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.
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GMN TX80CX14271908 Spindle Repair
Affectionately known at Northland Tool as a dumbbell spindle , this spindle is not for a dumbbell to put together. The tooling interface is a critical portion of the repair and can only be done correctly with the proper equipment and gauging. We incorporate our grinding department into GMN spindle repairs to insure proper face and taper contact. We are one of the few spindle rebuild companies with this ability.
The GMN TX80CX14271908 is a grinding spindle that is grease lubricated and belt driven. It is capable of running up to 10,000 rpm for high speed grinding.
CHALLENGE
When this GMN TX80CX14271908 spindle arrived at Northland Tool and Electronics we performed a full breakdown and evaluation. Upon inspection we found that the front nut was loose causing excessive runout. After measuring the critical dimensions (bearing journals, housing, taper, etc.), we noted two unacceptable deviations. First, the front and rear housings were egged. Second, the shaft tapers were out of ISO and will need to be addressed. No other dimensional deviations were found.
SOLUTION
The following actions were performed on this GMN TX80CX14271908 spindle:
- Clean, inspect overall dimensions
- Replace bearings
- Grind-chrome plate-finish grind front and rear housings
- Kiss grind shaft tapers
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.
OD grinding — or outside diameter grinding — is a cornerstone of precision manufacturing, where exact specifications and flawless surface finishes are essential.
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