| 摘要 |
<p>A rotary tool body has a central bore for receiving a support and drive shaft. At least one sleeve in the central bore surrounding the shaft is sealed at the ends in the bore and between the sealed ends includes at least one radially deformable axial region. Passages in the tool body provide for the supply of flowable pressure medium to the central bore around the deformable axial region to deform the axial region radially into engagement with the shaft and for the release of the pressure medium from the central bore.</p> |
