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 MoreGMN TS80X142 Spindle Repair
Northland Tool & Electronics repairs several of this type of spindle every month for our customers. We incorporate our Kellenburger universal grinders into the repair process to ensure the tooling contact on the face and taper is to specification. Our process gives you the best run out and lengthens the life of your spindle compared to some rebuilders who grind in assembly under less than perfect conditions. Northland Tool has invested in the proper tooling and equipment to make sure your repair exceeds your expectations.
CHALLENGE
This GMN TS80X142 was sent to us to be fully rebuilt. The first thing we did was complete a full breakdown and evaluation. Upon close inspection, we noted that the front shaft nut was loose and caused bearings to lose preload. We then measured the critical dimensions (bearing journals, housing, taper, etc.) and found a few issues. First, the front housing was +6/+10 egged (ISO is +/- 6.5). Second, the rear housing was +8/+13 egged (ISO is +/-6.5). Lastly, the tapers had significant run out. No other dimensional deviations were noted for this repair.
SOLUTION
The following actions were performed on this GMN TS80X142 spindle:
- Clean, inspect overall dimensions
- Replace bearings, o-rings, and assembly screws
- Grind, chrome plate, and finish grind the housing
- Kiss grind both tapers
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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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.
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