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
Okuma VTT-70 Spindle Repair
The Okuma VTT-70 is a twin turret vertical turning center. It comes equipped with a grease lubricated and pulley driven spindle capable of running up to 1,250 rpm.
This Okuma VTT-70 spindle arrived to our facility completely seized. Our customer indicated to us that it threw a part and crashed. Upon disassembly, we found that the #2 front bearing had a cracked inner and outer race from the spindle being crashed. Lastly, the face of the lathe taper had visible damage from the crash.
The following actions were performed on this Okuma VTT-70 spindle:
- Clean, inspect overall dimensions
- Manufacture a key
- Repair lathe face
- Manufacture a pulley nut lock washer
- Replace bearings, assembly screws, and o-rings
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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Downtime is inevitable for any machine, but knowing how to reduce downtime or minimize its likelihood is critical.Read More