20V12A1B22R, 20V12A1A22R vane hydraulic pump installation instructions and technical parameters

1. Technical parameters

Brand: Yihe Hydraulic

Model:20V12A1B22R / 20V12A1A22R

Material: Cast iron

Drive mode: Electric

Conveying medium: oil pump

Working pressure: 172 bar

Volumetric efficiency: more than 90%

Noise level: as low as 62 dB(A)

2. Installation Instructions

①Preparation before installation

Ensure the working environment is clean and prevent dust and impurities from entering the pump body.

Check whether all parts are complete, especially key parts such as blades, rotors, oil distribution plates, etc.

When cleaning parts, use non-corrosive solvents such as kerosene, and avoid wiping with linting materials such as cotton yarn.

② Oil distribution plate and stator positioning

Use the locating pins to correctly position the oil distribution plate and the stator to ensure there is no deviation.

The blades, rotors and oil distribution plate must not be installed upside down, otherwise the pump will not work properly.

③Vane assembly

The tightness of the blades in the rotor slots should be appropriate. Too tight or too loose will affect the performance of the pump.

Pay attention to the chamfer direction of the blades to ensure that the blades fit properly against the inner surface of the stator when rotating.

④ Rotor installation

When installing the rotor, pay attention to the direction of rotation and do not install it in reverse.

For double-acting vane pumps, the rotor must rotate in the direction in which the vanes are tilted, with the top of the vanes tilted forward in the direction of rotor rotation.

For single-acting vane pumps, the top of the vane is tilted backward in the direction of rotor rotation.

⑤Assembly inspection

After assembly, rotate the driving shaft by hand to check whether it moves smoothly and without obstruction.

Make sure all fasteners are properly tightened to avoid looseness and damage to the pump body.

⑥Oil selection and filtration

Select suitable hydraulic oil, the viscosity should be between 2.5 and 5°E50.

Too high or too low oil temperature will affect the performance of the pump. The recommended operating temperature is between 10 and 50°C.

Since vane pumps are very sensitive to oil contamination, attention must be paid to good oil filtration and environmental cleanliness.

3. Use and Maintenance

Regularly check the wear of the pump body, especially the suction area on the inner surface of the stator. If necessary, turn the pump over to extend its service life.

Pay attention to the working condition of the pump. If there is abnormal noise or vibration, stop the machine and check it immediately.

Replace the hydraulic oil regularly to keep the oil clean.

In-situ repairs by replacing the pump element reduce downtime and increase productivity.

4. Conclusion

20V12A1B22R and 20V12A1A22R vane pumps have become indispensable equipment in the industrial field due to their excellent performance and wide application fields. Through correct installation and use, the stable operation of the pump can be ensured and the service life can be extended. I hope that the installation instructions and technical parameters in this article can provide a useful reference for your use and maintenance.