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FAQ >> Crane Wire Rope Replacement Criteria - What is bad rope?

Crane Wire Rope Replacement Criteria - What is bad rope?

According to ASME B30.2, replacement criteria for wire rope operating on steel sheaves and drums shall be as follows: In running ropes, twelve randomly distributed broken wires in one lay or four broken wires in one strand in one lay. One outer wire broken at the contact point with the core of the rope, which has worked its way out of the rope structure and protrudes or loops out from the rope structure. Wear of one-third the original diameter of outside individual wires. Kinking, crushing, birdcaging, or any other damage resulting in distortion of the rope structure. Evidence of heat damage from any cause. Reductions from nominal diameter greater than those listed below: 1/64" for ropes up to 5/16" diameter.

  • 1/32" for ropes over 5/16" diameter up to 1/2" diameter.
  • 3/64" for ropes over 1/2" diameter up to 3/4" diameter.
  • 1/16" for ropes over 3/4" diameter up to 1 1/8" diameter.
  • 3/32" for ropes over 1 1/8" diameter up to 1 1/2" diameter.

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