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-51TH2 Spindle Repair
The Miyano ABX-51TH2 is a twin spindle, 3-turret precision turning center capable of ten-axis production turning. The spindle we repaired is grease lubricated and can run up to 5,000 RPM.
This Miyano ABX-51TH2 spindle was sent in by a customer stating that they had excessive vibration and noise while running it. Upon arriving to Northland Tool and Electronics the spindle felt rough when spun by hand and the bearings sounded worn. After disassembling the spindle, it was found that bearings were heavily contaminated with an oil-based substance that had penetrated throughout the spindle. There were no dimensional deviations found on any critical surfaces (bearing journals, bearing shoulders, taper, etc).
The following actions were performed on this Miyano ABX-51TH2 spindle:
- Clean all parts of the spindle
- Replace all bolts and o-rings
- Replace bearings
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