Hardinge Lathe LC-1220
Our customer sent us this Hardinge spindle repair because it started to make noise and they knew failure was not far away. We disassembled the spindle and found contamination in the bearings from normal usage. We also found that the collet locating surface had 5 microns run out, the face had 4 microns run out and the od had 5 microns of run out. The front and rear nuts had been damaged and needed repair. We also manufactured a new spacer for the pulley. All the parts were cleaned and the spindle was assembled in our clean room.
During the final test run the spindle was out of our allowable tolerance for balance. We requested a draw tube and collet from our customer so that we could balance the entire assembly as a unit. Once the spindle was run with the additional parts only a small amount of trim balancing was necessary.
Toshiba BP130 Spindle Repair
We supply bearings for this customer that they keep in stock for this Toshiba Boring Mill. When they perform a machine refurbishment we are able to rebuild the spindle assembly in just a few days. This limits the machine downtime to less than a week and allows them to keep the flow of work through this department at a steady rate. They will call us when they are ready to recondition the next machine and Northland Tool reserves time in our assembly department for exclusively for them. As this is such a key piece of equipment for them we are on call during the process 24 hours a day to answer any questions their personnel may have.