Abstract: A hydrostatic rotary machine includes a stator and a rotor, which are coaxial with an axis of rotation and rotatable relative to one another, a plurality of pistons linearly movably received in the rotor, and a cam track arranged on a separate cam ring in a main body of the stator surrounding the rotor. A plurality of pins are fixedly received in a respective assigned first recess in the main body, and the pins each engage in a corresponding second recess arranged radially outside on the cam ring. The cam ring has first and second end faces, which point in opposite directions with respect to the axis of rotation. The second recesses are each formed as a groove extending in the direction of the axis of rotation, and all of the grooves are open towards the first end face and open radially outward with respect to the axis of rotation.

Abstract: A hydrostatic rotary machine has coaxial inner and outer elements, one of which is a rotor and the other of which is a stator. A brake includes a plurality of first brake discs and a plurality of second brake discs arranged alternately along the axis of rotation. The first brake discs are connected rotationally fixed relative to the axis of rotation with the outer element, and the second brake discs are connected rotationally fixed relative to the axis of rotation with the inner element. A plurality of counting apertures, formed by at least one second brake disc, are arranged on the inner element distributed around the axis of rotation. A sensor is received in the outer element and is arranged opposite the counting apertures such that a rotation of the rotor results in a signal change at the sensor.

Abstract: A hydrostatic radial piston machine is useable inversely. The hydrostatic radial piston machine has a distributor in which a flushing valve, a pressure-maintaining valve connected downstream of the flushing valve, and two nonreturn valves are arranged.

Abstract: A piston unit includes a piston which has a rolling element seat configured to rotatably support a rolling element. The rolling element seat has a bearing surface with a surface coating composed of a polymer compound or with a ceramic surface coating.

Abstract: A piston unit includes a piston which has a rolling element seat configured to rotatably support a rolling element. The rolling element seat has a bearing surface with a surface coating composed of a polymer compound or with a ceramic surface coating.

Abstract: A hydrostatic radial piston machine is useable inversely. The hydrostatic radial piston machine has a distributor in which a flushing valve, a pressure-maintaining valve connected downstream of the flushing valve, and two nonreturn valves are arranged.