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 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 had significant contamination with particulate. The #1 front bearing suffered a catastrophic failure and the #2 rear bearing was worn and full of particulate. There was evidence of excessive heat on shaft, spacers, and housing. The shaft, rotor, and spacers had rub out damage as well. We also noted that the Spieth nut was galled onto the shaft and had to be machined off. Lastly, the stator (field) failed electrical testing and the encoder ring assembly was damaged with no sensor provided.
The following actions were performed on this Niigata SPN-40 motor:
- Clean, inspect overall dimensions
- Rewind and reinstall stator
- Rework rub out damage to shaft, rotor, and spacers
- Replace bearings, spieth nut, encoder ring assembly, 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.
Does your spindle need repair? GET A QUOTE TODAY
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.
Niigata SPN50 Spindle Repair
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,… [...]
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… [...]
Downtime is inevitable for any machine, but knowing how to reduce downtime or minimize its likelihood is critical.Read More