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to Technical
Information Main Page |
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Wire Rope
Inspection
An inspection should include verification that none of these removal criteria
are met by checking for such things as:
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Surface wear, normal and unusual |
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Broken wires: Number and location |
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Reduction in diameter |
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Rope stretch (elongation) |
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Integrity of attachments |
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Evidence of abuse or contact with other objects |
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Heat damage |
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Corrosion |
| See table on the previous
page for maximum allowable wire breaks causing discard of the
rope. |
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| Crown Breaks |
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| Under normal operating conditions individual
wires will break due to material FATIGUE. Such breaks are usually
located at the CROWN of a strand. ALL wire rope removal criteria are
based on CROWN wire breaks. |
| Valley Breaks |
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 Remove
the rope from service even if you find a SINGLE individual wire break
which originates from inside of the rope. These so called VALLEY breaks
have shown to be the cause for unexpected complete rope failures. |
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Inspection
of Sheaves
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| Sheave groove
matches rope |
Sheave groove
too small |
Sheave groove
worn out |
New rope will
be damaged |
Check for worn
and corrugated sheaves |
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Handling of
Wire Rope
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WRONG |
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For a complete discussion on
Handling, Installation, Inspection, and
Maintenance of Wire Rope, please ask for our separate Catalogue |
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