WinGD RT-flex50DF, Maintenance Manual, Page: 27 / 586

Maintenance
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Winterthur Gas & Diesel Ltd.
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3. Data to Attach Ropes and Slings
You must know the data that follow:
D A sling with one strand has the total of load weight
D For a sling with two strands, each strand has one half of the load weight
D For a sling with four strands of equal load, each strand has one quarter of the
load weight.
D More stress is applied to strands that have a large angle between the attachment
points.
D Less stress is applied to strands that have a narrow angle between the
attachment points.
Ropes can move on smooth surfaces (pipes and shafts etc). A soft, wooden board
between the rope and the component prevents movement.
Use a cloth or a wooden pallet to prevent damage to ropes. Sharp edges can cut
steel strands.
Always make sure that the load is correctly attached to prevent a fall.
When a rope is wound around an item two times, the friction increases. You can use
this procedure to help prevent movement of a shaft that has surface oil.
You can wind hemp ropes around the hook to prevent movement.
Do not wind steel ropes around loads. As an alternative, put steel ropes across the
load.
Hold ropes in your open hands and keep your fingers clear. Do not hold the load at
the bottom. Always lower the load on to an applicable base on a flat surface.
General Guidelines: Wire Rope Slings, Span-sets, Eye Bolts, etc.
2016