Prater Hammer Mill Spindle Repair

The Prater Mega Hammer Mill is used in the food production industry to process materials into a fine powder.


Prater Spindle Repair


During breakdown of this spindle we found that the front labyrinth ring had rubout damage and did not fit correctly on the front housing cover. The front housing cover was severely warped, causing the shaft to bind when the labyrinth ring was tightened. The 90mm front housing bore was severely worn and oversized by +20/+50µm (ISO = ±7.5µm).


  • Manufacture & install new front & rear housing covers
  • Rework the damage to the front labyrinth ring
  • Grind, chrome plate & finish grind the 90mm front housing bore
  • Replace bearings, seal, gasket & assembly screws
  • Adjust preload, assemble, balance and break in. Final quality control inspection


Does your spindle need repair? GET A QUOTE TODAY

More Case Studies

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.