Hitachi Seiki MK 20
- Hitachi Seiki MK 20
Hitachi Seiki MK 20
Our customer sent us this spindle because of heavy vibration and poor part finish. Two of the shafts were fretted to 50 microns below what they should have been. This caused the adjoining parts to not fit properly. This combined with worn bearings was the cause of the vibration and ultimately the poor part quality. We ground plate ground the undersized parts and rebuilt the spindle. It is now running on the machine making beautiful parts.
- Okuma Crown
Okuma Crown
Both the front and rear roller bearings in this spindle failed catastrophically. We kiss ground the face on our Kellenburger grinder, assembled the spindle with new bearings and the machine was up and running within 3 days.
- Okamoto Workhead
Okamoto Workhead
The workhead spindle is often overlooked when spindle repair is being considered. The frequency of repair is certianly much less than the wheelheads but it is crucial to have a properly functioning workhead to get to optimum performance from your machine.