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 MoreHardinge Quest 42 Spindle Repair
The Hardinge Quest 42 is a CNC turning center that comes equipped with a grease lubricated and belt driven spindle. This spindle is capable of running up to 8,000 rpm for high production lathe work.
CHALLENGE
This Hardinge Quest 42 spindle arrived at Northland Tool and Electronics we completed a full breakdown and evaluation. Upon inspection we found that the front bearings failed from contamination, and some in the rear as well. It was also noted that the drive pulley ID had some pre-existing score marks, likely from installation or removal. Lastly the chuck alignment pin had wear on one side. No other dimensional deviations were noted for this spindle.
SOLUTION
The following actions were performed on this Hardinge Quest 42 spindle:
- Clean, inspect overall dimensions.
- Replace all bolts and o-rings
- Replace bearings, front cover gasket, chuck alignment pin.
- Kiss grind drive pulley ID to remove high spots (some visible lines will remain, but will not affect function.)
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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