The invention relates to a clamping chuck (1) for a tool (6) comprising a device (9) for supplying a cooling agent and/or lubricants to a feeding channel (7) of the tool maintained by the clamping chuck (1). The inventive clamping chuck (1) comprises a sleeve (13) for coupling a feed pipe (10) for supplying a cooling agent and/or lubricants, the sleeve (13) provided with a tubular element (14) and an adjusting screw (15) which is arranged thereafter in such a way that it is displaceable with respect to the clamping chuck (1) in the direction of the longitudinal axis thereof.
