Rexroth A11VO190LG2S Variable Pump | A11VO130 A11VO190 | 11 Series

LIC Hydraulic provides the Rexroth A11VO Series, a high-pressure axial piston variable pump engineered for the most demanding open-circuit applications. With its robust swashplate design and superior power density, the A11VO series is the industry standard for mobile and industrial heavy-duty machinery. The featured model, A11VO190LG2S/11L-NZD12N00, incorporates advanced LG2S control logic, combining power limiting with load-sensing capabilities to maximize fuel efficiency and machine productivity. Rated for continuous pressures up to 350 bar (5075 PSI), the A11VO190 ensures reliable performance under the harshest operating conditions.

Technical Highlights

• Heavy-Duty Performance: Rated for 350 bar continuous and 400 bar intermittent pressure, ideal for high-stress cyclical work.

• Integrated Control Logic: The LG2S compensator manages power consumption and flow demand simultaneously, preventing engine stall and reducing heat generation.

• Through-Drive Capability: Allows for additional pumps to be mounted directly to the rear of the unit, supporting 100% torque transfer for multi-circuit systems.

• Exceptional Service Life: Built with premium rotating groups and reinforced housings to withstand the vibrations and loads of construction and mining environments.

Application Areas

• Construction: Main pumps for concrete boom pumps, rotary drilling rigs, and crawler cranes.

• Industrial: Power source for high-pressure scrap shears, balers, and forging presses.

• Mining: Reliable hydraulic supply for tunneling machines and heavy transporters.

Expert Maintenance Tips

• Mandatory Priming: To avoid immediate mechanical failure, the pump case must be pre-filled with filtered hydraulic oil through the drain port before the initial startup.

• Filtration Integrity: High-pressure systems are “dirt-sensitive.” Maintain fluid cleanliness at ISO 18/16/13 to ensure the longevity of the valve plate and piston group.

• Monitor Case Drain Pressure: Keep backpressure below 2 bar to protect the high-pressure shaft seal and maintain compensator accuracy.