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
GMN HSP-170SG22000/4 Spindle Repair
This GMN HSP-170SG22000/4 spindle is a high speed grinding spindle. This specific spindle is grease lubricated, stator driven, and capable of running up to 20,000 rpm.
This GMN HSP-170SG22000/4 spindle arrived at Northland Tool and Electronics completely seized. Once the rear cover was removed, rusty water spilled out of the housing. Upon inspection, the spindle motor’s field was cracked in many locations and would need to be replaced. The rear bearing shoulder had high runout and will need to be kiss gound to be corrected. Lastly, the ball cage post and housing had slight score marks. This can be fixed in assembly as it functions properly. No other dimensional deviations were noted for this repair.
The following actions were performed on this GMN HSP-170SG22000/4 spindle:
- Clean, inspect overall dimensions
- Replace bearings, o-rings, and assembly screws
- Kiss grind the rear bearing shoulder
- Replace field
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