In a hydraulic vane motor having at least two working chambers (13, 14) and having flow in both directions, sealing strips (12), in a way that is known per se, are arranged loose in the respective vane slots (11) and are spring-loaded from the vane (11) towards the pathway (15). Each working chamber (13, 14) is provided with at least four ports (16a, 16b) in the pathway (15). In addition to the ports, grooves (20, 21, 22) are advantageously arranged parallel to the ports.