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 MoreGrosite 383000 Spindle Repair
This Grosite 383000 is from a K.O. Lee universal tool and cutter grinder. It is a grease lubricated and pulley driven spindle capable of running up to 7,760 rpm.
CHALLENGE
The bearings in this Grosite 383000 spindle felt very rough & notchy when rotated by hand in assembly incoming. The entire interior of the spindle was found to be contaminated with grinding swarf and cutting oil which had significantly degraded the grease in the bearings leading to excessive wear. Our full dimensional evaluation of the bearing journals & shoulders, housing bores and the wheel hub OD taper did not uncover any noteworthy deviations.
SOLUTION
The following actions were performed on this Grosite 383000 spindle:
- Clean all parts of the spindle
- Replace all bolts and o-rings
- Replace bearings
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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