An extremely use ful tool to identify the condition of the Sheave Groove.
√ Available in 12 sizes √ Designed with a +5% tolerance nominal diameter of the groove.
Sheaves should be checked periodically for wear in the grooves, which may cause abrasion, broken wires and bird caging of the wire rope.
A correct sized Sheave Groove allows a wire rope to pass through unhindered by friction or obstructions. According to ISO 16625, the groove of the drum and sheave should have a diameter within 5% to 10% bigger than wire rope diameter.
To determinate the amount of wear:
• Place the proper size Mordec Wire Rope Sheave Gauge in the sheave.
• Shine a light behind the gauge. Light should not be detected between the gauge and the root of the groove.
• If wear is evident, the sheave should be re- machined or replaced
Too small of the Groove compresses the rope and reduces its useful life because the rope will roll into the sheave groove introducing torque and the twist which may cause high stranding and bird- cages.