Wire rope life is dependent on the surface on which it is moves. In a typical crane or a hoist the Wire rope passes over Wire Rope Drum and Sheaves to make the fall arrangement. Machining of the Drum and sheaves also plays and important role in the life of the wire rope. Reva Hence uses Special purpose CNC Machine for machining of Wire rope Drums and Sheaves.

1. Proper Groove Radius: As shown below the sheave groove radius should be maintained as mentioned in the standards. Also the pitch of the grooves and the grooving angle should be maintained.
   
   
2. Proper Pitch : Pitch plays an important role if the Pitch is too less or too high both will harm the wire rope and the operations. The Lesser pitch will result in ropes overlapping each other.
3. Groove Depth : Groove depth is alo an importance parameter. If the depth is not ok then the rope will tend to come out of the grooves.
4. Smooth Surface : it is important to have  smooth surface for the wire ropes. Any sharp edges or uneven surface can cause early damage to the wire ropes. As grooving of the drum is a threading process which require a strong machine to handle so care should be taken that the vibrations are not there and machined rope drum is smooth

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