Abstract

A chuck comprising a chuck body having guide surfaces, preferably in the form of the surface area of a hollow cone, is provided. Chuck jaws having a correspondingly conical guide surface rest against the surface of the chuck body and are secured to one another by means of rubber-elastic spring elements to form a work head. At the rear end of the work head, the chuck jaws have a circumferential groove which is engaged by an annular coupling part. The coupling part is joined to a coupling sleeve which, in turn, can be coupled to the draw-in device of a machine tool. The coupling part comprises a displacement lock which, in the locking position, limits the distance of displacement of the coupling part at a place at which the contact surfaces on the coupling part and the matching contact surfaces on the chuck jaws still radially overlap one another. In the release position of the displacement lock, the coupling part can be displaced forward in the axial direction so that the contact surfaces on the chuck jaws project from the overlap with the coupling part so that the work head can be removed and exchanged for another work head having a different gripping diameter.