Super SJC User manual

This 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.
Operation Manual
SUPERTOOLCO.,LTD.
Screw Cam Clamp
(J Type)
SJC

1
brand lifting clamps are energy-saving lifting equipment
which have been developed for the purpose of transporting steel
materials.
Operate lifting clamps after carefully reading and understanding
this instruction manual for enhancing efficiency and safety of oper-
ation.
We conduct a pulling test with a load three times (or twice) of rated
capacity and a manufacturing serial number is marked on each
product, thus directing a special attention to safety.
Advanced functions, reasonableness and versatile applications
of finely and carefully designedlifting clamps ensure
prime efficiency and economy.
Proper use
Prime efficiency and economy
Special considerations on safety

2



〜
Mistaken use of lifting clamp may cause a danger such as dropping of
load.
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 have
purchased clamps but also to their operators to ensure that actual oper-
ators have acquired enough knowledge, safety information, and
precautions of the clamps.
Safety precautions are divided into two classifications in this manual;
“Warning” and “Caution,”.
WARNING:
CAUTION:
Indicates a potentially hazardous situation
which, if not avoided, could result in death or
serious injury.
Indicates a potentially hazardous situation
which, if not avoided, could result in medium
damage or slight injury, or could result in prop-
erty damage.
After reading this manual, make sure to keep it at a place of easy access
by any users.
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 both
to WARNING and CAUTION which are of great importance.
The sign of indicates prohibited actions.
The sign of indicates that an action is enforced or instructed.
Meanings of Signs
The signs of and indicate that precautions should be taken.
The contents of warning or caution are described at each sign.
※
Two point lift for righthand figure.

1. Handling in general
2. Check before operation
WARNING
WARNING
CAUTION
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.
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Make sure to execute an inspection periodically and before
each operation.
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Sling to be used for the clamp shall be an appropriate one for
lifting operation.
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℃)
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 or
extremely low-hardness, or a member with the gripping part
tapered down more than 8°)
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.
Prohibited
Prohibited
Prohibited
Instructed
Instructed
Instructed

4
3. Lifting operation
4. Operation of a crane
WARNING
WARNING
CAUTION
Never lift a load exceeding the rated capacity.
Do not operate a crane in such a way as to give an impact to
the 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 to
the clamp, which has been removed from the load.
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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 the
steel 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.
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.
Install two or more clamps in a balanced way to keep the
balance of load.
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 open-
ing.
When you use the clamp with a lock mechanism, never fail to
have the lock engaged.
Prohibited
Prohibited
Prohibited
Two point lift
Instructed

5
Stop the lifting operation by crane for a moment when the
load is applied to the lifting ring for safety checking. (depth of
the 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 area
of the load)
CAUTION
CAUTION
WARNING
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.
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5. Maintenance, storage and alteration
Persons with specialized knowledge designated by the
business 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 of
the clamp, cams, and pads.
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.
Raising and lowering operation by crane should be done slowly
and carefully.
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.
Instructed
Instructed
Instructed
Instructed
Prohibited
Prohibited

6
b
a
a=b
Within60°
One
wire rope
Fig.A
Fig.B
General warning for use(comon to all lifting clamp models)
■
Be sure to select proper model clamps for use.
Pay special attentions to keep the lifting direction (rope angle).
Confirm the weight of the load. Do not exceed maximum capacity (des-
ignated ton) on clamps. (Never overload.)
Before use, confirm followings:
(a) Proper capacity of clamps.
(b) No abnormal movements of clamp or loosening of any bolts.
(c) No oil or other foreign matters on the surface of the cam and pad.
Never use for load beyond the clamp range.
When installing clamps, insert a lifting load completely until it comes in
contact with the deepest of the jaw opening of main body.
Depending on the model or capacity of the clamp, the cam teeth
may not bite a load sufficiently when the load is a hard or light
weight material (Less than 1/5 of maximum capacity or less than
1/4 of maximum clamp range). Confirm the condition of clamp for
safety.
Confirm that the safety lock is completely engaged in case clamp has a
built-in lock.
Confirm that the load is well balanced. Determine the clamp position or
the center of gravity of the rope properly. It is especially important to
determine the horizontal center of gravity.
When lifting at 2 points, be sure to use two wire ropes, and make them
equal length. (Fig. A)
1.
2.
3.
4.
5.
6.
7.
8.
9.
When lifting at 2 points, keep the lifting angle
within 60°. (Fig. B)
(Follow the standards if lifting angle is specified
depending on items.) If the load is long, use a
balance.
10.
Prohibited

