Detailed description of A20VLO pump

The A20VLO pump is an axial piston variable displacement pump. Below is a detailed description:

First, Working Principle

The A20VLO pump operates based on the axial piston principle. During pump operation, the drive shaft rotates the cylinder block, causing the pistons to reciprocate within their respective bore holes. When the piston extends outward, the piston chamber volume increases, creating a vacuum that draws fluid through the suction port. When the piston retracts inward, the piston chamber volume decreases, compressing the fluid which is then discharged through the discharge port. This process converts mechanical energy into hydraulic energy. Additionally, the pump's displacement can be adjusted by altering the angle of the swashplate, thereby modifying the piston stroke.

Second, Product Features

1. Variable Displacement: Flexibly adjusts displacement to meet varying flow and pressure demands, enabling energy-efficient and high-performance operation. For instance, it reduces displacement and power consumption under light loads while increasing displacement to deliver sufficient pressure and flow during heavy loads.

2. High-Pressure Operation: Withstands elevated working pressures, making it suitable for applications requiring high-pressure hydraulic power and ensuring stable system performance under demanding conditions.

3. Compact Structure: Features a compact overall design with relatively small dimensions and lightweight construction, facilitating installation and integration into various equipment, particularly in applications with space constraints.

4. High Efficiency: Achieves high volumetric and mechanical efficiency, effectively converting input mechanical energy into hydraulic energy while minimizing energy loss and reducing operational costs.

Third, Common Models and Application Scenarios

1. Common Models: Common models include A20VLO190DRS/10R - NZD24N00, A20VLO190LRDH1/10R - NZD24K02, etc.

2. Application Scenarios: Widely used in construction machinery such as excavators and loaders. In excavators, it powers the movement of working components (e.g., boom, stick, bucket). Its variable flow regulation enables precise control of speed and force for different materials and operating conditions. It also powers hydraulic systems in other industrial equipment, supporting various actuators.

A20VLO Pump Maintenance Steps and Precautions

1. Fault Diagnosis: Accurately determine the cause of failure by observing the pump's operating status, measuring parameters like pressure and flow rate, and correlating these with observed malfunctions.

2. Pump Disassembly: Before disassembly, mark and record the installation positions and orientations of all components to prevent errors during reassembly. Use appropriate tools to avoid damaging parts.

3. Part Cleaning and Inspection: Thoroughly clean disassembled parts with cleaning solution. Inspect components for wear or damage to identify parts requiring repair or replacement.

4. Part Repair or Replacement: Minorly worn parts may be repaired through processes like grinding or polishing. Severely worn or damaged parts must be replaced promptly. Replacement parts should be reliable and compatible with the original pump.

5. Pump Assembly: Reassemble the pump body according to markings and correct installation sequence, ensuring all components are properly seated. Maintain cleanliness and lubrication during assembly.

6. Commissioning and Testing: After assembly, commission and test the pump. Verify parameters such as pressure, flow rate, and noise levels are within specifications. Address any abnormalities promptly through adjustment or repair.

Rexroth A20VLO hydraulic pump

Rexroth A20VLO Series Pumps