Wire Rope Sling Weight Calculation

When slings are used to lift loads safety professionals must ensure the weight does not exceed the safe working load limit wll of the sling.

Wire rope sling weight calculation.

Type of sling choker factor wire rope 70 75 fiber rope 50 fiber webbing 75 80 chain 75 1 2 6 x 19 xips iwrc with a choker angle of 85 degrees capacity is 5000 pounds x 7 x 74 2590 pounds. Resulting plotted points landing within a wire rope class band indicate uncertain stability for that rope class. F w 2 where. F force in rope n lb f w m g weight of body n lb f m mass of body kg slugs.

If the weight is too great the sling may break and. See page 91 for reduced choker capacity when using these hook sizes. Example capacity of a single rope or wire. To calculate the load on a particular sling leg proceed as follows.

If the weight of a body is w the load in the wire is. Silver state wire rope 8740 south jones blvd. A sling is an assembly designed to connect a load to be lifted or turned to a lifting device such as the hook on a crane. This calculates the capacity of a wire rope sling based on the type of rope used in the sling and the angles at which the sling is used.

Wire rope figs 1 2 1x7 7x7 is a parallel lay construction with all filaments the same diameter and tends to be the stiffest of them all. For example assume a 2000 pound load is to be supported by 2 legs of a sling. Resultant force force tension x angle factor. To help demonstrate the breaking limit of wire rope the engineering toolbox have put together this handy table.

702 896 1977 hours mon fri. Take the total weight of the load and divide this by the number of legs supporting the load. They are also much more resistant to crushing and slightly stiffer. It lists the strength of improved plow steel ips wire rope that is uncoated and has a fibre core.

Fell free to consult the sling angle factor chart. Length tolerances single part wire rope slings standard length tolerance is plus or minus two rope diameters or plus or minus 0 5 of the sling length whichever is greater. The capacity of a single rope that follows a vertical line is 100 since the reduction factor is 1. Warrington fig 1 is a parallel lay construction with an outer layer.

They have also offered an example of the strength of 3 8 wire rope that has a safe working load of 10 9 kn. 7am 4pm sat sun closed.