We received the MORISEIKI BT-40 Spindle with cracked ceramic nose. The spindle runout was unmeasurable due to completely broken ceramic insert. Bearings were not to be replaced.

The spindle was dismantled and all the components were cleaned. New insert type nose with hardened alloy steel was manufactured and shrink fitted in to the Spindle shaft.

Ground the spindle nose within the accuracy of 1 micron. All the rotating components were dynamically balanced. Then Spindle was re-assembled. Checked the runout which was 1 micron on the spindle nose and 10 micron on a test mandrel of 300 mm length.