Mori Seiki MV-65 Spindle Repair

Mori Seiki MV-65 Spindle Rebuild

Coolant entered the interior of this spindle causing the grease to wash away from the front roller bearings. Much like running a car without oil once the bearing lubrication is compromised it’s really a matter of time before failure.

Possible cause of failure:

Catastrophic failure of the #1 front roller. Bearing grease was washed out, housing is full of oil.
Shaft ceramic taper has 18-20 microns runout.

Recommended action:
Clean, inspect overall dimensions.
Grind the ceramic 40 taper
Replace bearings, orings and screws.
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.