Kia VX-500 Spindle Repair

This spindle had a leaking rotary union that allowed coolant to flow into the rear of the spindle. It eventually washed the grease from the bearings and ultimately caused the spindle to fail. The customer replaced the rotary union on this machine, installed our rebuilt spindle and was up and running problem free in just a few days.

Possible cause of failure:

  • Bearings are contaminated with coolant from the rear of the spindle
  • Taper is out of ISO
  • Front cover is damaged

Repair action:

  • Clean, inspect overall dimensions
  • Replace bearings
  • Kiss grind taper
  • Repair front cover
  • Adjust preload, balance, assemble and break in
  • Final quality control inspection


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