A hydrostatic pump (1) has a mechanical displacement volume control with a mechanical control element (4), which for generation of an actuator pressure that acts on a positioning piston (5) which is functionally connected with a displacement setting device (3), has a position-controlled control valve (6) functionally connected with a control lever (30) and with the displacement setting device (3) of the pump (1). A pump with a mechanical displacement volume control with a pressure limiting function can be accomplished by mechanically decoupling the control lever (30) from the displacement setting device (3) whereby a pressure cutoff function is provided, with which, by respective pilot valves (21a, 21b), a pressure signal can be generated from a delivery line (2a, 2b) of the pump (1), which signal is transmitted via the control valve (6) to the positioning piston (5) and counteracts the control pressure.