Patent ID: 8439369

Claim:
A tool holder of the shrink-fit chuck type, comprising: a receiving section for holding a shank of a rotary tool coaxially with respect to an axis of rotation of the tool holder, the receiving section including a radially elastic bush section forming a receiving opening for the shank of the rotary tool and a sleeve section surrounding the bush section, the sleeve section and the bush section being arranged coaxially with one another with respect to the axis of rotation, the receiving opening defined by an inner circumferential surface of the bush section which forms a clamping surface for transmitting radial press-fit forces exerted by the sleeve section on the bush section and via the bush section on the shank of the rotary tool, wherein the bush section has a conical outer surface and the sleeve section has a conical inner surface adapted to bear against the conical outer surface when clamping the shank of the rotary tool, the conical outer surface and the conical inner surface narrowing toward an end face of the sleeve section in the direction of the axis of rotation, wherein the bush section is axially supported against the tool holder at a side of the bush section axially remote of the end face of the sleeve section in a predefined axial position with respect to the tool holder and the sleeve section is fixedly connected to the tool holder at a side of the sleeve section axially remote of the end face such that the conical inner surface of the sleeve section is axially displaceable by heating with respect to the conical outer surface of the bush section into a release position releasing the bush section for insertion or removal of the shank or by cooling into a clamping position for exerting radial press-fit forces on the shank via the bush section.