Rexroth A11VO 145 Axial Piston Variable Pump | A11VO145LRS & A11VO145DRS

A11VO 145 Axial Piston Variable Pump (LRS / DRS Control)

Product Overview: The A11VO 145 series is one of the most balanced high-pressure swashplate axial piston pumps for open-circuit hydraulic systems. With its 145cc displacement, it is a preferred power source for medium-to-large excavators, rotary drilling rigs, and industrial power units. Featuring advanced LRS (Power Control) and DRS (Load Sensing) architectures, this series optimizes energy distribution and system response. Rated at 350 bar, it delivers powerful performance while maintaining a relatively compact footprint for versatile installation.

Key Technical Advantages:

• Sophisticated Control Options: The A11VO145DRS features Load Sensing capability, adjusting flow and pressure precisely to match actuator demand. The A11VO145LRS variant provides power control to prevent prime mover overload, enhancing overall machine efficiency.

• Heavy-Duty Engineering: Built for continuous high-pressure operation (350 bar nominal / 400 bar peak), utilizing reinforced swashplate bearings and precision-hardened pistons to ensure a long service life in demanding environments.

• Superior Suction Performance: The fluid-dynamically optimized internal paths maintain high volumetric efficiency and significantly reduce the risk of cavitation, even at higher rotational speeds common in high-cycle duties.

• Through-Drive Capability: Features a rugged through-drive shaft, allowing for the tandem mounting of auxiliary pumps to support multiple hydraulic circuits without increasing space requirements.

Specific Models and Technical Parameters: This product range includes specialized configurations such as the A11VO145LRS/11R-NZG12N00-S and A11VO145DRS/11R-NSD12N00R-S. Key specifications include a 145 cm³/rev displacement, SAE standard mounting patterns, high-performance NZG12N00 and NSD12N00R seal arrangements, and a stable working pressure range of 31.5 MPa to 35 MPa.

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