Pressurized fluid from the hydraulic pump rotates the motor output shaft by pushing the gears, pistons, or vanes of the hydraulic motor. Hydraulic motors can be used for direct-drive applications when sufficient torque capacity is available or via reduction gears. 

Most hydraulic motors are required to operate under reversible rev and stop conditions. Hydraulic motors often have to operate at relatively low speeds and high pressures and are subject to large temperature and speed fluctuations during normal operation. You can also buy the best hydraulic motors through https://www.athydraulics.com.au/product-category/hydraulic-motors/.

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All hydraulic piston motors are available in fixed and variable displacement versions. The most common type of hydraulic motor is the axial piston. The axial piston hydraulic motor has high volumetric efficiency. 

Hydraulic motors are also most adaptable to variable load conditions. They are available in two main designs including drive pulleys and curved shafts.

The hydraulic motor is driven by pressurized hydraulic fluid and transfers rotational kinetic energy to mechanical devices. The hydraulic motor, when driven by a mechanical source, can rotate in the opposite direction and act as a pump.

Hydraulic motors differ from pumps in that they can be designed for both directions of rotation, can have different seals to maintain high pressure at low speeds, or have different bearings to withstand high transverse loads to drive the gears, gears, or road wheels of the vehicle. 

A rotating valve that successively distributes pressure to the piston causes the output shaft to rotate in the desired direction.