A hydraulic pump includes a hydraulic motor (2) and an impeller (3). The impeller (3) produces a first axial force (Fi) into a first axial direction. The hydraulic motor (2) is a gear pump including gears with helical teeth (4a, 4b). The gear with helical teeth (4a, 4b) produces a second axial force (Ft) into a direction opposite in relation to the first axial direction. The second axial force (Ft) produced by the gear with helical teeth (4a, 4b) is utilized to compensate the first axial force (Fi).