Lifting Block Loading – Angle Factor Multipliers

A single line sheave block used to change load line direction can be subject to total loads greatly different from the line pull.

Angle	Factor	Angle	Factor
0°	2	100°	1.29
10°	1.99	110°	1.15
20°	1.97	120°	1
30°	1.93	130°	0.84
40°	1.87	135°	0.76
45°	1.84	140°	0.68
50°	1.81	150°	0.52
60°	1.73	160°	0.35
70°	1.64	170°	0.17
80°	1.53	180°	0
90°	1.41	—	—

Total Load = Line Pull x Angle Factor

Example:
At 45 degrees, and 10,000 lb. line pull, Total Load = 10,000 x 1.84 = 18,400 lbs.

Load Limits Contents

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