Vollmer QXD 200 Spindle Repair

Vollmer QXD 200 Spindle Repair

The Vollmer QXD 200 is a CNC cutting tool grinder.  It comes equipped with a grease lubricated and belt driven spindle that is capable of running up to 3,000 rpm.



CHALLENGE

This Vollmer QXD 200 spindle was seized incoming.  After a full breakdown and evaluation, we noted that the #1 bearing of the front tri-set was immobile.  The grease was washed out of the 1st bearing and it was nearly dry in the rest.  Lastly, the brass commutator OD was rough.  No dimensional deviations were noted for this repair.

 

SOLUTION

The following actions were performed on this Vollmer QXD 200 spindle:

  • Clean, inspect overall dimensions
  • Skim grind of the OD of the brass commutator to true it
  • Replace bearings, o-rings, and assembly screws

 

RESULT

After reassembly of all components, adjusting bearing preload, and undergoing break-in and testing procedures, this spindle passed our final quality inspection before being returned to our customer with a 1-year warranty.

DETAILED CAUSE OF FAILURE

  • Bearings that are dry with no grease present

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