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As a premier manufacturer and dedicated supplier of advanced fluid power solutions, we introduce this high-performance axial piston variable displacement pump. Engineered specifically for demanding hydrostatic closed-circuit architectures, this unit delivers uncompromising power density and precise fluid control for industrial procurement needs.
Stepless displacement adjustment driven by a robust swash plate design.
Exceptional volumetric efficiency exceeding 95% for optimal energy utilization.
Engineered to sustain a nominal pressure of 300 bar, peaking up to 400 bar.
Perfectly suited for heavy-duty construction machinery and industrial applications.
The A10VG series axial piston variable displacement pump is a masterclass in fluid engineering, meticulously crafted to serve as the beating heart of complex hydrostatic closed-circuit transmissions. When you run your hands over the heavy-duty cast-iron housing, the precision-machined finish and substantial weight immediately convey a sense of rugged durability, built to withstand the relentless physical demands of high-pressure industrial environments. Inside this formidable exterior, the pump operates with an incredibly refined acoustic profile. Instead of the harsh, metallic grinding often associated with heavy hydraulic machinery, this unit produces a smooth, muted hum, a testament to the perfectly balanced internal plunger cylinder and variable piston mechanism. The transition of fluid through its meticulously sealed chambers is seamless, ensuring that every drop of hydraulic oil is utilized with maximum efficacy.
At the core of its operation lies an advanced inclined disc mechanism. In its resting state, a high-tension spring firmly holds the swash plate at its maximum tilt, guaranteeing that the pump delivers full fluid displacement the exact millisecond the system powers up. As the hydraulic pressure builds and approaches the critical preset threshold—carefully regulated by the integrated control valve group—the system reacts with fluid grace. The control valves actuate the variable piston, smoothly reducing the swash plate angle to stabilize the pressure without causing sudden, jarring mechanical shocks. This dynamic, real-time compensation not only ensures an unwavering flow rate but also drastically reduces thermal buildup and wasted energy, keeping your vital machinery running cool, efficient, and responsive under the most unpredictable load fluctuations.
| Product Name | Rexroth A10VG High Pressure Variable Axial Piston Pump |
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| Design Type | Swash plate design |
| Operation Mode | Hydrostatic closed circuit |
| Sizes (Displacement) | 18, 28, 45, 63 cm³ |
| Nominal Pressure | 300 bar |
| Maximum Pressure | 350 bar - 400 bar |
| Volumetric Efficiency | > 95% |
| Preset Pressure Threshold | 14–22 bar (via DR pressure control valve) |
| Core Control Valves | DR pressure control valve, FR dynamic flow regulation valve |
| Core Components | Plunger cylinder, swash plate, variable piston, integrated control valve group, built-in boost pump |
| Main Applications | Construction machinery, machine tools, industrial hydraulic systems |
Deploying this advanced hydraulic pump transforms the operational capabilities of your machinery, directly addressing the critical need for reliability and precision in heavy-duty applications. By integrating this component, equipment operators experience an immediate upgrade in machine responsiveness and a significant drop in parasitic energy losses.
Unwavering Output Stability: The meticulously engineered internal geometry ensures that fluid delivery remains constant, eliminating the erratic pressure spikes that can damage downstream components.
Acoustic and Vibrational Refinement: Designed with internal damping structures, the pump operates with minimal vibration, reducing operator fatigue and protecting sensitive surrounding electronics from mechanical resonance.
Thermal Efficiency: The optimized fluid pathways minimize internal friction, ensuring the hydraulic oil remains at an optimal temperature even during prolonged, high-intensity duty cycles.
Streamlined Integration: The compact footprint and standardized port configurations allow engineers to seamlessly upgrade existing power units without requiring extensive structural modifications to the machine chassis.
Maximizing energy utilization is paramount for modern industrial operations, and this pump delivers unparalleled performance metrics to meet those exact demands. The sophisticated swash plate design allows for stepless displacement adjustment, ensuring that the pump only delivers the exact amount of fluid required by the load, effectively eliminating energy waste.
