Eyes should fit freely on the hook.
Snug fits greatly increase eye strain.
Tight chokes greatly increase sling stress.
Full wrap before choke gives no-slip lifting.
As the sling-to-load angle decreases, so does the rated capacity of a sling.
Use this chart for all type slings: rope, chain or synthetic web.
Sling-To-Load Angle is always the angle between the sling leg and the horizontal surface.
|Rated Sling Capacity (one leg)|
|Sling-To-Load Angle||Sling Lifting Efficiency||Sling Capacity @ 90º||Actual Sling Capacity|
|90º||100.0||1000 lbs.||1000 lbs.|
|75º||96.6%||1000 lbs.||966 lbs.|
|60º||86.6%||1000 lbs.||866 lbs.|
|45º||70.7%||1000 lbs.||707 lbs.|
|30º||50.0%||1000 lbs.||500 lbs.|
|15º||25.8%||1000 lbs.||258 lbs.|
|5º||8.7%||1000 lbs.||87 lbs.|
Warning: Work load limits will be reduced when less than 90° from horizontal angles of less than 30° are not to be used. Inspect before use. Additional requirements and sage operating practices are outlined in current OSHA, Federal Register Part 29, 1910.184 and ASME B30.9 c-2000.Death or injury can occur from improper use or maintenance!