Eurotech Lathe Head Spindle Repair
A specialty manufacturer sent us a Eurotech spindle for repair. The spindle was seized when it arrived at our facility. Incoming inspection showed that the rear bearing failed due to contamination. The rear housing was +17 microns out of tolerance. The shaft journals were –6 and –10 microns out of tolerance. It was determined that the housing and shaft would need grind, chrome plated and finish ground to OEM specifications.
After completion of the dimensional work in our grinding department the spindle was put into assembly. The spindle was then run on our custom test stand at top speed and balanced. Vibration readings were taken and a comprehensive quality control inspection was completed. The spindle was delivered to the customer and our sales engineer reviewed the customer’s process and we recommended using the air purge option on the machine to prevent contamination from entering the spindle.
This customer was sending his spindles back to the OEM. His spindles were not lasting and the costs were high so he tried an independent spindle repair house. Unfortunately the company he tried did not work with him on the failure causes, which led to further frustration and costly spindle rebuilds.
He then met us at our booth at the Eastec show and we started working to solve his spindle problems. To date he has not had a single failure on a Northland Tool spindle repair.
Mazak QT6 Rush Spindle Repair
We received this spindle from our customer late morning on Wednesday. It was broken down and evaluated by mid afternoon on Wednesday. We spoke to our customer about the repair, what was needed and the options they had. The spindle was approved late Wednesday.
By Thursday morning the spindle had been completely cleaned and ready for assembly in our clean room. By late Thursday afternoon the spindle was assembled and running on one of our test stands.
Our customer picked up the spindle early Friday morning and their Mazak machine was making parts by days end.
This was the first spindle we had done for this customer and the repair was treated with the urgency required for the situation. If you are in need of fast turnaround times on a spindle rebuild please call one of our staff to discuss the repair. We will always do everything possible to get you up and running.
Hardinge T42 Spindle Rebuild
Grease lubrication, 5000 rpm
This spindle needed rebuilding because metal objects were caught between the back of the front flange and the front cover of the spindle. This caused damage to the front cover. We discussed the damage and the repair options with our customer and concluded that due to time and expense reworking the damaged cover was a better option for them than manufacturing new.
The rework of the front cover was completed in our machining department and the spindle was rebuilt in our clean room.