The classification of hydraulic motor
According to its structure type, hydraulic motor can be divided into gear type, blade type, plunger type and other types. According to the rated speed, the hydraulic motor can be divided into high speed and low speed. Those whose rated speed is higher than 500r/min belong to high speed hydraulic motor, while those whose rated speed is lower than 500r/min belong to low speed hydraulic motor. The basic types of high speed hydraulic motor include gear type, screw type, blade type and axial plunger type. Their main features are high speed, small moment of inertia, easy start and stop, and high sensitivity of regulation (speed regulation and commutation). Usually, the output torque of high speed hydraulic motor is not large, so it is also called high speed small torque hydraulic motor. The basic type of low-speed hydraulic motor is radial plunger type. In addition, low-speed structure is also available in axial plunger type, blade type and gear type. The main features of low-speed hydraulic motor are large displacement, large volume and low speed (sometimes up to several revolutions per minute or even several revolutions per minute), so it can be directly connected with the working mechanism. There is no need for gear reducer to simplify the transmission mechanism. Generally, the output torque of low-speed hydraulic motor is large, so it is also called low-speed high-torque hydraulic motor.