Hydraulic actuatable pressing device, method for performing pressing, method for producing an electrically conductive press-fit connection, electrically conductive pressed compression sleeve, method for clamping a workpiece and hydraulic device

The present invention discloses a hydraulic actuatable pressing device, a method for performing pressing, a method for producing an electrically conductive press-fit connection, an electrically conductive pressed compression sleeve, a method for clamping a workpiece and a hydraulic device. The invention relates firstly to a hydraulically actuatable pressing device (1), preferably designed as a handle device, with a hydraulic piston (20,22) which can move in a hydraulic cylinder against the force of a restoring spring (21,23), the piston being connected to a pressing part (24,27) for performing pressing, wherein the hydraulic piston (20,22) has an impingement face for generating pressing force by the action of hydraulic means under pressure. In order to enable the pressing device, having a simple structure, reliably and without the necessity for modifications of the tool to press comparatively large and comparatively small workpieces, particularly cable shoes, said hydraulic piston (20,22) consists of a first and a second partial piston (20,22) with a first and second partial impingement face, the partial impingement faces can be impinged upon by the hydraulic means having an identical hydraulic pressure, and the two partial pistons (20,22) are connected to a first or a second pressing unit, respectively. The invention further relates to additional pressing device, particularly hydraulic pressing devices and to various methods.