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
Chevalier 1418 VMC Spindle Repair
The Chevalier 1418 VMC is a compact vertical machining center equipped with a high speed spindle. The spindle is grease lubricated and capable of 15,000 rpm.
Customer sent in spindle letting us know he observed .002” tool rock, but indicated no tool runout. When the spindle arrived at Northland Tool and Electronics it was found that the shaft taper was very worn with poor contact and 10-14µ runout. Upon disassembly we found the drawbar gripper fingers were very worn and the incoming retention force was only 300lbs.
The following actions were performed on this Chevalier 1418 VMC spindle:
- Clean all parts of the spindle
- Replace all bolts, o-rings, and bellevilles
- Replace gripper fingers
- Replace bearings
- Kiss grind BT30 ID Taper
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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In this helpful guide to spindle bearing preload, Northland Tool & Electronics will answer all the basic questions about your spindle bearing preload calculations.Read More