A20VLO pump

The A20VLO pump is a high-performance axial piston pump manufactured by Bosch Rexroth, widely used in industrial and construction machinery applications.

First, Working Principle

It operates on the volumetric pump principle, utilizing reciprocating motion of the piston within the cylinder bore to alter the sealed volume, thereby achieving oil suction and discharge. When the piston extends outward, the sealed volume increases, creating a partial vacuum. Oil enters the pump through the suction port under atmospheric pressure. When the piston retracts inward, the sealed volume decreases, compressing the oil. The oil is then discharged from the pump through the discharge port, converting mechanical energy into hydraulic energy.

Second, Product Features

1. High Efficiency & Energy Savings: Utilizes advanced design and manufacturing processes to achieve high volumetric and mechanical efficiency, effectively reducing energy loss and lowering operating costs.

2. Variable Control Function: Automatically adjusts pump displacement based on system load demands, enabling precise control of flow and pressure to enhance system responsiveness and operational efficiency.

3. High Reliability: Key components are manufactured from premium materials and undergo rigorous quality inspections and performance testing. They exhibit excellent wear resistance, corrosion resistance, and fatigue resistance, ensuring long-term stable operation even in harsh environments.

4. Low Noise: Optimized structural design and precision manufacturing processes effectively reduce operational noise, improving the working environment.

Third, Common Models and Parameters

Common models include A20VLO190, A20VLO260, and A20VLO520, with varying displacement and pressure specifications. Taking the A20VLO190 as an example, its displacement is 190 cm³/r, maximum operating pressure reaches 300 bar, it features pneumatic drive, and is primarily constructed from cast iron.

Fourth, Application Fields

1. Industrial Sector: Widely used in hydraulic systems of industrial equipment such as machine tools, metallurgy, mining, plastic machinery, and pressure machinery, providing power support for various equipment operations.

2. Construction Machinery Sector: Suitable for excavators, loaders, cranes, concrete pump trucks, and other construction machinery, meeting their operational demands under diverse working conditions.

Fifth, Maintenance and Care

1. Regularly Replace Hydraulic Oil: The cleanliness and performance of hydraulic oil are critical for normal pump operation. Replace hydraulic oil according to specified intervals and quality requirements, and periodically clean or replace filters.

2. Inspect Seals: Wear and aging of seals can cause pump leakage, affecting performance and reliability. Regularly check seal condition and promptly replace damaged seals.

3. Maintain System Cleanliness: Prevent contaminants and moisture from entering the hydraulic system to avoid pump damage. During daily operation, ensure system cleanliness by regularly cleaning the reservoir and piping.

4. Conduct Regular Inspections and Calibrations: Periodically inspect and calibrate pump performance to ensure output parameters like pressure and flow rate meet system requirements. Address any abnormalities promptly through maintenance and corrective actions.

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Rexroth A20VLO hydraulic pump

Rexroth A20VLO Series Pumps