Hydrostatic Positive Displacement Machine

A hydrostatic positive displacement machine, comprising:

• a housing;
• a rotor mounted in the housing so as to be rotatable about an axis of rotation, said rotor being fitted with substantially radially movable space dividers;
• and
• a cam ring having an inner circumferential surface on which the space dividers are supported,
• wherein an annular space is formed between the rotor and the cam ring, said annular space being subdivided by the space dividers into hydrostatic working spaces configured to revolve with the rotor and be brought alternately into pressure medium connection with a high pressure and a low pressure,
• wherein the cam ring has approximately diametrically arranged outer circumferential surface segments configured to guide the cam ring in translation transversely to the axis of rotation on associated inner surface segments of the housing,
• wherein at least one of the outer circumferential surface segments has a topology which deviates from that of a plane in a load-free mode of the positive displacement machine.