Tree VMC 1060 Coolant Contamination Spindle Failure



CHALLENGE

Front bearings #1 & 2 failed from coolant contamination. Rear housing cover & pulley are sticky with coolant residue. Gripper fingers & center post have heavy wear Drive dogs have light wear Shaft taper has 8-10µ runout and is pock-marked with poor contact.

SOLUTION

Clean, inspect overall dimensions. Kiss grind shaft taper. Replace bearings, Bellevilles, gripper fingers & post, GMN seal, o-rings & screws. Adjust preload, balance, assemble and break in. Final quality control inspection.

DETAILED CAUSE OF FAILURE

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