Abstract: A method for regulating the speed of a clamping and lifting device (1) with at least one guide cylinder (2). A hydraulic fluid can flow in and out through in each case one opening in at least two cylinder chambers of the at least one guide cylinder (2) via at least one pump device and via at least one valve device per cylinder chamber for lifting and lowering loads (16). The degree of opening of the valve of the at least one valve device in each case can be changed as a function of the working direction of the device (1), a setpoint speed (10) and the current speed (11) of the at least one guide cylinder (2).

Abstract: A method for regulating the speed of a clamping and lifting device (1) with at least one guide cylinder (2). A hydraulic fluid can flow in and out through in each case one opening in at least two cylinder chambers of the at least one guide cylinder (2) via at least one pump device and via at least one valve device per cylinder chamber for lifting and lowering loads (16). The degree of opening of the valve of the at least one valve device in each case can be changed as a function of the working direction of the device (1), a setpoint speed (10) and the current speed (11) of the at least one guide cylinder (2).

Abstract: A pump housing, in particular a vane cell pump housing, having a suction connection point, from which a suction channel emerges which opens with a suction-channel opening into a receiving chamber in the pump housing, and having a pressure connection point, from which a pressure channel emerges which opens at a pressure-channel opening into the receiving chamber. The invention is distinguished by the fact that the suction connection point, the pressure connection point, the suction-channel opening and/or the pressure-channel opening are/is arranged in such a way that a minimum level of a conveying fluid which is present in the receiving chamber is not undershot in different installation situations.

Abstract: A pump housing, in particular a vane cell pump housing, having a suction connection point, from which a suction channel emerges which opens with a suction-channel opening into a receiving chamber in the pump housing, and having a pressure connection point, from which a pressure channel emerges which opens at a pressure-channel opening into the receiving chamber. The invention is distinguished by the fact that the suction connection point, the pressure connection point, the suction-channel opening and/or the pressure-channel opening are/is arranged in such a way that a minimum level of a conveying fluid which is present in the receiving chamber is not undershot in different installation situations.

Abstract: A pump, in particular a sliding-vane pump, a roller cell pump, or a gear pump includes a rotating assembly, with, amongst other things, a rotor with radially-sliding vanes, rollers or gears and a drive shaft is provided. The rotor or a gearwheel is connected to the drive shaft by a toothing on the drive shaft and on the rotor or gearwheel for rotational drive.

Abstract: A pump, in particular a sliding-vane pump, a roller cell pump, or a gear pump includes a rotating assembly, with, amongst other things, a rotor with radially-sliding vanes, rollers or gears and a drive shaft is provided. The rotor or a gearwheel is connected to the drive shaft by a toothing on the drive shaft and on the rotor gearwheel for rotational drive.