Jagura AAL Spindle Repair
This customer sent their spindle in for routine maintenance. Once we received the spindle we determined that there was bearing contamination. The shaft taper was out of round, and had 100 microns of runout. The drive pulley had damage from pliers.
We replaced the bearings. The shaft taper was ground plated and reground using our Kellenberger. The shaft pulley was kiss ground as well. We adjusted the preload, balanced, assembled and broke in the spindle. It was then thoroughly checked by our QC department and shipped back to the customer.
It’s a good idea to have your spindle checked before issues appear. At Northland Tool & Electronics we offer preventative maintenance.
Jagura Spindle Repair
This customer sent in a Jagura spindle for repair as it was no longer providing them with the part finish they desired. Our evaluation found the front bearings were contaminated causing bearing failure. The tooling taper had 10 microns of run out and the pulley taper had 4 microns of run out. All these are factors contributed to the poor part finish.
We were able to kiss grind the shaft for the spindle repair on one of our Kellenburger grinders. The parts were cleaned and the spindle was assembled in our clean room. We test ran the spindle at the increased speed rating and trim balanced it. All run outs were checked and a final vibration analysis performed.
As an upgrade we recommended replacing the stock steel bearings with ceramic bearings. This allowed them to increase the spindle speed and increase the lifespan of the spindle.