motor. The surface that is “pushed” may be rectangular in nature, as in gear, vane and rotary abutment motors, or circular in nature as in rotary and axial piston motors.
Why they are used:
Hydraulic motors are actuators (like hydraulic cylinders) that simply convert hydraulic pressure into rotary movement. Even though the construction is similar motors differ from pumps in that they are “pushed” into rotation by the already active fluid.
Size and Ratings:
A Hydraulic motor is rated by displacement, torque, speed and pressure limits. Further, they are classified as HSLT (High speed/Low torque), LSHT (Low speed/High torque) or Limited Rotation (Torque Actuators).
