Applications of actuating cylinders. A fluid power motor is a device that converts fluid power energy to rotary motion and force. The function of a motor is opposite that of a pump. However, the design and operation of fluid power motors are very similar to pumps. Therefore, a thorough knowledge of the pumps described in chapter 4 will help you understand the operation of fluid power motors.
Motors have many uses in fluid power systems.
In hydraulic power drives, pumps and motors are combined with suitable lines and valves to form hydraulic transmissions. The pump, commonly referred to as the A-end, is driven by some outside source, such as an electric motor. The pump delivers fluid to the motor. The motor, referred to as the B-end, is actuated by this flow, and through mechanical linkage conveys rotary motion and force to the work. Hydraulic motors are commonly used to operate the wing flaps, radomes, and radar equipment in aircraft.