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 MoreTree VMC 1060 Spindle Repair
The Tree VMC 1060 is a CNC vertical machining center. It comes equipped with a grease lubricated and pulley driven spindle capable of running up to 8,000 rpm.
CHALLENGE
This Tree VMC 1060 spindle arrived at our facility for a complete breakdown and evaluation. Upon inspection we noted that the front #1 and #2 bearings failed from coolant contamination. The rear housing cover and pulley were sticky with coolant residue. The gripper fingers, center post, and drive dogs showed signs of wear. Lastly, the shaft taper had 8-10µ runout and was pock-marked with poor contact.
SOLUTION
The following actions were performed on this Tree VMC 1060 spindle:
- Clean, inspect overall dimensions
- Kiss grind shaft taper
- Replace bearings, bellevilles, gripper fingers, post, GMN seal, o-rings, and assembly screws
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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