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Summary of Contents for Super SJC
- Page 1 Screw Cam Clamp (J Type) Operation 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. SUPER TOOL CO., LTD.
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Page 3: Proper Use
brand lifting clamps are energy-saving lifting equipment which have been developed for the purpose of transporting steel materials. Proper use Operate lifting clamps after carefully reading and understanding this instruction manual for enhancing efficiency and safety of oper- ation. Prime efficiency and economy Advanced functions, reasonableness and versatile applications of finely and carefully designed lifting clamps ensure... - Page 4 〜 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 ...
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Page 5: Check Before Operation
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. -
Page 6: Lifting Operation
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. - Page 7 ● 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 Instructed falling over of the load and security around the landing area...
- Page 8 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.
- Page 9 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.
- Page 10 ■ Maintenance and Inspection 1. Maintenance 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.
- Page 11 (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.
- Page 12 Lifting angle and rated load of wire rope 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) ■ ■ JIS G 3525 6×24 A type W rated load (for 1 single rope) D wire rope diameter Safety factor Ｓ ＝6 (Change in % of the lifting capacity rate according to the lifting angle) 100% Maximum allowable load (rated load) for 2 wire ropes (ton) （mm） （ton） 6 0.30 0.60 0.57 0.51 8 0.53 1.07 1.03 0.92 ...
- Page 13 Screw Cam Clamp (J Type) Operation Manual and Inspection Standards...
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Page 15: Specifications
The main body is a mold forged product of special alloy steel processed with optimal heat treatment, thus strong and durable. ■Specifications Item No. Rated Capacity (ton) Clamp Range (mm) Net Weight (kg) SJC 0.5 0〜25 SJC１ 0〜40 SJC 2 0〜40 SJC 3... - Page 16 ■REPLACEMENT PARTS AND FITTINGS Part Name Part Set Q ty Detail Item No. Screw Screw SJCR Assembly Handle Circular cam Stopper pin Cam holder Assembly Retaining ring Spring Steel ball 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.
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Page 17: Operation Method
■How to use 1.OPERATION METHOD The screw will tighten when turned clockwise, and will loosen when terned 1） counterclockwise. The cam will retreat about 3mm after coming into contact with the steel plate 2） 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 3）... -
Page 18: Method Of Use
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. - Page 19 (1) When hanging hoist and chain blocks, (2) When hanging hoist and chain blocks, keep the angle of hanging directions always connect U-shakeles to lifting within 30゜ . ring. (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.
- Page 20 Curve shapes with Objects with uneven Round bars radius under 300mm surface (no flat surfaces for clamping) Wedge shapes over 8°※ ※ Do not lift when clamped the tapered side even if the wedge shapes under 8° ○ DISASSEMBLING (1) Turn Screw counterclockwise and remove it from the Body.
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Page 21: Daily Inspection
■ CAUTION: ◆ Use within the rated capacity. ◆ Use within the clamp range. ◆ Do not use for any objects other than steel materials. ◆ Do not use for hard (30 HRC or higher) load. ◆ Lifting is not allowed for a load tapering down in upward direction. ◆... - Page 22 ■ INSPECTION STANDARDS FOR SJC Item Inspection method Limit of use Remedy Visually check or use When found visually. color dyes to find cracks. Check wear or deformation When the diameter of any one part of of shackle and screw hole. circumference of any hole exceeds the respective size in the table below. Rated capacity (ton) Body Discard 22.5 26.5 36.5 45.5 （mm） 27.5 27.5 27.5 32.3 （mm） When the difference of A a nd B e xceeds 5%.
- Page 23 Item Inspection method Limit of use Remedy Visually check if Cam returns When Cam does not return to its original automatically to an original position position when moved by due to the loss of adequate repulsive power hands. from deformation. Replace Spring Visually check clearance of When the spring becomes 5% shorter than spring coils. its original length or when the clearance between the coils becomes small. Visually check and measure When the degree of wear exceeds 0.5mm.. the degree of wear. length of wear Visually check or use color When found visually. dyes to find cracks at the crack Circular Replace bottom cam teeth. Visually check for broken When any broken tooth is found. cam teeth. broken tooth Measure each section for When the space among Body, Cam Holder wear. and Cam becomes large, and exceeds Holder 0.5 mm. Measure deformation.
- Page 24 Item Inspection method Limit of use Remedy Measure each section for When the space with the hole of Cam Holder wear. exceeds 2mm, resulting rattling. Stopper Visually check or measure Replace When deformation exceeds 0.2mm. to find deformation. When the movement of Cam is not smooth. Measure wear or deformation. Replace when ball diameter of ball exceeds the size in the table below. Steel Rated capacity (ton) Replace Ball Diameter （mm） When the movement of Cam is not smooth.
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