The A4V-DR constant pressure pump is a type of swashplate axial piston variable displacement pump from Rexroth's A4VSO series, featuring constant pressure control. It is widely applied in industrial drive fields. Below is a detailed introduction to the A4V-DR constant pressure pump:
I. Technical Features
1. Constant Pressure Control: The A4V-DR constant pressure pump incorporates a built-in constant pressure control mechanism that automatically adjusts the pump's displacement to maintain a constant output pressure. This characteristic enables the pump to operate stably under varying loads, preventing excessive or insufficient system pressure.
2. Swashplate Axial Piston Design: The pump adopts a swashplate axial piston design, offering advantages such as compact structure, high efficiency, and long service life. The pistons are arranged obliquely around the main shaft, allowing for stepless displacement adjustment by regulating the swashplate's tilt angle.
3. Open Circuit Design: The A4V-DR constant pressure pump is specifically designed for open circuit hydraulic drives, suitable for hydraulic systems requiring continuous oil supply.
4. Modular Design: The pump features a modular design, facilitating easy installation, maintenance, and upgrades. Additionally, its excellent suction performance and low noise characteristics enhance user comfort.
II. Application Scenarios
The A4V-DR constant pressure pump is extensively used in various industrial drive fields requiring constant pressure, such as:
1. Ceramic Presses: During ceramic production, presses require stable pressure to ensure the quality of ceramic products. The A4V-DR constant pressure pump provides a constant pressure output, meeting the needs of ceramic presses.
2. Refractory Presses: In refractory material production, presses also require stable pressure to ensure the density and strength of the products. The A4V-DR constant pressure pump fulfills this requirement, improving production efficiency and product quality.
3. Steel and Forging Presses: In the steel and forging industries, various forging equipment require stable pressure for metal forming. The A4V-DR constant pressure pump offers reliable pressure support, ensuring the normal operation of the equipment.
4. Metallurgical Machinery, Mining Machinery, Marine Machinery, Petroleum Equipment, Engineering and Machine Tool Control Industries: Many devices in these industries require stable hydraulic pressure to support their operation. The A4V-DR constant pressure pump is widely used in these fields due to its excellent performance and stability.
III. Technical Parameters (Example for A4VSO Series)
• Rated Pressure: 35 MPa (higher pressures available for some models)
• Peak Pressure: 45 MPa (higher pressures available for some models)
• Displacement Specifications: Various options available, including 40, 71, 125, 180, and 250 mL/rev
• Speed Range: Up to 2600 r/min, depending on the model
• Flow Range: Wide range available, depending on displacement and speed
• Control Modes: Multiple control modes available, including constant pressure control (DR), remote constant pressure control (DRG), and pressure/flow control (DFR)
