Patent ID: 8322999

Claim:
A hydrostatic axial piston machine, comprising: a cylinder drum rotatable around an axis of rotation, wherein the cylinder drum includes cylinder bores; and a piston mounted in each cylinder bore so that the piston is longitudinally disposable, wherein the cylinder drum is axially supported on a control surface that is affixed to a casing with the cylinder drum pressed towards the control surface by a piston force that is counteracted by a hydrostatic compressive force, wherein an inlet connection and an outlet connection are provided on the control surface, wherein the cylinder bores can each be brought into communication with the control surface by a connecting channel, wherein each connecting channel is provided with a cross-section that increases from the cylinder bore toward the control surface thereby reducing a sealing web surface of the hydrostatic compressive force, wherein the connecting channel is in communication by means of a first cross-sectional area with the cylinder bore and by a second cross-sectional area with the control surface, with the second cross-sectional area being larger than the first cross-sectional area, and wherein the first cross-sectional area and the second cross-sectional area are kidney-shaped, a width of the second cross-sectional area is substantially equal to a width of the first cross-sectional area and a length of the second cross-sectional area is greater than a length of the first cross-sectional area.