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Rexroth A4VSO71DR/10R-PPB13N00 Hydraulic Pump
Overview
The Rexroth A4VSO71DR/10R-PPB13N00 is a high-performance axial piston variable displacement pump manufactured by Bosch Rexroth. As part of the A4VSO series, this pump features a swashplate design and is engineered for open-circuit hydraulic drive systems, delivering precise control of fluid flow and exceptional reliability in demanding industrial applications. The A4VSO series is widely recognized for its high power density, low noise operation, and very long service life.
Technical Features
Swashplate Axial Piston Design — The pump utilizes a swashplate-type axial piston variable displacement design specifically tailored for open-circuit hydrostatic transmissions, ensuring efficient and reliable hydraulic power conversion. The flow is proportional to the input drive speed and displacement, and by adjusting the swashplate angle, it is possible to infinitely vary the output flow.-2-3
Nominal Displacement — The pump has a displacement of 71 cm³ per revolution, making it suitable for medium-to-high flow hydraulic applications.-8-15
Pressure Ratings — The pump operates at a nominal pressure of 350 bar (5,076 psi) and can withstand maximum intermittent pressures up to 400 bar, making it suitable for high-pressure heavy-duty hydraulic systems.-2-3-8
DR Constant Pressure Control — The pump is equipped with DR constant pressure control, which maintains a stable system pressure regardless of load variations. When the system pressure is below the DR valve setting, the pump operates as a fixed displacement pump; when the set pressure is reached, the DR valve activates, reducing displacement to maintain constant pressure.-
Clockwise Rotation — The pump is designed for clockwise rotation when viewed from the shaft end, denoted by the "R" in its model code, ensuring proper operation and compatibility with other hydraulic components.-2
Excellent Suction Performance — The A4VSO series features extraordinary suction characteristics, ensuring reliable operation even under challenging inlet conditions and reducing the likelihood of cavitation.--3-4
Low Noise Operation — The pump features low working noise and low flow pulsation, making it suitable for applications where noise reduction is important for operator comfort or environmental compliance.--2-3-8
Long Service Life — Designed with high-quality materials and advanced engineering principles, including sliding bearings and gap sealing technology, the pump is built for long-term reliability and extended service life in demanding industrial environments.-3-8-22
Modular Design — The A4VSO series features a modular design providing the flexibility of variable shaft drive options and variable through-drive configurations.--3
N00 Configuration — The "N00" suffix indicates no auxiliary pump and no through-drive shaft extension, representing a standard configuration.-2-5
Wide Operating Range — The pump operates effectively with mineral oil-based hydraulic fluids across a wide viscosity and temperature range, with an operating temperature range of -20°C to +90°C.-8
High Volumetric Efficiency — The A4VSO series achieves volumetric efficiency exceeding 95%, contributing to overall system efficiency and energy savings.-
Key Functionalities
Variable Displacement Flow Control — The flow rate is proportional to the drive speed and displacement and can be infinitely varied by adjusting the swashplate angle, providing precise, stepless control over hydraulic output across the entire operating range.-2-3
Constant Pressure Control — The DR pressure compensator maintains a constant system pressure regardless of load variations. When the pump reaches the set pressure, the controller reduces displacement to match system demand, supplying only the oil volume required by the system and ensuring stable performance while protecting downstream components.-
Open-Circuit Hydrostatic Transmission — The pump is specifically designed for open-circuit operation, focusing on controlling the direction and magnitude of fluid flow within hydraulic systems. This configuration is ideal for applications where the fluid returns to the reservoir after each cycle.-2-3
Short Control Response Times — The pump features short control response times and excellent dynamic characteristics, ensuring quick and efficient operation critical in systems where rapid changes in flow or pressure are required.-4-21
