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 MoreVoumard VMX-65 Spindle Repair
This Voumard VMX-65 spindle is oil lubricated and stator driven, making it capable of running over 60,000 RPM.
CHALLENGE
This Voumard VMX-65 spindle rotated freely when it arrived at Northland Tool, but the bearings felt worn when spun by hand. The field failed our incoming testing, but once the spindle was taken apart and the power cord removed it passed. After a full dimensional evaluation, we noted that the rear bearing shoulder had high run out. There were no other dimensional deviations to record for this repair.
SOLUTION
The following actions were performed on this Voumard VMX-65 spindle:
- Clean, inspect overall dimensions
- Replace bearings, bolts, o-rings, and power cord
- Kiss grind rear bearing shoulder
RESULT
After reassembly of all components and adjusting bearing preload, we put the spindle through a rigorous break-in and testing procedure to make sure it passes our final quality inspection. See below for the passing test reports:
Front Bearings Vibration Analysis Spectrum: Rear Bearings Vibration Analysis Spectrum:
Motor Analyzer Summary:
This spindle passed our final quality inspection and was 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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