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 MoreVoumard VMX-7.5 Spindle Repair
Our customer started having poor part finish while grinding with this spindle. The first signs of trouble were part chatter that eventually turned into parts being out of specifications dimensionally. The pilot for the tooling interface had worn over time allowing movement of the quill and grinding stone.
CHALLENGE
This Voumard VMX-7.5 spindle felt rough when spun by hand incoming. The run out on the pilot was 2 face/4 pilot.
The customer supplied quill measured 32mm -3/-15t plane 1, -4/-15t plane 2 (-15 is just in front of the thread’s). Lastly the shaft pilot measured 32mm +7/+20t plane 1, +7/+20t plane 2 (+20 is at the mouth of pilot). The customer requested a new power cord be put on as well.
SOLUTION
The following actions were performed on this Voumard VMX-7.5 spindle:
- Clean, inspect overall dimensions
- Replace bearings, o-rings, and power cord
- Grind, chrome plate, and finish grind the shaft pilot
RESULT
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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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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