Catastrophic bearing failure was the main cause of this spindle malfunction Continue reading to learn how Northland Tool performed this repair and converted a Weiss GHK 176239 spindle from grease-injected to permanent grease lubrication……Read More
Bridgeport 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.
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.
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
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.
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Running this spindle too long caused deformed ball bearings and damage to the outer race Damage to the outer race is consistent with prolonged operation after spindle exhibited initial signs of needing to be rebuilt Every spindle rebuilt by North…Read More