A4VG140 pump

2 year ago

14 0 

4 year

Product details

The A4VG140 pump is a swashplate axial piston variable displacement pump primarily used for hydrostatic transmissions in closed circuits. Here are the detailed contents regarding the A4VG140 pump:

1. Structural Characteristics:

• It features a swashplate structure, enabling variable displacement functionality.

• The nominal pressure is 400 bar, with a peak pressure reachable up to 450 bar.

2. Operating Mode:

• It is specifically designed for closed circuits, suitable for hydrostatic transmission systems.

3. Performance Parameters:

• Displacement: 140 (specific units may vary depending on different models).

• Flow rate is directly proportional to the driving speed and displacement, achieving stepless variation.

• Flow rate increases from zero to its peak as the swashplate angle varies.

4. Control Functions:

• Equipped with electrical control devices for easy automation.

• Comes with solenoid valves for switching and pressure cutoff valves, as well as a zero-position switch, providing multiple protections.

5. Application Advantages:

• Easily matches various control and regulation systems, offering multiple variable displacement modes.

• Equipped with two relief valves on the high-pressure oil side to protect the hydrostatic transmission (pump and motor) from overload.

• An internal auxiliary pump serves as a charge pump and control pump, with the charging pressure limited by an internal charging relief valve.

6. Usage and Maintenance:

• To ensure long-term stable operation of the pump, hydraulic oil should be replaced regularly (typically after 1000~3000 hours of operation or six months).

• During use, attention should be paid to checking the pump's operating pressure, temperature, and vibration, promptly detecting and addressing any abnormalities.

The A4VG140 pump plays a significant role in fields such as engineering machinery and construction machinery due to its superior performance and wide range of applications.

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