Possible cause of failure:
Bearings noisy from use and contamination.
50 taper worn with low spots.
Drawbar force is low.
Drive dogs have wear marks.
Grippers worn from use.
Spanner holes in drawbar nut are galled.
Spacers are not square.
Clean, inspect overall dimensions.
Grind, chrome plate and finish grind the 50 taper.
Rework the spanner holes on the drawbar nut.
Replace quad set and a pair of bearings, grippers bellevilles, and orings.
Rework the drive dogs.
Adjust preload, balance, assemble and break in. Final quality control inspection.
Does your spindle need repair? GET A QUOTE TODAY
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…