ample protection for a reasonable time if it is stored under proper conditions. But, when the
rope is put into service, the initial lubrication may be less than needed for the full useful life
of the rope. Because of this possibility, periodic applications of a suitable rope lubricant are
necessary.
Following, are the important characteristics of a good wire rope lubricant:
1. It should be free from acids and alkalis,
2. It should have sufficient adhesive strength to remain on the ropes,
3. It should be of a viscosity capable of penetrating the interstices between wires and
strands,
4. It should not be soluble in the medium surrounding it under the actual operating
conditions,
5. It should have a high film strength, and
6. It should resist oxidation.
Before applying lubrication, accumulations of dirt or other abrasive material should be
removed from the rope. Cleaning is accomplished with a stiff wire brush and solvent, and
compressed air or live steam. Immediately after it is cleaned, the rope should be lubricated.
When it is normal for the rope to operate in dirt, rock or other abrasive material, the
lubricant should be selected with great care to make certain that it will penetrate and, at the
same time, will not pick up any of the material through which the rope must be dragged.
As a general rule, the most efficient and most economical means to do field lubrication/
protection is by using some method or system that continuously applies the lubricant while
the rope is in operation. Many techniques are used; these include the continuous bath,
dripping, pouring, swabbing, painting, or where circumstances dictate, automatic systems
can be used to apply lubricants either by a drip or pressure spray method (Fig. 56).
RT500
Applicable Standards / Regulations
344 REVISED:
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