Collet chuck with special interaction between the collet and the clamping nut

A collet chuck for clamping a tool shank, comprising:

• a chuck body, a collet and a multi-part clamping nut consisting of a clamping ring and a threaded section, which are rotatably connected to each other via rolling elements and which are apart from that connected to each other in an interlocking manner, wherein the clamping ring and the collet comprise interlocking coupling elements designed such that the collet can be inserted into the collet housing through the central opening, facing away from the chuck body, of the clamping ring held on the chuck body, while the coupling elements move past each other, and then the coupling elements can be brought into engagement with each other by rotating the clamping ring relative to the collet, so that the clamping ring can transmit the forces applied to it by the threaded section during tightening to the collet via the coupling element and can drive the collet into the chuck body, wherein the clamping ring is rotatable relative to the collet.