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
Miyano ABX Spindle Repair
The Miyano ABX series is a CNC turning center. It can come equipped with a grease lubricated and pulley driven spindle that is capable of running up to 5,000 rpm.
Our customer sent us this spindle because it was making out of spec parts. It was leaving chatter marks on the work piece. Upon inspection, we noted that the pulley tapered shaft journal had light scoring. The drive pulley had fretting and light scoring as well. Lastly, the bearings were worn and there was shaft nut damage. No other dimensional deviations were noted.
The following actions were performed on this Miyano ABX spindle:
- Clean, inspect overall dimensions
- Replace bearings, o-rings, shaft nut, and assembly screws
- Manufacture a new pulley
- Grind, chrome plate, and finish grind the pulley taper on shaft
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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