We received the Spindle with ceramic nose broken. The spindle was dismantled and new spindle nose was manufactured in high grade carbon steel. The same was shrink fit into the spindle housing. After that Spindle nose was ground to BT-40 taper Standards. 

The achieved runout on the spindle nose was well within 1 micron and 6 micron on the 300 mm standard test mandrel.

Spindle shaft was dynamically balanced and new bearings were replaced.