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 MorePope CT2B Spindle Repair
CHALLENGE
This Pope CT2B spindle arrived at Northland Tool and Electronics for a full breakdown and evaluation. Upon inspection we noted that the bearings were very contaminated and failing. The front nut and cover were rusted and very worn. The rear bearing is OEM specialty and is no longer available, so we will have to convert to a different bearing design. We then measured the critical dimensions and noted that the front housing was out of round and tight. The taper was worn and has 8 microns of run out and the taper threads were nicked. Lastly, a few wire numbers were missing for the stator.
SOLUTION
The following actions were performed on this Pope CT2B spindle:
- Clean, inspect overall dimensions
- Replace bearings
- Manufacture new nut and cover
- Machine the housing and cover to accept the replacement bearing
- Kiss grind the housing and taper
- Thread file taper, some nicks will still be visible
- Send field out to number wires
RESULT
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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