A11VO Series Variable Axial Piston Pump – Models A11VO130, A11VO190, A11VO260 with LR/DR Control

The A11VO family – including the 130, 190, and 260 cc/rev displacements – offers heavy‑duty axial piston pumps for open‑circuit systems. Their swashplate design enables stepless flow modulation by adjusting piston stroke, ensuring precise power delivery across a wide operating range. These pumps are built for continuous high‑pressure duty (up to 350 bar) in mobile equipment like excavators, wheel loaders, and cranes, as well as in industrial presses and forming machines.

Two main control variants are available:A11VO260 LR (constant pressure compensation) automatically reduces displacement when the set pressure is reached, while A11VO190 DR adds load‑sensing capability to match flow exactly to actuator demand, cutting energy loss and heat generation. An optional electro‑proportional interface allows direct integration with electronic machine controls. All models share a robust housing, hardened rotating groups, and low‑noise operation, making them reliable replacements for original Rexroth main pumps. Their service‑friendly design and long component life help minimise downtime and total cost of ownership.

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Situations where fine-tuning is possible: If the equipment operates more slowly but the engine speed does not drop, the constant power point may have drifted; in this case, you can fine-tune the screws on the LR valve to match the engine power.