We received this spindle partially taken apart. After cleaning and inspecting we determined that the shaft taper had 3 microns runout and needed a kiss grind.
The front shoulder had 10 microns runout and also needed a kiss grind. We replaced the bearings, adjusted preload, balanced, assembled and test ran the spindle. The spindle was then thoroughly checked in our QC department and shipped back to the customer.
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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…