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
Renaud GP-0 Spindle Repair
The Renaud GP-0 spindle is grease lubricated, stator driven, and capable of running up to 3,630 rpm.
This Renaud GP-0 spindle arrived at Northland Tool and Electronics with bearings that were very noisy when rotated by hand in assembly incoming. The stator (field) also failed electrical testing incoming. Upon closer inspection, we noted that the stator was burned out and had contaminated all of the bearings. Remaining grease in the bearings was severely degraded. The shaft face and rear bearing journal shoulder had excessive runout.
No other significant dimensional deviations were noted.
The following actions were performed on this Renaud GP-0 spindle:
- Clean, inspect overall dimensions
- Rewind and reinstall the stator
- Kiss grind the shaft face and the rear bearing journal shoulder
- 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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Downtime is inevitable for any machine, but knowing how to reduce downtime or minimize its likelihood is critical.Read More