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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 – Inspection of Wire Rope
     
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Mechanical Damages   Fittings
 
It is nearly impossible to list all variations of mechanical damage a rope might be subjected to. Therefore, the following list should only be taken as a guideline. None of these damages are repairable. However, the magnitude of the damages may vary from a slight cosmetic damage to total destruction of the wire rope. If you are not sure about the extent of the damage, change the rope, or call us for technical assistance and advice.

  Bird Cage (6-strand rope) caused by shock loading.
  Bird Cage (non-rotating rope) caused by worn sheave grooves.
  Bird Cage forced through a tight sheave.
  Protruding Core because of shock loading, torque build-up during installation, tight sheaves, or incorrect rope design.
  Inspect the fittings on your rope and look for wire breaks at the shank of sockets or sleeves. Inspect the fittings for wear, distortion, cracks, and corrosion. Follow the inspection criteria of the fitting manufacturer and DO NOT ATTEMPT TO REPAIR ANY WIRE ROPE FITTING YOURSELF! Watch for missing hook latches and install new ones if necessary. If latches wear out too rapidly, ask us for special Heavy Duty latches which may fit your hook. Some hook manufacturers offer self-locking and special Gate Latch hooks.
   
   
 
Inspect wire rope at all fittings. Replace fitting if any broken wires are detected.
 
   
     
Example of a wire rope which jumped out of the sheave. Note the imprint of the sheave flange.
 
Example of a rotation resistant wire rope which was forced to run in too tight sheave grooves. Result is so called 'core popping'.
   
   
Kinks
   
Kinked wire rope due to inproper installation procedure.
Kinked wire ropes which have been used. Kinks are pulled tight and caused distortion and failure.
 
 
Wire rope rolled off a sheave  
 
Multiple drum winding: Layer-to-Layer Crushing  
 
Smooth drum winding: Srubbing between drumwraps  
 
Smooth drum winding: Crushing at Crossover Points  
     
     
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