The Barnes Ball Screw Reconditioning Process
 
 

Fig. 4 - Visual inspection of worn nut.

 

Fig. 5 - Optical checking of worn leadscrew thread radius to determine radius wear and deformation.

 

 

 

 

Fig. 6 - Grinding leadscrew ball raceway in a Matrix 70 thread grinder.

 

Fig. 7 - Straightening of ball leadscrew before lead check.

 

 

 

 

Fig. 8 - Checking thread lead in master V-block.

 

Fig. 9 - Pre-cutting internal ball thread raceway in new ball nut before heat treatment.
     

Fig. 10 - Inspecting timing of ball thread return holes with ball thread raceway before heat treatment.

  

Fig. 11 - Checking hardness on ball nuts after heat treatment.