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
Johnford ST80 Spindle Repair
In this spindle repair process you can see how much larger the Johnford St 80 spindle is compared to a basic spindle. In this photo we are holding a robodrill from a previous spindle repair. In comparison the Johnford St 80 is a much larger spindle. Northland Tool handles spindle repairs of all sizes.
This Johnford ST80 spindle was sent in for a full evaluation. Upon disassembly, we noted that there were metal fillings behind the front cover. This spindle was 7 years old and the oil lubrication bath had never been changed. No dimensional deviations were noted for this repair.
The following actions were performed on this Johnford ST80 spindle:
- Clean, inspect overall dimensions
- Replace 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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Running this spindle too long caused deformed ball bearings and damage to the outer race Damage to the outer race is consistent with prolonged operation after spindle exhibited initial signs of needing to be rebuilt Every spindle rebuilt by North…Read More