Possible cause of failure:
Front and rear bearing failure from contamination.
Drawbar force is low(1465lbs), minimum is 1800lbs.
Taper is out of ISO.
Hydraulic nut that loads the rear roller has been milled.
Rear roller cage is broken and missing some rollers.
Rear housing is out of ISO.
Clean, inspect overall dimensions.
Replace bearings, bellevilles, o-rings, gripper balls.
Manufacture a new hydraulic nut. Part cannot be purchase because part is obsolete.
GPG Rear housing.
Kiss grind taper.
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…