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These SWAT sling are formed by two or more identical pieces of webbing placed side by side terminated at each end of fitting common to all pieces.These slings are manufactured using either round slings or flat webbing slings,depending upon the type and the safe working load.Hooks,master links and auxilary links are manufactured from quenched and tempered alloy steel.It is available in a choice of two,three or four leg versions and are attached with a metal component for effective usage.SWAT slings are stiched directly into the metal components.Round slings being attached via auxilary links.These attachments provide for the efficient handling of loads with permanent lifting points.Endless type bridle slings allow for the rotation of the fittings resulting in an infinite number of attachment and load contact point.Do not place the load carrying splice in a connection point to the load or in the lifting mechanism.
Working load limits for multi-legged slings are based on the following conditions:
1.Even load weight distribution on all legs.
2.The legs must be of the same length,if the load is to the hang level.If the load is rigged and not all the legs are sharing the load,the assembly design factor is reduced.
3.All bridle legs are used at the same horizontal angle.If the conditions of the lift vary from those above,the work load limit must be re-calculated.
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Lifting Capacity Of Multi-Legged Sling/Working Load Limit
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| Colour
Code |
Width |
Multi-Leg
Sling at 90 angle |
| 2
legs |
3
legs |
4
legs |
|
Violet
|
25
|
2800(2YIML-25)
|
4200(3YIML-25) |
5600(4YIML-25) |
|
Green
|
50
|
5600(2YIML-50)
|
8400(3YIML-50) |
11200(4YIML-50) |
|
Yellow
|
75
|
8400(2YIML-75)
|
12600(3YIML-75) |
16800(4YIML-75) |
|
Grey
|
100
|
11200(2YIML-100)
|
16800(3YIML-100) |
22400(4YIML-100) |
|
Red
|
125
|
14000(2YIML-125)
|
21000(3YIML-125) |
28000(4YIML-125) |
|
Brown
|
150
|
16800(2YIML-150)
|
25200(3YIML-150) |
33600(4YIML-150) |
|
Blue
|
200
|
22400(2YIML-200)
|
33600(3YIML-200) |
44800(4YIML-200) |
|
Orange
|
250
|
28000(2YIML-250)
|
42000(3YIML-250) |
56000(4YIML-250) |
|
Orange
|
300
|
33600(2YIML-300)
|
50400(3YIML-300) |
67200(4YIML-300) |
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Uniform
Load Method
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a>Double
Legged Slings.
For all angles between the legs from 0 degree-90 degree(0 degree-45 degree to the vertical)
WLL=1.4 X WLL of a single leg made from similar sling.When additionally marked for angles between the legs of 90 degree-120 degree(45 degree-60 degree to the vertical).
WLL=1 X WLL of a single leg made from similar slings.
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b>Three
and four legged slings.
For all angles between the legs from 0 degree-90 degree(0 degree-45 degree to the vertical)
WLL=2.1 X WLL of a single leg made from similar slings.When additionally marked for angles between legs of 90 degree-120 degree(45 degree-60 degree to the vertical).
WLL=1.5 x WLL of a single
leg made from similar slings.
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