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.
Smith Renaud BA-0025 Spindle Repair
Northland Tool & Electronics has been rebuilding these Smith Renaud spindles for our customer for over 15 years. When we first started our repair program with them we would get 2 to 4 spindles to repair per month. We worked closely with them to eliminate main causes of failure. As you can see in the picture we added an air purge system to the front and rear of the spindle along with making changes to the labrynth systems. We also reconditioned the shaft and housing journal fits to bring them back to OEM specifications.
15 years later we receive 1 spindle every 2 to 3 years from them to repair. We have earned a customer for life and they have saved countless dollars in spindle repair and increased output due to less machine downtime and better part quality.