Jones & Shipman Suprema 65D Spindle Repair

Possible cause of failure:
Spindle was seized incoming.
Catastrophic failure of the #1 and #2 front bearings from contamination.
Front housing has scoring from a previous rebuilder, but this was not a factor in the spindle failure.
Front journal is -5/-6µ, rear journal is 0/-4µ tapered (iso is +/- 3.5µ) but again are not a factor in the failure.

Repair action:
Clean, inspect overall dimensions.
Replace bearings.
Adjust preload, balance, assemble and break in. Final quality control inspection.



DETAILED CAUSE OF FAILURE

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