Giuliani EMP-25-3000-14289 Spindle Repair

The retaining cage of the front bearing in this spindle was compromised by coolant contamination. This allows the balls of the bearing to stack up on each other causing failure. Fortunately for our customer they removed the spindle from service before catastrophic failure happened. This saves on spindle repair costs and lead time.

Possible cause of failure:

  • Front bearing failure from contamination
  • Pilot has 8 microns runout

Repair action:

  • Clean, inspect overall dimensions
  • Replace bearings
  • Adjust preload, balance, assemble and break in
  • Final quality control inspection


DETAILED CAUSE OF FAILURE

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