1. Hydraulic Motor: Used to refer to the output rotation movement, the hydraulic pump provided by the hydraulic energy conversion device to the mechanical energies.
2. High speed Motor: the gear motor has the advantages of small volume, light weight, simple structure, good workmanship, not sensitive to oil pollution, impact resistance and small inertia.
Disadvantages are large torque pulsation, low efficiency, small starting torque (only for rated torque 60%--70%) and low speed stability.
3. The blade motor is a hydraulic motor which is in contact with the shell body (stator ring) in the rotor groove and rotates the rotor under the flowing liquid. Compared with other types of motor, vane motor has the advantages of compact structure, small profile size, low noise, long life and so on, its inertia is smaller than the plunger motor, but the resistance to pollution is worse than the gear motor, and the rotational speed is not too high, generally in the following 200r/min work.
Because of the large leakage, the vane motor is unstable when the load changes or at low speed.
4. Radial column piston: Has the good reverse characteristic, causes the motor operation to be absolutely tranquil, applies to the servo system. Can be used as a motor or pump two-way work.