Okuma HK802 Spindle Repair

Possible cause of failure:
Customer was complaining of a bad vibration.
Front bearing had coolant sludge in it causing the bearing to fail.
Front housing is egged +5/+18(iso is +/-5).
Front bearing cover is full of coolant sludge.
Stator has been hot due to overloading, failed milli ohms and insulation continuity test.

Repair action:

Clean, inspect overall dimensions.
Balance shaft assembly.
Replace bearings,O-rings.
Rewind stator.
Grind Plate Grind 42mm front housing.
Adjust preload, balance, assemble and break in. Final quality control inspection.



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