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
OKK VP500 2APC Spindle Repair
The OKK VP500 2APC is a bridge style CNC vertical machining center. It comes fitted with a grease lubricated and stator driven spindle capable of running up to 12,000 rpm.
When this OKK VP500 2APC arrived at Northland Tool and Electronics we completed a full breakdown and evaluation. After inspection, we noted that the front bearings had suffered a catastrophic failure, the cages were broken. The rotary union ceramic button was cracked, allowing coolant into the spindle. Lastly, the bellevilles and o-rings were worn.
The following actions were performed on this OKK VP500 2APC spindle:
- Clean, inspect overall dimensions.
- Replace bearings, o-rings, and bellevilles
- Customer supplied new rear bearing (we will not install.)
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