Prince Hydraulic Works

An "MS series orbit motor avaiy" likely refers to an M+S Hydraulic MS Series disc valve hydraulic orbit motor, which is a low-speed, high-torque rotary actuator designed by M+S Hydraulic Plc. to convert hydraulic fluid power into mechanical rotary power. These motors are known for their high efficiency, good starting characteristics, and suitability for continuous operation in demanding conditions, featuring tapered roller bearings to handle radial loads and a hydraulically balanced disc valve for reduced losses.

An orbital hydraulic motor is a type of hydraulic motor that converts hydraulic fluid energy into mechanical rotational energy using a gerotor (gear-within-a-gear) mechanism to produce low speed and high torque output. Hydraulic fluid enters a stationary outer stator with a specific tooth form, pushing a star-shaped inner rotor with one less tooth. This interaction causes the rotor to "orbit" inside the stator, generating torque and driving an output shaft, making them ideal for heavy-duty equipment in industries like construction and agriculture.