Chain Sling Capacity Formula

This tutorial is all about determining the length of your chain slings.

Chain sling capacity formula. All diameters are measured in millimetres mm. Rated capacity working load limit for wire rope slingsas the angle of the sling leg decreases from 60 to 45 to 30 as shown in the capacity chart the rated capacity of the sling decreases. As an example a horizontal sling angle of 30 will increase the tension factor by 2 times therefore doubling the weight felt by the sling and all related rigging. Ensure that the chain is free of twists and is protected from any sharp corners on the load.

Rated capacity in tons of 2 000 lbs. Always consider the sling angle when making a lift. Wire rope and chain are the important part of the hoist which are closely bound up with the safe work load now let s talk about how to calculate the swl of ropes and chains. All weight are calculated in kilograms kg.

This method applies to all single double triple and quad legged chain slings. Lightly oil grade 80 chain slings before prolonged storage. The angle of the sling can reduce the capacity of all the rigging due to sling tension. Diameter in mm squared the weight in kg.

Ensure that the load is evenly distributed on all sling legs. All capacities in tons of 2000 lbs. This is due to the difficulty of rigging a quad leg chain sling so that all legs share the load equally. 37 113 99 113.

As we all known. We provide wire rope chain synthetic slings cargo control hardware fall protection and various other types of equipment for the utility marine and construction industries. Rated capacities shown apply only to 6x19 and 6x37 classification wire rope. Never heat treat grade 80 chain slings.

Sling angles of less than 30 should not be used. We need to install a set of slings between the crane hook and a spreader bar which will create a 90 degree full included. When adjusting the working load limit of four legged chain slings the number of legs entered in the formula must be 3 not 4. When our instructors conduct rigging courses they teach the participants a quick method to calculate the minimum size of length of slings for a given load using a formula which has been included at the bottom of our r ated capacity card.