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Main Parameters Of Hydraulic Motor
Feb 09, 2018

1. Working pressure and rated pressure

Working pressure: input motor oil actual pressure, the size of the motor depends on the load. The difference between the motor inlet pressure and the outlet pressure is called the motor pressure difference. Rated pressure: According to the test standards, so that the motor continuous normal work pressure.

2. Displacement and flow

Displacement: Without considering the leakage, the hydraulic motor needs to enter the volume of the liquid every turn. Vm (M3/rad) Flow: Excluding leakage when the flow of the theoretical flow qmt, considering leakage flow for the actual flow QM.

3. Volumetric efficiency and rotational speed

Volumetric efficiency ΗMV: The ratio between the actual input flow and the theoretical input flow.

4. Torque and mechanical efficiency

The output power of the motor is equal to the input power. Actual torque T: Due to the actual mechanical loss of the motor resulting in loss of torque Δt, which is less than theoretical torque TT, that is, the motor's mechanical efficiency ηmm: equal to the actual motor output torque and theoretical output torque ratio.

5. Power and total efficiency

The actual input power of the motor is PQM and the actual output power is tω. Motor Total efficiency ηm: The ratio between actual output power and actual input power. There are two types of hydraulic motor circuit: Hydraulic motor series circuit and hydraulic motor brake circuit, and these two circuits can be further classified as one of the hydraulic motor series circuit: The three hydraulic motors in series with each other, with a reversing valve to control its turn and stop. Three motor through the flow is basically equal, in its displacement phase, the motor speed is basically the same, the requirements of hydraulic pump oil pressure higher, pump flow can be small, generally used for light load high-speed occasions. Hydraulic Motor Series Circuit Two: this loop each reversing valve control a motor, each motor can be operated individually, can also act simultaneously, and the motor of the steering is arbitrary.


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    Add: Jin Tai Lu Dong, Jining Jinxiang County Economic Development Zone, Shandong Province, China

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