Exceptional Volumetric Efficiency: Operating at over 95% efficiency, this unit ensures that nearly all mechanical input is converted directly into usable hydraulic power, significantly lowering fuel or electricity consumption for the prime mover.
Constant Power Characteristics: In high-pressure ranges, the pump maintains a constant power output. The innovative dual-spring mechanism steepens the pressure-flow curve, optimizing the torque-to-speed ratio perfectly.
Dynamic Load Adaptation: As operational demands shift, the internal mechanisms instantly adapt, providing maximum torque during heavy digging or lifting, and high speed during transit phases without manual intervention.
Equipment downtime due to hydraulic failure is a major concern for heavy machinery operators. This pump is fortified with comprehensive safety mechanisms designed to protect both the unit itself and the broader closed-circuit system from catastrophic overloads.
Dual High-Pressure Relief Valves: Integrated directly into the high-pressure side, these highly responsive valves instantly vent excess fluid if pressure spikes occur, safeguarding both the pump and connected hydraulic motors from structural rupture.
Built-in Boost Pressure Relief: A dedicated relief valve limits the maximum boost pressure, preventing internal seal blowouts and ensuring the auxiliary circuits operate within strict safety margins.
Extended Equipment Lifespan: By actively preventing pressure surges and maintaining strict operational limits, these integrated protections drastically reduce the wear and tear on hoses, fittings, and actuators across the entire machine.
In complex industrial tasks, the difference between success and failure often comes down to the millimeter-level precision of the machinery. This pump features a highly sophisticated control architecture that translates operator inputs into smooth, predictable mechanical motion.
Synergistic Valve Operation: The DR pressure control valve (with a precise 14-22 bar activation threshold) works in perfect concert with the FR dynamic flow regulation valve to maintain an incredibly stable pressure differential across the system.
Real-Time Swash Plate Adjustment: As external loads fluctuate, the control system instantaneously recalculates and adjusts the swash plate angle, ensuring the actuator speed remains constant regardless of the resistance encountered.
Anti-Oscillation Damping: Specially engineered integrated damping orifices smooth out the control signals, preventing the hydraulic juddering or oscillation that can occur during rapid joystick movements, resulting in remarkably fluid machine operation.
No two industrial machines are exactly alike, which is why flexibility in component selection is critical. This pump is engineered around a highly modular philosophy, allowing it to be tailored to a vast array of specific engineering requirements without the need for custom manufacturing.
Comprehensive Size Range: Available in precise displacement sizes of 18, 28, 45, and 63 cm³, ensuring an exact match for the specific flow requirements of your power unit.
Versatile Control Modules: The pump supports a wide spectrum of control options, including Hydraulic (HD), Mechanical (MD, HW), Direct (DG), Speed-related (DA), and Electrical (EP) modules, allowing seamless integration into any existing control architecture.
Simplified Retrofitting: The standardized mounting flanges and modular control blocks mean that upgrading older equipment with this modern, high-efficiency pump is a straightforward process, minimizing engineering overhead and installation time.
Construction sites and continuous-process industrial plants offer no mercy to fragile components. This pump is forged to thrive in the most unforgiving environments, ensuring continuous operation where lesser pumps would quickly degrade and fail.
Exceptional Cavitation Resistance: The internal geometry is optimized to maintain fluid integrity even under suboptimal suction conditions, preventing the destructive micro-explosions of cavitation that pit and destroy internal metal surfaces.
Smooth Flow Reversal: When the swash plate crosses the neutral position to reverse the machine's direction, the transition is engineered to be incredibly smooth, eliminating the harsh hydraulic shocks that normally fatigue structural mounts.
Contamination Tolerance: While clean fluid is always ideal, the robust internal metallurgy and advanced surface treatments provide a high degree of resilience against the microscopic particulate wear typical of harsh, dusty job sites.
