Chuck with additional cutting elements

A chuck for securing a working tool in a machine-tool, comprising a receiving end region having a front end surface, a bore extending from the end surface for receiving a shank of the working tool, and a plurality of threaded holes arranged around the receiving bore;

• a one-piece, ring-shaped carrier member arranged outside of the end surface of the receiving end region and parallel thereto and provided with cutting regions formed integrally therewith and having cutting elements distributed circumferentially around the receiving bore of the receiving end region, the cutting regions extending transverse to a plane defined by the ring-shaped carrier member and projecting away therefrom;
• a plurality of retaining screws which extend through openings formed in the ring-shaped carrier member and are screwed into respective threaded holes formed in the receiving end region for attaching the ring-shaped carrier member to the receiving end region;
• and a spacer an axial height of which corresponds to a distance by which the ring-shaped carrier member is spaced from the cad surface of the receiving end region, and which is supported at its opposite axial ends against the end surface of the receiving end region and against the ring-shaped carrier member, respectively.