High Starting Pressure Capability — The pump can start under pressure and maintain full torque output across the operating range, making it suitable for applications requiring significant force or hydraulic pressure.-15
Low Noise & Low Vibration — The pump operates with minimal noise and flow pulsation, contributing to improved working environments and reduced mechanical stress on associated equipment.-8
High Reliability & Long Service Life — With its robust construction and high-quality components, the pump ensures long-term operational stability with minimal maintenance requirements.-4-8
Energy Efficient — The variable displacement capability enables energy savings of 15–30% compared to fixed displacement pumps in dynamic load scenarios, reducing hydro-mechanical losses, heat generation, and power consumption.-41
Application Sectors
The Rexroth A4VSO71DR/10R-PPB13N00 hydraulic pump is designed for heavy-duty industrial applications requiring high-pressure, high-power hydraulic drives with precise pressure control. The A4VSO series is widely used across a broad spectrum of industries:
| Industry Sector | Typical Applications |
|---|---|
| Steel & Metallurgy | Rolling mills, continuous casting lines, slab handling equipment (proven in high-pressure heavy-load steel mill applications)- |
| Construction Machinery | Excavators, loaders, bulldozers, concrete pumps, crane telescopic arm hydraulic power units, mobile cranes, drilling equipment-8- |
| Industrial Hydraulics | Hydraulic presses, injection molding machines, forging presses-41 |
| Mining Equipment | Conveyor drives, crushers, material handling systems, mining machinery |
| Material Handling Equipment | Forklifts, pallet trucks, stackers, ship loaders/unloaders-8 |
| Agricultural Equipment | Tractors, combines, harvesters, self-propelled sprayers-8 |
| Ceramic Industry | Hydraulic equipment for ceramic factories, brick presses, tile presses-8 |
| Marine & Offshore | Ship propulsion systems, winches, deck machinery, steering gear, dredging equipment |
| Forestry Equipment | Loggers, harvesters, forwarders, wood chippers |
| Waste Management & Recycling | Shredders, balers, crushers, material separators |
Performance Specifications (Model-Specific)
| Specification | Value |
|---|---|
| Manufacturer | Bosch Rexroth |
| Series | A4VSO |
| Model Code | A4VSO71DR/10R-PPB13N00 |
| Pump Type | Axial piston variable displacement pump |
| Circuit Type | Open circuit |
| Displacement | 71 cm³/rev |
| Nominal Pressure (Continuous) | 350 bar (5,076 psi) |
| Maximum Intermittent Pressure | 400 bar (5,800 psi) |
| Maximum Speed | 1,800 rpm |
| Rotation Direction | Clockwise (R) when viewed from shaft end |
| Control Type | DR — Constant pressure control |
| Control Operation | When pressure below setpoint, full displacement; when setpoint reached, displacement reduces to maintain constant pressure |
| Shaft Type | Cylindrical with key |
| Housing Material | Stainless steel casing |
| Seals | NBR (nitrile rubber) |
| Porting | PPB13N00 configuration |
| Through-Drive | N00 — No auxiliary pump, no through-drive shaft extension |
| Weight | Approx. 53 kg |
| Fluid Compatibility | Mineral oil-based hydraulic oils (HLP according to DIN 51524) |
| Fluid Cleanliness Requirement | ISO 4406 20/18/15 minimum (19/17/14 for high-temperature operation) |
| Operating Temperature Range | -20°C to +90°C |
| Volumetric Efficiency | >95% |
| Power-to-Weight Ratio | High |
Conclusion
The Rexroth A4VSO71DR/10R-PPB13N00 is a high-performance axial piston variable displacement pump that exemplifies Bosch Rexroth's decades of expertise in hydraulic drive technology. With its advanced swashplate design, DR constant pressure control, excellent suction performance, and robust construction, it delivers exceptional power density, precise flow control, and reliable operation for demanding open-circuit hydraulic systems.
The pump's variable displacement capability enables energy savings compared to fixed displacement pumps in dynamic load applications, while its low noise operation, high volumetric efficiency (>95%), and long service life make it an ideal solution for a wide range of industrial applications—from steel mills and construction equipment to industrial presses, material handling systems, and agricultural machinery.
As a proven, reliable, and energy-efficient solution for industrial hydraulic applications worldwide, the A4VSO71DR/10R-PPB13N00 stands out as a versatile component where consistent performance, precise pressure control, and long-term dependability are essential requirements.
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