YCM Supermax Spindle Repair

We received a call from a long time customer of ours regarding the repair of this spindle. They are in the aerospace industry and due to demand on the machine they needed to get the machine up and running as soon as possible. They checked with the machine tool OEM first but a new spindle was 6 weeks away at best. We discussed the various options they had for the spindle repair and to expedite the repair they drove the spindle to us that day.

We were able to evaluate the spindle within 24 hours. A repair plan was discussed with the customer. We gave them all the available options and the resulting delivery dates. As soon as we found the best route for them we proceeded with the spindle repair.

The 50 taper had run out and wear so it was determined that a grind plate grind was needed. The drawbar also showed wear and the gripper fingers were worn. When the bearings failed it allowed the shaft to drop and the drive gear rubbed out on the rear cover.

When the shaft was finished in our grinding department and the machining work was completed the spindle went to the clean room for assembly. All the wear items were replaced and the spindle was rebuilt. It then went to our test room where it was placed on our custom test fixture to be run to full speed. We then trim balanced the spindle repair and ran it through our final QC tests.

We were able to ship the spindle to our customer in a third of the time it would have taken to get a spindle from the OEM and we did it for at least half the price.



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