Hydraulic swing motor

The invention discloses a hydraulic swing motor, which comprises a shell, two end covers, a central rotating shaft and an oil duct group, the two end covers are arranged on the two sides of the shell respectively. The central rotating shaft penetrates through the shell and the two end covers, the central rotating shaft, the two end covers and the shell are in sealed connection, an inner cavity of the shell is divided into a sealed upper end cavity and a sealed lower end cavity by the central rotating shaft, and two sealed small oil cavities are formed by the two end covers and the central rotating shaft; and the oil duct group is communicated with the upper end cavity, the lower end cavity and the two small oil cavities, and when the hydraulic swing motor works, the hydraulic oil contained in the two small oil cavities is guided to the upper end cavity or the lower end cavity through the oil duct group. 本发明公开了一种液压摆动马达，包含：壳体、二个端盖、中心旋转轴及油道组；二个端盖分别装设于壳体的两侧；中心旋转轴，穿设于壳体及二个端盖，且中心旋转轴、二个端盖及壳体间为密封连接，中心旋转轴将壳体的内腔分为密封的上端