Why are there different Formats of Sheave Gauges?
In order to ensure optimal performance of sheaves and wire rope a complete range of sheave gauges should be used. We stock gauges in the following formats:
+2.5% API Sheave Gauges are used to determine when Maximum and Excessive Wear levels has been reached.
+5% Sheave Gauges are legacy format. They should fit snugly in new or re-machined sheaves. If correctly sized wire rope is run through the sheaves there will be a minimum of friction which should extend the life of the wire rope.
+6% API Sheave Gauges measures the minimum size for a new sheave.
+10% API Sheave Gauges measures the maximum size for a new sheave.
Other formats can be custom made upon request.
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