The excavator swing motor, as the core actuator of hydraulic systems, directly determines equipment performance through its technical specifications. Taking the mainstream swash plate axial piston motor as an example, its operating pressure range typically spans 25-35MPa with displacement specifications covering 80-500cc/r, capable of delivering up to 3000Nm torque. The integrated cross roller bearing design enables axial load capacity exceeding 50kN, while achieving stepless rotation speed regulation from 0-12rpm. Utilizing a 9-piston symmetrical configuration, volumetric efficiency reaches over 97%, complemented by dual-channel flushing valves maintaining oil temperature below 65℃. Latest models incorporate pressure compensators and LUDV control systems, enabling demand-based flow distribution with 18% energy consumption reduction.