What does a hydraulic motor mean? ?

       Hydraulic motors can be divided into two categories according to the magnitude of output torque and the speed of rotation: one is high-speed, small-torque hydraulic motor, the speed range is generally 3000r/min or higher, and the torque is below several hundred Newton meters; The class is a low-speed, high-torque hydraulic motor, the speed is generally lower than 300r/min, and the torque is several hundred to several tens of thousands of meters. Hydraulic motors can be divided into gear type, vane type, plunger type and other types according to their structure types. According to the rated speed of the hydraulic motor, it is divided into two categories: high speed and low speed. A high-speed hydraulic motor with a rated speed higher than 500r/min is a low-speed hydraulic motor with a rated speed lower than 500r/min. The basic types of high-speed hydraulic motors are gear, screw, vane and axial piston. Their main features are high speed, low moment of inertia, easy start and brake, and high sensitivity for adjustment (speed regulation and commutation). Usually high-speed hydraulic motor output torque is not large, so it is also called high-speed small torque hydraulic motor. The basic type of low-speed hydraulic motor is radial piston type. In addition, there are low-speed structure types in axial piston type, vane type and gear type. The main features of low-speed hydraulic motor are large displacement, large volume and low rotation speed (sometimes It can reach several revolutions per minute or even a few revolutions, so it can be directly connected with the working mechanism; no deceleration device is needed, which greatly simplifies the transmission mechanism. Generally, the output torque of the low-speed hydraulic motor is large, so it is also called low-speed large torque. Hydraulic motor.