7
Prohibited
Prohibited
Instructed
Instructed
Never lift two or more steel plates or steel members at a time.
The load may move to an unexpected direction when lifted off the
ground and as such confirm the center of gravity and the clamping posi-
tion for safety when raising. Sufficient caution should be taken until the
clamp with the load becomes completely balanced.
When changing directions of the load or any similar operations, all
personnel must be clear of the area of operation. (Fig. C)
Do not ride on the lifting load.
Never use clamp for riding or carrying
person.
Before operation, the surface of load must always be clean and
free of scale, coatings or other foreign matters that will reduce
clamping force significantly.
When raising, special attention must be given to prevent the rope
from loosening by its unintended contact with any other objects.
When raising again after the load is put on ground, reconfirm the clamp
condition.
Do not use clamp for heated load or in a corrosion liquid because safety
factor and durability will be reduced in such conditions.
Do not alter clamp by welding, cutting by gas or by any other modifica-
tion.
Do not weld electrically a load while being lifted by clamp.
Conduct daily maintenance and lubrication.
11.
12.
13.
16.
17.
18.
19.
20.
21.
22.
14.
Keep momentary inverting angle of a
steel plate within 30°. (Fig. D)
15.
Fig.C
Fig.D
Within
30°
Within
30°

8
Maintenance and Inspection
■
1. Maintenance
2. Periodic Inspection
Daily maintenance is important for efficient and safe operation even
under the severe use condition and for such purposes, please comply
with the followings.
(1) Designate the use standards and control.
(2) Keep clamps indoor and do not leave them outdoor.
(3) Check the followings to maintain in a good condition.
(a) Operating condition.
(b) Any abrasion, damage, or clogging at teeth of cam and pad.
(c) Deformation of main body - at jaw opening in particular.
(4) Separate conforming clamps and other hazardous items identified
during use or inspection and designate the defective sections.
Perform maintenance any soon.
(5) For the storage, place soft material as wooden chip in-between cam
and pad to protect the teeth.
(6) Perform inspection and maintenance once a week by referring to
“Inspection Standards”. Lubricate sliding sections periodically.
(However, remove oil at teeth of cam and pad.)
Perform periodic inspection in accordance with the periodic inspection
and maintenance standards. Functions and life of clamps may differ in
a great degree as they are used in varieties of fields under different
conditions of use. Therefore, preparation and practice of effective
handling/inspection standards manual by users themselves are recom-
mended. We ask you to establish complete maintenance and control for
assurance of safety in reference to our Manufacturer’s Inspection Stan-
dards of our clamp. Clamp is designed for easy replacement of parts
and therefore, do not fail to replace defective parts. Also, keeping spare
parts at all times is recommended. For your preparation of the stan-
dards, pay special attention to the followings.
(1) Operation and maintenance standards
(a) Preparation of use criteria (shape of load and operating methods).
(b) Thorough understanding and compliance of cautions on handling.
(c) Maintenance and storage.
(d) Rules of inspection and check at site.

9
(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) Movements.
(2) Wear, loss, and/or clogging of/at the teeth of the cam and screw.
(3) Deformation of main body.
(4) Deformation of shackle.
(5) The status of bolts, pins, links and springs.
(6) Deep scratches in general.
(7) Other checking items based on the Standards.

10
① D= W×C
① D= W×C
20mm
D= 3×120= 360=19→
W= 120
12²= 120
144=1.2→ 1.2ton
② W=C
D²
② W=C
D²
  100% 96% 86%
（mm） （ton）
 6  0.30  0.60  0.57  0.51
 8  0.53  1.07  1.03  0.92
 9  0.67  1.35  1.30  1.16
10  0.83  1.67  1.61  1.44
12  1.20  2.41  2.32  2.08
14  1.64  3.28  3.15  2.83
16  2.14  4.28  4.12  3.69
18  2.72  5.44  5.23  4.69
20  3.35  6.70  6.44  5.77
22  4.06  8.12  7.81  7.00
24  4.82  9.65  9.28  8.32
26  5.66 11.3 10.8  9.76
28  6.58 13.1 12.6 11.3
30  7.55 15.1 14.5 13.0
32  8.58 17.1 16.5 14.8
36 10.8 21.7 20.8 18.7
40 13.4 26.8 25.8 23.1
■
Themaximumratedcapacityofwireropesalsodiffersaccordingtotheliftingangle.
Therefore,afterpayingattentiontotheliftingangle,alwaysusewireropeswiththeappropriatediameter.
Correlationtablebetweentheliftingangleandtheapplicableloadforwirerope(for2-pointlifting)
★Whenlookingfortherequiredwireropediametertolifta3tonload
★Whenlookingforthemaximumcapacity(ratedload)ofawireropewith12mmdiameter
＊Refertothecalculatedvaluesasroughindications.
Calculationformulaofawireropediameterandratedload(for1singlerope)
Ｄ＝wireropedia.(mm)
Ｗ＝ratedload(ton)
Ｃ＝120(constant)
(withSafetyfactorS=6)
Liftingangleandratedloadofwirerope
■ JISG35256×24 Atype
Dwireropediameter
Wratedload
(for1singlerope)
(Changein%oftheliftingcapacityrateaccordingtotheliftingangle)
Maximumallowableload(ratedload)for2wireropes(ton)
Safetyfactor
Ｓ＝6