Beyond raw performance, the true value of a hydraulic component lies in how easily it can be installed, maintained, and serviced over its operational life. This pump incorporates intelligent design features that drastically reduce the burden on your maintenance teams.
Integrated Boost Pump: The built-in boost pump serves a dual purpose, acting as both the primary charge pump for the closed circuit and the control oil supply. This eliminates the need for a separate, externally mounted auxiliary pump.
Simplified Piping Architecture: By integrating the charge pressure relief, high-pressure relief, and boost pump into a single compact housing, the external plumbing required is significantly reduced, lowering the risk of external leaks and simplifying the overall machine layout.
Accessible Service Points: Routine diagnostic checks and pressure adjustments are made simple with strategically placed, easily accessible test ports, allowing technicians to verify system health without dismantling the surrounding machinery.
Selecting the right manufacturing partner is just as critical as selecting the right component. We bring decades of specialized engineering expertise and a relentless commitment to quality to every unit that leaves our facility, ensuring your supply chain remains robust and reliable.
Direct Manufacturer Accountability: By sourcing directly from the production origin, you benefit from uncompromised quality control, transparent communication, and highly competitive volume pricing without intermediary markups.
Rigorous Quality Assurance: Every single pump undergoes exhaustive end-of-line testing on advanced dynamometers, simulating extreme real-world loads to guarantee it meets the strict >95% efficiency and 400 bar peak pressure specifications.
Global Supply Reliability: Our optimized inventory management and streamlined logistics networks ensure that whether you need a single prototype for R&D or continuous volume deliveries for a major production line, your components arrive on schedule.
Dedicated Engineering Support: Our team of seasoned hydraulic specialists is available to assist with system integration, custom control module configurations, and troubleshooting, acting as an extension of your own engineering department.
To assist your engineering and procurement teams in making an informed decision, we have compiled detailed answers to the most critical technical inquiries regarding the application and operation of this axial piston pump.
How does the integrated boost pump specifically enhance the performance of the closed-circuit system?
The built-in boost pump continuously replenishes the closed loop with cool, filtered hydraulic fluid, compensating for internal volumetric losses. Furthermore, it provides a stable, dedicated pilot pressure essential for the rapid and precise actuation of the internal control valves, ensuring the main swash plate responds instantly to operator commands.
Can the DR pressure control valve threshold be field-adjusted to suit different machinery attachments?
Yes, the DR valve is designed for precise calibration. While it is factory-preset to a standard threshold (typically between 14–22 bar depending on the specific model configuration), qualified technicians can adjust the spring tension to optimize the pressure cutoff point, perfectly matching the specific load requirements of different heavy-duty attachments.
What specific maintenance protocols are necessary to sustain the >95% volumetric efficiency over the pump's lifespan?
Maintaining this high level of efficiency primarily relies on strict fluid cleanliness. We highly recommend utilizing absolute filtration systems in the charge circuit, adhering to ISO 4406 cleanliness codes. Additionally, routine monitoring of the boost pressure and periodic sampling of the hydraulic fluid for degradation will prevent premature wear of the precision-machined plunger and cylinder barrel interfaces.
How does the swash plate design manage the mechanical stress of rapid flow reversals during operation?
The swash plate is supported by heavy-duty, low-friction bearings and controlled by highly responsive variable pistons equipped with damping orifices. When crossing the zero-displacement (neutral) position to reverse flow, these damping mechanisms intentionally soften the transition, absorbing the hydraulic shock and preventing destructive pressure spikes from impacting the machine's structural mounts.
Are the various modular control units (such as HD, EP, DA) interchangeable if the machine's primary function changes?
Yes, the modular architecture of the A10VG series allows for remarkable flexibility. If a machine is repurposed and requires a transition from mechanical (MD) to proportional electrical (EP) control, the control block can be swapped out by a qualified hydraulic technician without needing to replace the entire core pump assembly, offering significant long-term cost savings.
