethat the upper frame is in thesurface where the pads of theclamps hit.
Gripping where the upper frame is
not in may cause the panel tobreak or fall.

14. When you pull up the panel,
install the clamp with the locklever side up.
Lock leverBackside of panel
Upper frame
60mm or less for PSC100
70mm or less
(25mm or less for PTC100)

Do not pull out a panel out of the
piled panels from the middle.
Panel
Pull out
Upper frame

125mm or more
(80mm or more for PTC100)(115mm or more for PSC100)

16. Do not use the clamp on panels
which spikes cannot bite, such as
metal panels or tiles, on bothsides or on one side of the panel.

20

17. Conduct daily inspection andmaintenance by referring toinspection standards to check tofind any abnormalities of the
movement of each parts.

CAUTION■ Maintenance and Inspection
1. Maintenance
Daily maintenance is important for efficientand safe operation even under the severe
use condition and for such purposes. Please
comply with the followings.
(1) Designate the inspection standards andcontrol.
(2) Keep clamps indoor and do not leavethem outdoor.
(3) Check the followings to maintain in a goodcondition.
(a) Operating condition.
(b) Wear of pads and spikes.
(c) Deformation of main body.
(4) Separate conforming clamps and otherhazardous items identified during use orinspection and designate the defective
sections. Perform maintenance any soon.
(5) Perform inspection and maintenanceonce a week by referring to inspection
standards.
(6) Lubricate sliding sections such as bolts
and pins periodically. However, be careful
not to put oil on the surface of the polyurethane rubber of the pad.

2. Periodic Inspection

Perform periodic inspection in accordancewith the periodic inspection and maintenance standards. Functions and life ofclamps may differ in a great degree as they
are used in varieties of fields under different
conditions of use. Therefore, preparationand practice of effective operation/inspection standards manual by users themselves
are recommended.
We ask you to establish complete maintenance and control for assurance of safety inreference to our inspection standards of ourclamp. For your preparation of thestandards, pay special attention to thefollowings.
(1) Operation and maintenance standards(A) Preparation of use criteria (shape ofload and operating methods).

(B) Thorough understanding and compliance of cautions on handling.
(C) Rules of inspection and check at site.
(2) Standards on periodic inspection(A) Establishing dates of periodic inspection.
(B) Establishing inspection and maintenance methods.
(a) Inspecting period.
(b) Person in charge of the inspection.
(c) Inspection site.
(d) Tools and devices for inspection.
(e) Establishment of permissible limit
of use.
( f ) Explicit designation of maintenance and repair methods.

3. Manufacturer’s inspection method

Our company’s inspection procedures are
as follow.
Check for(1) Deformation, wear, dirt or damage ofpads.
(2) Wear, rattle, loss of spikes.
(3) Wear of spikes.
(4) Deformation of main body.
(5) Deformation of shackle.
(6) Defects of bolts, pins, links, and springs.

■ Daily Inspection

Conduct daily checks and maintenance toprevent the loss of safety and efficiency.
1. Check that there are no cracks or damageat each parts of the main body, pad andshackle.
2. Check if bolts, nuts and pins are installed
securely.
3. Check if the movement and lubrication
condition of each part are good.
4. Check that there are no deformation,wear or loss of pad.
5. Check that there are no wear or loss of
spike.
6. Check that pad is not dirty.
7. Refer to inspection standards.

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■ INSPECTION STANDARDS FOR PTC, PSC
Item

Inspection method
Check fordeformation ofholes.

Limit of use

CausesRemedyWhen the degree of deformationof shackle hole exceeds morethan 1mm, and the degree of
deformation of pin hole exceeds
0.5mm.
Size Standard Limit

Size Standard Limit

ShackleBell Link

Size Standard Limit

Visually check ormeasure to findvending or
deformation.

When the degree ofbending or deformation
exceeds 5°.

Check for cracks
or deformation.

When found cracks or
deformation visually.

Visually check for
rattling of locking
pin.

When found rattling oflocking pin.
Arm

Overload
Sudden shock
load

Replace

Impossible
lifting angle

Main
body

Crack

Deformation

Main
body,
Arm

At each set position of theadjustment plate pin (refer toPage. 13), when the main bodyand arm are fully extended withthe movable pad open, theparallel dimension between thepads on both sides is larger thanthe maximum clamp range to thelimit dimension in the tablebelow.
Item No.

