The Bridgeport Torq-Cut 22 is a smaller CNC vertical machining center. It comes fitted with a grease lubricated and belt driven spindle capable of running up to 7,500 rpm.
Read MoreWhitnon Speedfam Spindle Repair
The Whitnon Speedfam spindle is grease lubricated stator driven, and capable of running up to 1,450 rpm.
CHALLENGE
The field failed incoming tests on this Whitnon Speedfam spindle. Once the housing was removed, the field looked as though it was smashed, broken wires were exposed. The bearings were heavily contaminated with a dark brown sludge. Both the front and rear shoulders and the OD pilot face had high run out. Lastly, the rear housing was severely egged and out of ISO. No dimensional deviations were noted for this repair.
SOLUTION
The following actions were performed on this Whitnon Speedfam spindle:
- Clean, inspect overall dimensions
- Replace bearings, o-rings, and assembly screws
- Kiss grind the front and rear shoulders
- Grind, chrome plate, and finish grind the rear housing
- Rewind the field
- Clean up the customer supplied wheel hub
RESULT
After reassembly of all components, adjusting bearing preload, and undergoing break-in and testing procedures, this spindle passed our final quality inspection before being returned to our customer with a 1-year warranty.
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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.
It’s a fact of machining — eventually, even top-of-the-line turning machines will experience a spindle failure. Spindles endure tension, torsion, heavy loads, and speeds up to and beyond 150,000 RPM, to name a few of the standard stressors.
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