Hitachi Seiki VS60 Spindle Repair

Possible cause of failure:
Bearing failure from contamination.
Main drawbar tube is cracked in several places where the rotary union sits.
Drawbar force is 1600lbs
Taper needs a cosmetic kiss
Customer supplied CT tooling and retension knob

Repair action:

Clean, inspect overall dimensions.
Replace bearings.
Replace gripper balls.
Replace OEM drawtube.
Replace OEM drawbar springs.
Replace O-Rings
Kiss grind taper
Adjust preload, balance, assemble and break in. Final quality control inspection.



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