Sheaves

1)Provide a cushioning effect in the groove areas which contact the rope strands . 2)Reduce contact pressure at rope-groove interface to one-twelfth that of a steel sheave 3)Practically eliminate wear on the outer layer of wire rope strands 4)Extend wire rope life by a factor of at least 2 to 3 times 5)Increase safety in operation, 6)Reduced expenses associated with wire rope and sheave replacement.