Fadal Spindle Repair

Fadal Spindle Rebuild

This spindle was sent to us by our customer because they were experiencing very short spindle life from the OEM replacement spindles. We repair several other types of spindles for this customer so they have faith that we could extend the lifespan by repairing this spindle. We found that the housing and shaft bearing areas were well out of tolerance. This can cause premature bearing failure and part finish issues. We ground plate ground the bearing interfaces and repaired the spindle. Our customer reported back to us they have never had a spindle run this well in the machine since it was new.

Possible cause of failure:

  • Catastrophic front and rear bearing failure from contamination
  • Came in missing the front nut to load the front bearings properly
  • Also missing the drive pulley and drawbar shaft
  • Front housing is -30 min +5 max ISO allows +/-4
  • Front journals is +5 min +70 max ISO allows +/-7.5

Repair action:

  • Clean, inspect overall dimensions
  • Replace bearings
  • Replace front nut
  • Grind chrome plate and regrind front housing
  • Grind chrome plate and regrind front journal and taper
  • Adjust preload, balance, assemble and break in
  • Final quality control inspection

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Repair History - Here are examples of similar spindle repairs that may contain additional information that will help you. If you have additional questions, please contact us.