Rexroth A20VLO190 Series Double Pump | A20VLO190LG1S5, A20VLO190DRS | 350 Bar Variable Pump

Rexroth A20VLO190 Series Double Self-Priming Heavy-Duty Variable Pump

Product Overview: The Rexroth A20VLO190 series is a premier double axial piston variable pump engineered for Open Circuit hydraulic systems. As an integrated dual-pump solution, it provides massive flow output through a single housing and suction port. Featuring the optimized L-specification (Self-Priming) design, the A20VLO190 maintains superior suction performance at high rotational speeds, making it the ideal power core for large mobile machinery and high-pressure industrial applications. Advanced configurations like LG1S5 power control and DRS Load Sensing ensure peak energy efficiency.

Key Technical Advantages:

• Superior Self-Priming (L Spec): The enhanced flow path structure boosts suction capability, allowing the pump to operate stably at higher speeds without a charge pump, simplifying reservoir layouts and mitigating cavitation risks.

• Precise Control Modulation (LG1S5/DRS):

  • LG1S5 Models: Feature constant power regulators with integrated pressure compensation, automatically modulating displacement to ensure optimal engine power utilization and prevent stalls.

  • DRS Models: Integrate Load Sensing (LS) and pressure compensation, modulating flow based on real-time demand to drastically reduce energy waste and system heat.

• Heavy-Duty High-Pressure Durability: Built for extreme load cycles, the A20VLO190 supports a rated pressure of 350 Bar and peak cycles up to 400 Bar. Reinforced rotating groups and swashplate supports maintain peak volumetric efficiency under continuous heavy-duty loads.

• Robust Thru-Drive Capability (K04): Equipped with superior thru-drive functionality. The K04 suffix indicates support for tandem mounting of auxiliary pumps, facilitating multi-circuit power distribution and optimizing system footprint.

Detailed Models & Technical Parameters:

• Core Models: A20VLO190 (Series 10).

• Detailed Config Codes: A20VLO190LG1S5/10R-NZD24KO4-S, A20VLO190DRS/10R-NZD24NOO.

• Displacement: 190 cm³/rev (Individual displacement for double pump units).

• Pressure Ratings: Rated at 350 Bar (35 MPa / 5100 PSI); Peak cycles up to 400 Bar (40 MPa).

• Control Methods: LG1S5 (Constant Power / Pressure Control), DRS (Load Sensing / Pressure Compensation).