A4VG
2 month ago
Product details
A4VG Hydraulic Piston Pump
The A4VG Hydraulic Piston Pump is a high-performance hydraulic component widely used in various engineering machinery and hydraulic systems. Below is a detailed introduction to the A4VG Hydraulic Piston Pump:
I. Product Features
1. Swashplate Axial Piston Variable Closed Pump
• The A4VG pump adopts a swashplate axial piston structure with variable displacement capabilities, allowing for adjustment of output flow based on actual needs.
• The closed structure stabilizes the internal pressure of the pump body, reducing leakage and energy loss.
2. Adjustable Output Flow
• The output flow varies proportionally with the swashplate angle, ranging continuously from 0 to the maximum value.
• The direction of fluid flow can smoothly change as the swashplate crosses the zero position, meeting the demands of complex operating conditions.
3. Multiple Control Forms
• The A4VG pump offers multiple control forms, such as HW manual control, EP electronic proportional control, and HD hydraulic control, catering to different application scenarios.
• The variety of control options has made the A4VG pump widely used in engineering machinery, agricultural machinery, construction machinery, and other fields.
4. Safety Protection
• Safety valves are installed at both the A and B high-pressure ports for system protection.
• These safety valves also integrate a charge valve function, preventing system cavitation by replenishing oil.
5. Standard Configuration
• A pressure cut-off valve is standard, limiting the system's working pressure to protect against excessive pressure damage.
• A charge relief valve limits the maximum charge pressure, ensuring stable system operation.
II. Structural Composition
The A4VG Hydraulic Piston Pump mainly consists of the following parts:
1. Rotating Body Part: Including the main shaft, cylinder block, pistons, valve plate, return disk, return balls, etc.
2. Swashplate Part: Including the swashplate, semicircular track, semicircular bearing, etc.
3. Housing: Protects the internal parts of the pump from external damage.
4. Rear Cover: Integrates key components such as safety valves, cut-off valves, and charge relief valves.
5. Charge Pump: Installed on the rear cover, it replenishes system leakage oil, improves pump suction conditions, and provides a constant pressure control oil source for the variable control mechanism.
6. Control Part: Includes the variable piston, control valve, etc., for realizing pump displacement control.
III. Operating Principle
The operating principle of the A4VG Hydraulic Piston Pump is based on the working principle of a swashplate axial piston pump. By changing the swashplate angle, the pump's displacement is adjusted, thereby altering the output flow. The size of the control oil is related to the control signal (electric, hydraulic, manual signal, etc.). The cut-off valve on the pump limits the working pressure of the pump, while the safety valve provides system safety protection.
IV. Application Fields
The A4VG Hydraulic Piston Pump, with its high performance and multiple control forms, is widely used in engineering machinery, agricultural machinery, construction machinery, and other fields. It particularly excels in applications requiring stepless speed regulation, a wide speed regulation range, low system heating, constant torque or constant power speed regulation, and high transmission efficiency.
V. Maintenance and Servicing
To ensure the long-term stable operation of the A4VG Hydraulic Piston Pump, regular maintenance and servicing are required. This includes checking the wear of internal pump parts, replacing worn parts, cleaning the pump interior, and checking and adjusting the swashplate angle. Additionally, hydraulic oil should be regularly changed to ensure system cleanliness and hydraulic oil quality meet requirements.
In summary, the A4VG Hydraulic Piston Pump plays an important role in the field of hydraulic systems due to its unique structure and superior performance. By selecting appropriate control forms and implementing maintenance and servicing measures, its long-term stable operation and satisfaction of various application needs can be ensured.
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Ningbo Hengnuo Hydraulic Drive Co.,Ltd
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3 year
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hydraulic motor,
gear box ,
hydraulic pump,
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