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 MoreShigiya G30 Spindle Repair
This Shigiya G30 spindle is grease lubricated, belt driven, and capable of running up to 3,600 rpm.
CHALLENGE
When this Shigiya G30 spindle arrived at Northland Tool and Electronics, we noted that the pulley nut was loose and the spindle was noisy when spun by hand. After a full breakdown and evaluation, we noted that the front bearings failed and the #1 bearing had a broken cage. There was signs of contamination throughout the spindle and the rear bearings had some slight contamination and felt rough when spun by hand. Lastly, the pulley OD taper had some high spots from belt wear and slightly high runout. No other dimensional deviations were noted for this repair.
SOLUTION
The following actions were performed on this Shigiya G30 spindle:
- Clean, inspect overall dimensions
- Replace bearings, o-rings, and assembly screws
- Kiss grind the rear OD taper
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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