Hydraulic motors convert fluid pressure into rotary motion. Pressurized fluid from the hydraulic pump turns the motor output shaft by pushing on the gears, pistons, or vanes of the hydraulic motor.
Hydraulic motors are the type of fluid power motor in which Hydraulic energy of oil is converted to mechanical energy (rotary motion and force) to perform some useful work.
The Working principle of hydraulic motor is reverse of a hydraulic pump. The hydraulic pump is connected to the directional and other valves set with a line connection. Through which it is connected to the pressure relief valve and to the reservoir. The motor consists of two triangles inscribed in a circle with its base on the circle and its apex directing towards the centre. It indicates that the hydraulic motor is bidirectional.