We offer: steel wire rope slings

 

GENERAL INFORMATION ABOUT SLINGS
   
 
1 Sling producer
2 Sling type
 3  Serial production – unique number. It guarantees full identification of elements used in production of a given sling
4 Working length of a sling
5 Rope or sling diameter
6 CE mark
7 WLL – allowed working load limit of a sling, when used at an angle not exceeding 45º, and using choke

All of the information mentioned above HAVE TO be placed on a new sling.

 
The chart below enlists temperature ranges in which it is allowed to use slings.
Sling type Material Temperature range Annotations
F Steel wire rope with natural fiber core -40º to 100ºC Short term exposure to higher temperatures is possible
F Steel wire rope with artificial fiber core -40º to 100ºC  
F Steel wire rope with steel core -40º to 150ºC Short term exposure to higher temperatures is possible
S Steel wire rope with natural fiber core -40º to 100ºC Short term exposure to higher temperatures is possible, WLL lowered to 90% of nominal value
S Steel wire rope with artificial fiber core -40º to 100ºC Short term exposure to higher temperatures is possible, WLL lowered to 90% of nominal value
S Steel wire rope with steel core -150º to 200ºC Short term exposure to higher temperatures is possible, WLL lowered to 90% of nominal value
   
Length of a sling is defined by the distance from the point of hanging a sling to the point of hanging a load. Below schemes show correctly marked sling length.
   
It is important not to exceed 60º angle between a leg and the direction of lift. It is unacceptable.
WLL depends on the cosine of an angle between a leg and the direction of lift (in case of multi leg slings).
In case of a multi leg sling with a different length of legs it is important to remember that the biggest weight is going to be lifted mostly by a leg for which the angle α is the lowest, in an extreme case (angle α = 0º) the whole load is carried by a single leg.
If all of the legs of a multi leg sling are not used during work, to determine the WLL you need to use the factors below:
   
Sling type Number of legs used Factor – (multiplier of the nominal WLL value)
2-leg 1 0,5
multi-leg 2 0,75
multi-leg 1 0,33
   
Using choke lowers load capacity to 80% of the nominal value. In case of multi – leg slings, when calculating WLL it is important to take into account value of the α angle, as well as the choke itself.

 

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