python logo
home products technical information distributors
Gray bar shadow
  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 – Installation of Wire Rope
     
Back
  to Technical Information Main Page
 
     
Connecting the old rope to the new rope

Depending on the type of rope several accepted methods are available.

Welding
Welding two ropes together is common in the steel industry. If properly done, welding may develop sufficient strength to complete the rope installation. However, the welded portion of the rope is rather stiff, and the welded steel wire material may become brittle. Since the welded portion has to pass over sheaves, there is the danger that the weld may break.

If installing Python® wire rope as well as all non-rotating types we do not recommend the welding procedure. Welding might damage the seizings and the rope may unravel getting damaged beyond repair.

Becket Loops
A common method for heavy crane rope installations. A steel sleeve only slightly larger than the rope diameter is swaged on to the rope end and a small auxiliary cable protrudes from the sleeve. Either, the old rope is furnished also with a becket loop, or the old rope will be connected to the becket loop with a cable grip.
  Use of Cable Grips

The most common method to install a wire rope. The type of cable grip depends on the rope type and construction.

Non-rotating rope must be installed with a swivel between old and new ropes. The old rope may have developed torque during it’s working life and we must ensure that this torque is not transferred to the new rope.

Python® types Multi and Super 8 may be installed with a swivel. In fact, if you have to change either of these constructions for a 6-strand rope, particularly when this rope has a different lay direction, a swivel is of definite benefit.

Python®-HS 9 and Python® Ultra must not be installed with a swivel. Doing so will unlay the rope and damage it beyond repair. Use two cable grips and connect them with an auxiliary cable.


When using cable grips, the end of the grips have to be tightly seized on to the rope body to prevent accidental slip-out of the rope. Alternately, you may wrap the grip end with a strong reinforced industrial strength adhesive tape.

 
     
     
     
     
    Back to Top  
     
© 2003-2014 Python Wire Rope. :: Web Design and Layout :: BAUSTEIN Strategic Design Group Inc.