Abstract: The invention relates to a hydraulically actuated bar-like clamping tool with an elongated base body (1), a reciprocating elongated clamping body (2) and a tubular inflatable body (18) arranged between both said bodies for moving the clamping body. The inflatable body is secured in a fluid-tight manner at one end and is connected to a fluid connection at its other end. The base body (1) and the clamping body (2) consist each of a U-shaped section with meshing legs (9;10). A reciprocating, elongated thrust piece (15) supported on the ends of the legs of the clamping body (2) and a fixed, elongated abutment (13) are arranged between the legs (9) of the base body (1). The tubular inflatable body (18) extends on the one hand between the base body (1) and the pressure member (15) and after it is deflected it extends on the other hand between the abutment (13) and the clamping body (2). The U-shaped base body (1) has a close-off arrangement (3) at least at its end provided with the fluid connection (3a).