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
Niigata SPN50 Spindle Repair
The Niigata SPN-50 is a CNC horizontal machining center. It comes standard with an oil mist lubricated and belt driven spindle capable of running up to 12,000 rpm.
This Niigata SPN50 spindle was sent in to Northland Tool and Electronics because it had suffered a crash. Upon inspection, we found that the drawbar, grippers, and collet were worn. The hydraulic nut was damaged and will need to be replaced. Lastly, the taper measured out of ISO and will need to be ground.
The following actions were performed on this Niigata SPN50 spindle:
- Clean, inspect overall dimensions
- Replace bearings and bellevilles
- Replace drawbar, grippers, and collet
- Manufacture new hydraulic nut
- Kiss grind shaft taper
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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Niigata SPN-40 Spindle Motor Repair
This Niigata SPN-40 spindle motor was sent in with the spindle to be repaired. Upon inspecting the motor, we noted that the interior of motor… [...]
Niigata SPN40 Spindle Repair
This Niigata SPN40 spindle suffered a catastrophic failure of the #1 and #2 front bearings. After inspection, we noted that the shaft 40 taper was… [...]
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