Chevalier 1418 VMC with excessive run out


Possible cause of failure: Customer observed .002'' tool rock, but indicated no tool runout. Shaft taper is very worn with poor contact and 10-14µ runout. Drawbar gripper fingers are very worn, incoming retention force was 300lbs


Recommended action: Clean, inspect overall dimensions. Kiss grind BT-30 shaft taper Replace bearings, grippers & bellevilles.

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