Page 286 - 世霸SuperToolVol.6

Supertool clamp selection standards for 2-point lifting

The maximum rated capacity of lifting clamps differs according to the lifting angle.
As shown in the following table, when the lifting angle increases, the load weight on the lifting clamps and the ropes
increases and the lifting capacity rate decreases in proportion. Therefore, after paying attention to the lifting angle,
always use lifting clamps and ropes with the appropriate rated capacity.

Correlation table between the lifting angle and the applicable load (for 2-point lifting)

Main item name, No.
APPENDIX

0°
30°
Screw cam clamps
Lifting hooks (HHC)
60°
Vertical lifting clamps
Table for
width across
Lateral, horizontal lifting clamps
(GVC-R, GVC-E, HLC-HE, HLC-U)
flats and
bolt / nut
Steel beam lifting clamps (HLC-S/W)
(GVC-R, SVC-HE, SVC-E, SVC-L, SVC)
screw size
Conversion
table for Lifting capacity rate－▶ 100％ 96％ 86％
inch / mm
(SCC, SCC-N, SJC, SJC-S, SDC-S/N/WN, SWC-S/N)
Clamp rated capacity Maximum allowable rated load for 2 clamps (ton)
(for 2 pcs)
Table for hex
key wrench / ○ ○ ○ ○ ○ 0.5 × 2pcs ＝ 1 ton 1 0.96 0.86
hex lobe key
wrench ○ ○ ○ ○ ○ 1 × 2pcs ＝ 2 ton 2 1.9 1.7
compliant
screw ○ ○ 1.5 × 2pcs ＝ 3 ton 3 2.9 2.6
○ ○ ○ ○ ○ 2 × 2pcs ＝ 4 ton 4 3.8 3.4
Reference
table for
tightening ○ ○ ○ ○ ○ 3 × 2pcs ＝ 6 ton 6 5.8 5.2
torque value
○ ○ ○ ○ 5 × 2pcs ＝10 ton 10 9.6 8.6
○ 6 × 2pcs ＝12 ton 12 11.5 10.3
Conversion
table for ○ ○ 7 × 2pcs ＝14 ton 14 13.44 12.04
international
torque value ○ ○ 10 × 2pcs ＝20 ton 20 19.2 17.2
★ The allowable lifting angle may differ according to the lifting clamp type and rated capacity. Always read carefully the operation
Chart for manual of the purchased lifting clamps before use, and observe the precautions for safe operation.
pipe size ★When lifting with 2 lifting clamps or more (with 2 lifting points or more), always use clamps of the same model and same rated capacity.
and diameter
per type
Lifting angle
and rated How to read the correlation table (Example) lifting of a 5.5 ton steel load with 2 lifting
load points and the following lifting angles
correlation
table
A) When the lifting angle is at 0° (vertical lifting)
(1) In the column 0° of the correlation table, look for the smallest value above 5.5 ton. It is “6 ton”, in the 5th row from the top.
Table for (2) Then from the “6 ton” row determined in step (1), look for the clamp rated capacity on the left. It is “3 x 2 pcs = 6 ton”.
main steel
material Therefore, use 2 pcs of 3 ton lifting clamps.
weight
Comparison
table for
hardness
B) When the lifting angle is at 60° (with same lifting load as above)
(1) In the column 60° of the correlation table, look for the smallest value above 5.5 ton. In this case it is “8.6 ton”, in the 6th row from the top.
Table for (2) Then from the “8.6 ton” row determined in step (1), look for the clamp rated capacity on the left. It is “5 x 2 pcs = 10 ton”.
bearing size Therefore, use 2 pcs of 5 ton lifting clamps.
standard
Always use clamps with same model and same rated capacity.
Basic
knowledge
about
magnets

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