Limit dimensions ofdeformation of main bodyand arm (mm)4 or more
8 or more
8 or more
8.5 or more

22

Overload
Shock of falling
Sudden shock
load
Impossible
lifting angle

Discard of
main body
Replaceof arm

Item

Inspection method
Visually check forcracks, chips anddelamination ofpolyurethane
rubber.

Visually check ormeasuredeformation of pad.

Limit of use

CausesOverload

When visually found cracks,
chips and delamination.
Polyurethane rubber

Crack

Chip

Use on otherthan pad flat
surfaces.

Delamination

OthersWhen found more than 0.5mm
bending or deformation.

Overload

0.5mm or more

0.5mm or more

RemedySudden shock
load

Replace

Replace

Impossible
lifting angle
Visually check ormeasure for wearof polyurethane
rubber.

When the thickness of pad
becomes smaller than therespective size in the table below.
Item No.

Natural wear orothersLimit dimensions of use (T)Movable pad
8mm or less
8mm or less
8mm or less
9mm or less

Fixed pad
6mm or less
8mm or less
8mm or less
9mm or less

Replace

Polyurethane rubber

Pad

Steel plate

Visually check ormeasure for wear
or cracks of spike.

When the wear degree of the flat
surface of tip exceeds 1mm.
When foundcrack of tip.
1mm or more

Visually check ormeasure if the tipof spike isappropriate.

Crack

When protrusion of spike
becomes less than 1.5mm.

Natural wear orothersLifting of hard
objects, suchas steel,concrete andstone.

ReplaceNatural wear orothersLooseness of
installing nut

Tightening
adjustment

1.5mm or less

Visually check thatthe pad adjustingscrews are notloose or do not fall
off.

When found looseness or rattlingof screws.

Sudden shock
load
Impossible
lifting angle

When found falling off of screws(bolt and nut).

Tightening
adjustment

Failure to handle
Newor inspect, orInstallation
others.

23

Item

Inspection method

Limit of use

Visually check ormeasure to findbending or
deformation of thepin.

When found more than 0.5mm
bending or deformation.

Adjustment
Plate
Visually check or
Pinmeasure to findCausesWhen found cracks, falling off ofspring pin or damage.
0.5mm or more

RemedyOverload
Sudden shock
load
Impossible
lifting angle

Replacecracks or damage.

Visually check ormeasure to finddeformation of pinhole or link, etc.

When pin holes are stretched or
bent more than 0.5 mm.

Overload
Sudden shock
load
Impossible
lifting angle

Lock
Lever
Link

Size

Standard

Replace

Limit

Visually check if
the movement of
the lock lever issmooth.

When the movement oroperation of the lock lever is not
smooth because of bending or
deformation of link, etc.

Visually check ormeasure to finddeformation of pinhole, etc.

When pin holes are stretchedmore than 0.5 mm.
Bell link

Overload
Sudden shock
load
Impossible
lifting angle

Cam

Installing brackets
of movable pad

Visually check if
the movement of
movable pad of
installing bracket
is smooth.

24

Size Standard Limit

When the movement of theinstalling brackets of movable
pad or bell link is not smoothbecause of deformation etc. of
installing brackets or link.

Insufficientlubrication orothersReplace

Item

Inspection method

Limit of use

Visually check ormeasure to findthe wear or
deformation ofshaft part.

When found more than 0.5mm
bending or deformation.

When found more than 0.3mm
step or wear of shaft part.

Bolt,
Nut

Spring0.5mm or more

CausesRemedyOverload
Sudden shock
load
Impossible
lifting angle

Replace

0.3mm or more

Visually check tofind looseness ofbolts or nuts.

When found looseness or
missing of bolts, nuts and etc.

Visually check forappropriate
repulsive force
when the lock isapplied and theshackle ispressed.

When the shackle is pushed
down and there is no repulsive
force of spring.

Sudden shockloadLong-term use
or others

When visually found bending or
breakage of spring.

Replaceor adjustOverload
Sudden shock
load

Replace

Fatigue or others

25

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