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7.0 Lubricant Penetration
To inspect internal lubricant penetration a sharp spike or heavy-duty screwdriver
to open the wire rope. Alternatively, two pipe wrenches secured one metre apart,
and rotated in opposite directions will allow visual inspection.
Lubricant penetration to the wire rope core is often difficult due to the following:
• Wire rope design, particularly anti-spin and locked core wire ropes.
• Dirty or contaminated wire ropes.
(Use of a Viper Wire Cleaner is recommended)
• Ropes contaminated with solid used lubricant coatings.
(Use of a Viper Wire Cleaner is recommended)
During the wire rope operation, the rope movement onto the drum and over
sheaves is known to assist with the lubricant penetration.
If an NLGI#2 grade grease is used it may be necessary to pre-heat the lubricant
at ambient temperatures below 5 degrees C (41 F) to ensure adequate
penetration. Check with lubricant suppliers for method of pre-heating and
individual lubricant specifications. Be sure that the lubricant used will adequately
protect your wire rope from corrosion and wear.
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