Possible cause of failure:
Front bearing failure from coolant contamination. Coolant washed out the grease in #1 bearing, contaminated 2,3
Clean, inspect overall dimensions.
Replace bearings with sealed bearings.
Adjust preload, balance, assemble and break in. Final quality control inspection.
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Catastrophic bearing failure was the main cause of this spindle malfunction
Continue reading to learn how Northland Tool performed this repair and converted a Weiss GHK 176239 spindle from grease-injected to permanent grease lubrication…