Matsuura ES550V Spindle failed from contamination



CHALLENGE

Cause of failure: Spindle is heavily contaminated with coolant, front bearing cage broken, drain ports were plugged. Bearing lubrication is currently grease injection, we will convert to grease for life. Shaft taper & face have wear, 3µ runout in taper. Customer does not use Big-Plus tooling.

SOLUTION

Action Taken: Clean, inspect overall dimensions. Kiss grind shaft taper. Replace bearings, Bellevilles, o-rings & screws. Adjust preload, balance, assemble and break in. Final quality control inspection.

DETAILED CAUSE OF FAILURE

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