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Inspection of Sheaves and Drums
Proper maintenance of the equipment on which the ropes operate has an important bearing on rope life. Worn grooves, poor alignment of sheaves and worn parts resulting in shock loads and excessive vibration will have a deteriorating effect.
Sheaves should be checked periodically for wear in the grooves which may cause pinching, abrasion, and bird-caging of the rope. If the groove shows signs of rope imprints the sheave must be replaced or re-machined and re-hardened. The same should be done on drums showing similar effect.
Poor alignment of sheaves will result in rope wear and wear on the sheave flange. This should be corrected immediately.
Excessive wear in the sheave bearings can cause rope fatigue from vibration.
Large fleet angles will cause severe abrasi