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 MoreBridgeport VMC 800 Spindle Repair
The Bridgeport VMC 800 is a CNC vertical machining center. It comes equipped with a grease lubricated and belt driven spindle capable of running up to 6,000 rpm.
CHALLENGE
When this Bridgeport VMC 800 spindle arrived at Northland Tool and Electronics, the first thing we noted was that the front and rear housing cover screws were loose incoming. Upon disassembly, we found that the #3 bearing of front triplex set had suffered a catastrophic failure. The cage was broken and the rolling elements were severely damaged. Lastly, we noted that the tooling taper ID was damaged and will need to be addressed. No other significant dimensional deviations were noted for this repair.
SOLUTION
The following actions were performed on this Bridgeport VMC 800 spindle:
- Clean, inspect overall dimensions
- Kiss grind the tooling taper ID
- Replace all 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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