Rexroth A8VO Axial Piston Variable Double Pump: Technical Guide, Advantages and Applications
The Bosch Rexroth A8VO is a high-performance axial piston variable double pump developed for open-circuit hydrostatic drives and multi-circuit mobile hydraulic applications. With two variable axial piston rotary groups, the pump can supply two hydraulic circuits from one compact drive unit.
Its variable displacement architecture, high-pressure capability, flexible control options and engine flywheel mounting concept make the Rexroth A8VO hydraulic pump particularly relevant to excavators, cranes, drilling machines and other heavy-duty mobile equipment.
A Dual-Circuit Solution for Heavy-Duty Hydraulics
The A8VO combines two variable axial piston rotary groups in one pump assembly, allowing independent flow adjustment for separate hydraulic circuits.
Stepless Flow Control
Pump flow changes according to input speed and displacement. The variable displacement design allows hydraulic output to be adjusted according to machine demand.
Two Hydraulic Circuits
Two rotary groups can supply separate circuits, making the A8VO suitable for machines requiring coordinated multi-function hydraulic operation.
Engine Integration
The pump is designed for direct mounting on suitable diesel engine flywheel housings, supporting compact mobile machine layouts.
Rexroth A8VO Technical Parameters
The following data reflects the commonly documented Series 61/63 A8VO sizes. Actual values depend on displacement, control configuration, rotation direction and specific ordering code.
Always verify the exact technical data sheet before final system design, replacement or procurement.
Built for Multi-Circuit Mobile Machinery
The A8VO uses two axial tapered piston rotary groups in bent-axis configuration. This mechanical architecture supports two hydraulic outputs while keeping the complete pump assembly compact.
The common suction port can serve the two hydraulic circuits and the auxiliary pump configuration. Depending on the selected version, the Rexroth A8VO can also be equipped with integrated auxiliary pumping functions and power take-off arrangements.
For mobile hydraulic equipment manufacturers, this configuration can simplify packaging and provide a practical solution for machines requiring several simultaneous hydraulic functions.
Why Choose the A8VO?
The combination of variable displacement, dual-circuit operation and flexible control options makes the A8VO suitable for demanding mobile hydraulic systems.
Dual-Circuit Output
Two variable pump sections can independently supply separate hydraulic circuits for complex machine functions.
High Pressure Capability
Series 61/63 documentation specifies 350 bar nominal pressure and 400 bar peak pressure for the applicable configurations.
Flexible Controls
Different control and regulating options are available depending on the specific A8VO configuration and machine requirements.
Compact Installation
Direct mounting on suitable diesel engine flywheel housings can help reduce installation space in mobile equipment.
Auxiliary Pump Options
Certain configurations support an integrated auxiliary pump with pressure relief and optional pressure-reduction functions.
Power Take-Off
Selected A8VO versions allow power take-off arrangements for additional hydraulic pumps or auxiliary equipment.
Where Is the Rexroth A8VO Used?
The A8VO is particularly associated with mobile machines that require high hydraulic power, multiple circuits and coordinated movement functions.
Excavators
Used in multi-function excavator hydraulic systems where boom, arm, bucket and travel functions require high-flow hydraulic power.
Mobile Cranes
Suitable for hydraulic circuits used for lifting, boom control, steering and other mobile crane functions.
Drilling Equipment
Multi-circuit hydraulic drilling equipment can benefit from variable flow and independent hydraulic circuit control.
Special Mobile Machines
The pump can be considered for heavy-duty mobile hydraulic machines requiring compact high-power hydraulic drive solutions.
Designed Around High-Demand Hydraulic Functions
The exact A8VO displacement and control configuration should be selected according to engine power, hydraulic flow, pressure, machine function and installation requirements.
Control Options for Different Machine Requirements
One of the important advantages of the A8VO platform is the availability of different control and regulating concepts.
Power Control
Individual power control can help manage hydraulic power demand according to the engine and machine operating conditions.
Hydraulic Control
Hydraulic control arrangements can be configured according to the required hydraulic regulation strategy.
Electro-Hydraulic Control
Certain A8VO versions offer proportional solenoid control options for applications requiring electronic hydraulic control.
Quality Documentation Matters in B2B Procurement
For international hydraulic equipment buyers, traceability and technical documentation are important parts of the purchasing process.
Quality Management
Bosch Rexroth's quality management system is covered by ISO 9001 certification issued through TÜV SÜD certification arrangements.
Technical Traceability
Depending on the product and supply channel, technical datasheets, declarations and product-specific documents may be available.
How to Maintain an A8VO Hydraulic Pump
Correct hydraulic oil, filtration, installation and operating conditions are essential for long service life.
Hydraulic Fluid
Use hydraulic fluid that meets the required specification and viscosity range for the selected A8VO configuration.
Cleanliness
Keep the hydraulic circuit clean and use suitable filtration to minimize particle contamination.
Installation
Correct shaft alignment, suction conditions, mounting and connection of hydraulic lines are important for reliable operation.
Inspection
Monitor abnormal noise, vibration, temperature, leakage, pressure and hydraulic performance during operation.
A8VO Frequently Asked Questions
Practical answers for international buyers sourcing Rexroth A8VO axial piston variable double pumps.
What is a Rexroth A8VO pump?
The A8VO is an axial piston variable double pump with two bent-axis rotary groups designed for open-circuit hydrostatic drives and multi-circuit applications.
What displacements are available?
Common Series 61/63 sizes include approximately 55, 80, 107, 140 and 200 cm³ per rotary group. Other generations may have different sizes.
What is the A8VO pressure rating?
For the commonly documented Series 61/63 configuration, nominal pressure is 350 bar and peak pressure is 400 bar. Always confirm the exact model data.
Is A8VO suitable for excavators?
Yes. A8VO pumps are designed for multi-circuit mobile hydraulic applications and are commonly associated with excavators, cranes and drilling equipment.
Can the two pump sections work independently?
The two rotary groups generate separate flows and their displacement can be adjusted independently according to the selected configuration and control system.
Does A8VO have auxiliary pump options?
Certain A8VO configurations include an integrated auxiliary pump with pressure-relief functions and optional additional pressure-reduction equipment.
How do I choose the correct A8VO model?
Confirm displacement, control type, rotation direction, pressure, speed, mounting, auxiliary pump, port configuration and machine operating conditions before ordering.
Can an A8VO replace another hydraulic pump?
Replacement should not be based on displacement alone. Installation dimensions, shaft, ports, controls, rotation, pressure, speed and hydraulic circuit compatibility must all be checked.
A8VO: A Proven Architecture for Multi-Circuit Hydraulic Power
The Bosch Rexroth A8VO axial piston variable double pump combines two variable displacement pump sections in one compact hydraulic unit. Its high-pressure capability, flexible control options, auxiliary pump possibilities and direct engine mounting concept make it a strong solution for demanding mobile hydraulic equipment.
For overseas B2B buyers, selecting the correct A8VO model requires more than confirming the displacement. The complete configuration should be evaluated according to hydraulic pressure, flow, engine speed, control method, installation dimensions, auxiliary functions and application requirements.
Rexroth A8VO
A8VO hydraulic pump
Axial piston variable pump
Variable double pump
Open circuit hydraulic pump
Excavator hydraulic pump
Mobile hydraulic pump
Heavy-duty hydraulic system