Screw Cam Clamp
(J Type)
Operation Manual and Inspection Standards
SJC

11
0〜25
0〜40
0〜40
0〜40
SJC 0.5
SJC１
SJC 2
SJC 3
0.5
1
2
3
1.6
2.6
3.8
4.8
Screw Cam Clamp
(J Type)
■Uses
Clamps suitable for lifting, suspending, lateral pulling, and turning over
steel plates and shapes in various industries including civil engineering,
construction, iron and steel, shipbuilding, and drum manufacturing indus-
tries.
It is also ideal for hanging chain blocks, hoists, etc., and pulling of steel
materials, etc., as a jig.
■Features
■Specifications
Clamp securely with screws and circular cam.
In proportion to the lifting load, the circular cam tilts and the contact
surface becomes larger and clamps more firmly.
The circular cam is designed whereby the spring forces always make it
return to the normal position.
The main body is a mold forged product of special alloy steel processed
with optimal heat treatment, thus strong and durable.
1.
2.
3.
4.
Item No. Rated Capacity (ton) Clamp Range (mm) Net Weight (kg)
SJC

12
Body
3
6
4
4
5
7
1
2
8
■REPLACEMENT PARTS AND FITTINGS
1
2
3
4
5
6
7
8
1
1
1
2
1
1
1
1
Attention :
1) When ordering, specify the capacity (TON) of ITEM No.
(For instance, the cam for SJC3 is SJT3.)
2) Periodic lubrication is required at cam holder and screw.
Part
No.
PartName
Set
Screw
Assembly SJCR
SJT
Screw
Handle
Circularcam
Stopperpin
Camholder
Retainingring
Spring
Steelball
Cam
Assembly
Detail ItemNo. SetQty

13
The screw will tighten when turned clockwise, and will loosen when terned
counterclockwise.
Thecamwillretreatabout3mmaftercomingintocontactwiththesteelplate
whentightningthescrew.Continuetotightenthescrewuntilthecamisfirmly
in contact with the steel plate.  The tightening torque of the screw must
exceed25N･m(about250Kgf･cm).
Whensettingtheclamp,insertthe objecttobeliftedcompletelyintothejaw
openinguntilitcomesintocontactwiththedeepestsection.Tightenthescrew
firmlytillallsectionsoftheinnercamtoothringcomeintosquarecontactwiththe
objecttobelifted.
1.OPERATION METHOD
1）
2）
3）
The cam will retreat
about3mm
(becomenarrower)
All sections of the inner
cam toothring in square
contactwith the objectto
belifted.
Tighteningtorque：
over25N・m
Cam
Objecttobelifted
Screw
Clampsettoposition
andnotunderaload Whenunderaload
Theclampingbiteisbigger
Inserttheobjecttobelifted
completelysoitcomesinto
contactwiththedeepestsection.
■How to use

14
2. METHOD OF USE
(1) When lifting at 2 points, keep the lifting angle within 60°.
(Always lift work pieces at 2 or more points for safety).
(2) Always lift at 3 points with complicated shaped objects, and balance the work pieces
at the proper clamping position and with the proper length of wire rope.
Keep the lifting angle within 60° between ropes.
(When lifting steel plates horizontally, always lift at 4 points.)
(3)The clamps can also be used shaped steels temporarily for turning over.

15
(1) When hanging hoist and chain blocks,
keep the angle of hanging directions
within 30゜.
The clamps are used for positioning steel structures for welding or pulling.
(Never be overloaded)
(3) When hanging from two different pillars.
※When the clamps are used continuously for
hanging hoist and chain block over a long period
of time, check the clamping force regularity at
short intervals.
(2) When hanging hoist and chain blocks,
always connect U-shakeles to lifting
ring.

16
Wedge shapes over 8°※
Round bars
Curve shapes with
radius under 300mm
Objects with uneven
surface(no flat surfaces
for clamping)
Do not lift when clamped the tapered
side even if the wedge shapes under 8°
※
○DISASSEMBLING
1
○ASSEMBLING
2
(1) Turn Screw counterclockwise and remove
it from the Body.
(3) Remove two stopper pins from the cam holder and
detach the circular cam and the retaining ring.(Fig.2)
(2) As show in the drawing on the right, tilt the
circular cam and remove the retaining ring
with snap ring pliers. Next, remove cam
holder, steel ball and spring from the body.
(Fig.1)
Connect the retaining ring temporarily on the stem
of the circular cam.
Insert the circular cam into the cam holder from the
sphere-shaped section and fix them with two stopper
pins.
Insert the spring and next steel ball into the bottom
hole of the cam holder.
I
nsert the cam holder assembly of ②into the hole of
the body and then make sure to set the steel ball of
③to the bottom hole of the cam holder.
Fix the retaining ring of ①to the groove of the body
with snap ring pliers.
Replace and tighten the screw.
①
②
③
④
⑤
⑥
(Fig.1)
(Fig.2)