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  Return to Wire Rope Main Page and Detailed Wire Rope Data  
    Technical Information  
  Use and Care of Wire Rope  
  Wire Rope is a Machine  
    Installation of Wire Rope:  
  Foreword, Measuring the rope diameter  
  If you have to cut a rope  
  Unreeling the rope  
  Connecting the old rope to the new rope  
  Rope lay direction versus Drum Grooving  
  Winding on to the drum  
  Installation of Wedge Sockets  
  Using your rope for the first time  
  Efficiency ratings of end terminations  
    Inspection of Wire Rope:  
  How to inspect Wire Rope  
  Crown- and Valley Wire Breaks  
  Number of broken Wire Discard Tables  
  Reduction of diameter, Rope Wear  
  Rope Stretch, Core Wire breaks  
  Mechanical damages  
  Corrosion, Rope Removal and Cause  
    Maintenance:  
  Inspection of Sheaves and Drums, Dimensions of Groove Radius  
  Cut and Slip Procedure, Lubrication  
    Rope Properties & Data:  
  Tensile Strength and Fill Factor  
  Strand- and Swage Compaction  
  Rotation Resistant and Non-Rotating Wire Rope  
  Sheave and Drum Dimensions  
  Relative Service Life, Loss of Strength over Pins, Why Multistrand Ropes  
Technical Information – Maintenance
     
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  Cut and Slip Procedure

On multiple layer drums, wire rope will wear out at the crossover points from one wrap to the next. At these crossover points, the rope is subjected to severe abrasion and crushing as it is pushed over the rope 'grooves' and rides across the crown of the layer beneath. The scrubbing of the rope, as this is happening, can easily be heard.

In order to extend the rope's working life, shortening of the rope at the drum anchoring point of approx. 1/3 of the drum circumference, moves the crossover point to a different section of the rope. Now, a rope section previously not subjected to scrubbing and crushing will take the workload.

Lubrication

During fabrication, ropes are lubricated; the kind and amount depending on the rope's size, type and use, if known. This in-process treatment will provide the finished rope with ample protection for a reasonable time if it is stored under proper conditions, and in the early stages of the rope's working life. It must be supplemented, however, at regular intervals.

Re-lubrication of a wire rope is not always a simple task. Apart from lubricant being a messy matter in itself, old lubricant, dirt and other particles may cover the outside of a rope to a point were any newly applied lubricant will not be allowed to penetrate the inside of a rope. In these cases it becomes necessary to either thoroughly clean the rope, or to use a high pressure lubrication device which forces new lubricant into the rope.

If the wire rope surface is clean, re-lubrication can also be made with spray cans of specially formulated lubricant which penetrates the inside of a rope.

The re-lubrication procedure and program is very much dependent on the length and size of a rope and on the equipment the rope is installed on. In any case, if a planned program of regular lubrication is not carried out, the rope will deteriorate more rapidly.

Remember that tests have shown that non-lubricated ropes will generate only about 1/3 of the bending cycles than ropes which are well lubicated. Python® ropes with a plastic coated core have the advantage that the inner rope is 'permanently lubricated'; the lubrication is 'sealed in'.
     
     
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