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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 APPENDIX

D wire rope diameter W rated load
(for 1 single rope)
Safety factor
Ｓ＝6

(Change in % of the lifting capacity rate according to the lifting angle)
100% 96% 86%
（mm） （ton） Maximum allowable load (rated load) for 2 wire ropes (ton) Table for
width across
6 0.30 0.60 0.57 0.51 flats and
bolt / nut
8 0.53 1.07 1.03 0.92 screw size
9 0.67 1.35 1.30 1.16
Conversion
10 0.83 1.67 1.61 1.44 table for
inch / mm
12 1.20 2.41 2.32 2.08
14 1.64 3.28 3.15 2.83
Table for hex
16 2.14 4.28 4.12 3.69 key wrench /
hex lobe key
18 2.72 5.44 5.23 4.69 wrench
compliant
screw
20 3.35 6.70 6.44 5.77
22 4.06 8.12 7.81 7.00 Reference
table for
24 4.82 9.65 9.28 8.32 tightening
torque value
26 5.66 11.3 10.8 9.76
28 6.58 13.1 12.6 11.3
Conversion
30 7.55 15.1 14.5 13.0 table for
international
32 8.58 17.1 16.5 14.8 torque value
36 10.8 21.7 20.8 18.7
40 13.4 26.8 25.8 23.1 Chart for
pipe size
and diameter
per type
Calculation formula of a wire rope diameter and rated load (for 1 single rope) Lifting angle
and rated
＊ Refer to the calculated values as rough indications. load
correlation
table
★ When looking for the required wire rope diameter to lift a 3 ton load
① D= W×C Table for
① D= W×C main steel
material
20mm weight
D² D= 3×120= 360=19→
② W=
C
Comparison
table for
Ｄ＝ wire rope dia. (mm) hardness
Ｗ＝ rated load (ton)
Ｃ＝ 120 (constant)
(with Safety factor S = 6) Table for
bearing size
standard
★ When looking for the maximum capacity (rated load) of a wire rope with 12mm diameter
Basic
D² knowledge
② W= about
C
magnets
12² 144
W= = =1.2→ 1.2ton
120 120

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