Abstract: The invention concerns a clamping device for retaining a draw-in bolt (11) on a machine table, a clamping plate, or the like, having a receptacle (10) into which the draw-in bolt (11) is insertable, and having a clamping mechanism in order to retain the draw-in bolt (11) in the receptacle (10), the clamping mechanism having a collet chuck having several clamping tongues (13) which at their one end are retained on a holding element (14) arranged in the receptacle (10), and at their free end are movable between a radially inner clamping position and an outer release position, and are lockable in the clamping position by way of a piston (5). The clamping device according to the present invention is characterized in that the holding element (14) with the clamping tongues (13) is axially displaceable, and is arranged in the receptacle (10) with radial clearance.