Whitnon 311-2144-021 Spindle Repair

Whitnon 311-2144-021 Spindle Rebuild

This spindle had rear bearing failure. Our evaluation of the bearings found evidence of loading that is indicative of high belt tension. We like to share the cause of failure with our customers so they are better prepared to take corrective actions to increase their spindle life.

Possible cause of failure:
Rear bearing failure.
Rear shaft nut labyrinth is damaged.
Rear bearing’s may have gotten fatigued from excessive belt tension.

Repair action:
Clean, inspect overall dimensions.
Replace bearings.
Machine the rear shaft nut labyrinth damage.
Adjust preload, balance, assemble and break in. Final quality control inspection.


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Repair History - Here are examples of similar spindle repairs that may contain additional information that will help you. If you have additional questions, please contact us.