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 MoreFischer MFN-1045 Spindle Repair
The Fisher MFN-1045 spindle is from an ID grinding machine. It is oil mist lubricated and capable of running up to an impressive 45,000 rpm.
CHALLENGE
This Fischer MFN-1045 spindle arrived at our facility for a full breakdown and evaluation. Upon inspection, we noted that the front bearings had failed from excessive heat. We recommended to our customer that we replace the steel ball bearings that were in the spindle with some ceramic ball bearings. This change would allow the spindle to handle the high speed of 45,000 rpm while creating less heat. No dimensional deviations were noted for this repair.
SOLUTION
The following actions were performed on this Fischer MFN-1045 spindle:
- Clean all parts of the spindle
- Replace all bolts and o-rings
- Replace steel ball bearings with ceramic equivalent
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.
DETAILED CAUSE OF FAILURE
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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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