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Lifting Block Loading – Angle Factor Multipliers

Block Loading - Angle Factor MultipliersA single line sheave block used to change load line direction can be subject to total loads greatly different from the line pull.

Angle Factor Multipliers

Angle Factor Angle Factor
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.

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