The invention relates to a hydrostatic radial piston motor, in particular a hydrostatic radial piston motor for actuating a differential cylinder. According to the invention, the hydrostatic motor in radial piston configuration comprises a control stud in a housing, the hydrostatic motor having three hydraulic working connections. The first working connection can be connected to the piston-end of a differential cylinder, while the second working connection can be connected to the rod-end of the differential cylinder. Finally, the third working connection can be connected to a tank. Owing to this arrangement, the differential cylinder can be directly operated with the aid of a single hydrostatic motor, with it being possible to forgo interposing proportional or control valves.

A hydrostatic rotating machine includes an internal element and an external element that revolve with respect to one another about an axis of rotation, a cylinder block, and a hydraulic distributor. The hydraulic distributor includes an insertion section extending axially between a section of lesser diameter and a section of greater diameter, with a first synchronization surface, and fluid distribution ducts which each have an end segment opening transversely at the first synchronization surface, and obliquely with respect to the axis of rotation. The cylinder block includes a reception section complementing the insertion section of the hydraulic distributor, and fluid diffusion ducts which each have an end segment opening transversely at the second synchronization surface, and obliquely with respect to the axis of rotation.