Heald 407 Spindle Repair

25,000 RPM

Our customer sent us a spindle that had front bearing failure from contamination. This spindle also had a rear journal that was -3/-5 microns undersized. We ground plate ground the rear journal. The shaft pilot had 20 microns runout. This was also ground plate ground. The pilot face had 15 microns runout. This was kiss ground. After all the grinding was completed, the spindle was balanced, assembled, broke in and sent to our QC department. The final step was shipping back to our customer.



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