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A8VO axial piston variable displacement dual pump—an advanced hydraulic solution designed to meet the demanding requirements of modern construction machinery.
The A8VO pump integrates two axial piston units into a single compact system, sharing a common swash plate and valve plate. This design enables synchronized operation through a pressure balancer, ensuring reliable performance in closed-circuit applications such as excavators, cranes, and other heavy-duty equipment.
At its core, the pump operates by adjusting the swash plate’s tilt angle, which directly controls plunger stroke and, consequently, fluid displacement. This mechanism allows precise response to dynamic load conditions, optimizing both power utilization and operational efficiency.
A key advantage lies in its full power control system. Both pumps are regulated by a shared power controller that monitors combined system pressure. When total pressure exceeds the preset threshold, the controller automatically reduces the swash plate angle, lowering displacement to match engine output. This ensures optimal power matching and prevents engine overload.
To maintain balanced performance, the A8VO employs a hydraulic pressure balancing mechanism. This linkage guarantees equal flow distribution between the two pumps, preventing uneven loading and enhancing durability under variable working conditions.
Displacement adjustment is achieved through either hydraulic or electrical means. In hydraulic mode, pilot or system pressure actuates a control piston to adjust the swash plate angle. For more precise control, an electro-proportional solenoid can be used, enabling integration with electronic control systems for real-time responsiveness.
Engineered for closed-loop circuits, the A8VO pump supports multi-actuator synchronization—ideal for coordinating boom, arm, and travel functions in excavators. With a nominal operating pressure of 380 bar and peak capability up to 420 bar, it delivers the high-pressure performance required in intensive applications.
By combining dual-pump synergy, adaptive power regulation, and flexible control options, the A8VO offers a robust solution for manufacturers seeking improved efficiency, responsiveness, and reliability in hydraulic drive systems.












A8VO axial piston variable displacement dual pump—an advanced hydraulic solution designed to meet the demanding requirements of modern construction machinery.
The A8VO pump integrates two axial piston units into a single compact system, sharing a common swash plate and valve plate. This design enables synchronized operation through a pressure balancer, ensuring reliable performance in closed-circuit applications such as excavators, cranes, and other heavy-duty equipment.
At its core, the pump operates by adjusting the swash plate’s tilt angle, which directly controls plunger stroke and, consequently, fluid displacement. This mechanism allows precise response to dynamic load conditions, optimizing both power utilization and operational efficiency.
A key advantage lies in its full power control system. Both pumps are regulated by a shared power controller that monitors combined system pressure. When total pressure exceeds the preset threshold, the controller automatically reduces the swash plate angle, lowering displacement to match engine output. This ensures optimal power matching and prevents engine overload.
To maintain balanced performance, the A8VO employs a hydraulic pressure balancing mechanism. This linkage guarantees equal flow distribution between the two pumps, preventing uneven loading and enhancing durability under variable working conditions.
Displacement adjustment is achieved through either hydraulic or electrical means. In hydraulic mode, pilot or system pressure actuates a control piston to adjust the swash plate angle. For more precise control, an electro-proportional solenoid can be used, enabling integration with electronic control systems for real-time responsiveness.
Engineered for closed-loop circuits, the A8VO pump supports multi-actuator synchronization—ideal for coordinating boom, arm, and travel functions in excavators. With a nominal operating pressure of 380 bar and peak capability up to 420 bar, it delivers the high-pressure performance required in intensive applications.
By combining dual-pump synergy, adaptive power regulation, and flexible control options, the A8VO offers a robust solution for manufacturers seeking improved efficiency, responsiveness, and reliability in hydraulic drive systems.
















