Abstract: A rotating liquid pump, especially a vane cell pump, which is equipped with a disc-shaped rotor which together with a housing encloses at the circumference rotating feed spaces and which is non-rotatably but axially movably retained on a drive shaft by means of a form-locking connection while the disc-shaped rotor is axially fixed between housing walls that abut end-face at the disc-shaped rotor; the form locking connection is thereby subdivided into two separate axial mounting or support areas located as close to the disc-shaped rotor end faces as possible.

Abstract: A vane-pump or motor which includes a rotor equipped with vanes slidable within at least approximately radial slots and with an endless cam surface which surrounds the rotor and together with the same forms a sickle-shaped working space; the cam surface is so shaped that it includes a radially outwardly directed inclination with respect to a circular cam concentric to the center of rotation of the rotor which forms the suction area and in other circumferential areas, it includes a radially inwardly directed inclination, forming the discharge area; two base plates are provided which axially sealingly enclose the rotor together with the vanes and the cam ring and which axially delimit the working space or spaces; internal channels connect the suction or inlet area of the working space with the feed line and the discharge area of the working space with the discharge channel; an unobstructed working medium supply is also provided out of the channel subjected to the higher pressure level which leads to the slot bo