Wire Rope Sling Capacity Calculation Formula

Rated capacities shown apply only to 6x19 and 6x37 classification wire rope.

Wire rope sling capacity calculation formula.

Click here for. Forsling swl depends on the length of the sling leg l and the headroom between the hook and the load h. The rated capacity of a wire rope sling is based upon the minimum breaking force mbf of the wire rope used. The safe working load for various rope sizes and slinging configurations has been combined to enable the swl to be taken directly from the chart.

For instance try 45 or 30 degrees. Example capacity of a single rope or wire. Millimetres mm and multiply by 8. The rope material with the loading factor to produce a safe working load chart.

If the weight of a body is w the load in the wire is. Single part body mechanically spliced wire rope slings flemish eye splice in the standard flemish eye mechanical splice wire rope is separated into two parts. As we all known. Whenever you lift a load with the legs of a sling at an angle you can calculate the actual load per leg by using the following three step formula.

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. Rope dia d 12 mm swl kg d2 mm x8 d mm x d mm x 8 12 x 12 x 8 1152 kg swl t 1 15 tonnes the above equation can be reversed to calculate the diameter d in millimetres of fswr needed to lift a given load. Then for bridge hitch. The rated capacity is based both on sling fabrication components minimum breaking force of rope used splicing ef ciency number of parts of rope in sling and number of sling legs and sling application components angle of legs type of hitch d d ratios etc if you are using one wire rope sling in a vertical.

The center of the rope and eye. For wire rope fs is 6 for general purpose and 7 for heavy industry. Single part body mechanical splice slings have a higher rated capacity than hand spliced slings. Swl wire rope dia 2 8 kgs.

Swl kg d2 mm x 8 for example. All weight are calculated in kilograms kg. F force in rope n lb f w m g weight of body n lb f m mass of body kg slugs. All diameters are measured in millimetres mm.

The capacity of a single rope that follows a vertical line is 100 since the reduction factor is 1. Rated capacities basket hitch based on d d ratio of 25. To calculate the swl in kilograms of fswr square the rope diameter d in. The load chart below has been prepared for 6 x 24 1570 grade galvanised steel wire.

A thumb rule formula is. Three adjacent strands to one. Wire rope sling selection rated capacities design factors and d d ratios. Swl 12 12 8 1152kgs.

Diameter in mm squared the weight in kg. If the calculated head room is greater than the available head room try typing in a smaller angle for known angle a.