Ewag Spindle Failed From Contamination
Possible cause of failure:
Spindle bearings felt very rough when rotated by hand.
Front & rear bearings failed from contamination with coolant & swarf, grease was almost completely washed out.
Shaft tooling pilot 18mm OD is -9µ undersized with 6µ runout, pilot face has 6-8µ runout.
Clean, inspect overall dimensions.
Grind, chrome plate & finish grind tooling pilot OD, kiss grind pilot face.
Replace bearings, o-ring, 90° push connect fitting, 3mm alignment pin.
Adjust preload, balance, assemble and break in. Final quality control inspection.