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 MoreHermle C800U Spindle Repair
The Hermle C800U is a 5-axis machining center. It can come fitted with this grease lubricated and gear driven Weiss spindle capable of running up to 15,000 rpm.
CHALLENGE
This Hermle C800U spindle was sent in to Northland Tool and Electronics for a full breakdown and evaluation. Upon arrival, the first thing we noted was that the bearings were noisy when rotated by hand in assembly incoming. After completing the breakdown and evaluation, we found that the front and rear bearings were heavily contaminated with coolant. We inspected all the critical dimensions, but found no unacceptable deviations on this spindle.
SOLUTION
The following actions were performed on this Hermle C800U spindle:
- Clean, inspect overall dimensions
- Replace bearings, 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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