A hob cutter arrangement includes a tool body which has a continuous axial bore, conical bore sections forming both ends of the axial bore, an end shank body at each end of the tool body, and a conical section inserted into the conical bore section. Each end shank body has a radial flange which can be placed against an end face of the tool body and a shaft section on the side of the flange opposite the conical section for clamping in a machine tool. An axle connects the end shank bodies and clamps them together. The end shank bodies are provided with blind holes opening towards the axle and provided with threads to the axle. Elastic elements are clamped between a central section of the axle and a front side of the end shank body on both sides of the axle.

A tool head for a machine tool, in particular for a gear cutting machine, has a first and a second spindle unit each having at least one spindle bearing and a spindle shaft which is rotatably mounted in the respective spindle bearing about a tool spindle axis. The respective spindle bearing can support both radial and axial forces. The spindle units are arranged coaxially to each other, and a tool is received axially between the spindle shafts. A controlled clamping device connects the spindle bearings together. A control device activates the clamping device during a machining operation and deactivates it during machining pauses. Alternatively or additionally, the tool head has an axial force element that generates an axial preload force between the spindle bearings.

A tool head for a gear cutting machine includes a first spindle unit having a first spindle shaft and a second spindle unit having a second spindle shaft. A tool is axially receivable between the first spindle shaft and the second spindle shaft. A balancing device is associated with each spindle unit. The balancing device radially surrounds the respective spindle shaft and is axially arranged between a tool-side spindle bearing of the corresponding spindle unit and the tool-side end of the corresponding spindle shaft. The tool is axially clamped between the two spindle shafts by a pull rod and a clamping element.