High-speed spindle unit for machine tools

摘要

A high-speed spindle unit for milling and drilling machines. The spindle unit has a spindle housing on the front end portion of which a terminating ring detachably mounted and a rotationally driven tool spindle which is supported in at least a front roller bearing inside the spindle housing, a ring nut being attached to the front end portion of said spindle. Between the terminating ring and the ring nut a pre-dimensioned ring-shaped gap extending in the radial direction is formed, the gap width of the gap being decreasable to zero with increasing axial load acting on the spindle.