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
Mori Seiki MV40 Spindle Repair
The Mori Seiki MV40 is a CNC vertical machining center. It can be fitted with a spindle like this one that is oil mist lubricated, stator driven, and capable of running up to 12,000 rpm.
This Mori Seiki MV40 spindle was sent in for a full breakdown and evaluation. Upon disassembly and inspection, we noted that there was damage to the shaft taper, 1 broken drive dog, and 1 missing drive dog. The coolant plungers for the taper were worn and will need to be replaced. The taper face had a crack and was bellmouthed and the front and rear journals were undersized. Lastly, the taper nose rubbed out on the front cover. No other dimensional deviations were noted for this repair.
The following actions were performed on this Mori Seiki MV40 spindle:
- Clean, inspect overall dimensions.
- Replace bearings, drive dogs and coolant plungers.
- Machine taper bellmouth and crack and then grind, chrome plate, and finish grind
- Grind, chrome plate, and finish grind the front and rear shaft journals
- Kiss grind front cover
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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More Case Studies
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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Downtime is inevitable for any machine, but knowing how to reduce downtime or minimize its likelihood is critical.Read More