A2FO80/61R-PPB05 Rexroth Axial Piston Pump 80cc 400bar

Product Overview

The A2FO80/61R-PPB05 is a fixed-displacement, bent-axis axial piston pump from the Bosch Rexroth A2FO series, engineered for hydrostatic drives in open-circuit hydraulic systems. Featuring an axial tapered piston rotary group of bent-axis design, this pump delivers flow directly proportional to drive speed and displacement.

The A2FO series is one of Rexroth’s most widely applied fixed pump product lines, recognized for its high power density and exceptional reliability across mobile and industrial applications. Designed as a 100% interchangeable direct replacement for the original Rexroth A2FO80/61R-PPB05, this product matches OEM specifications in mounting dimensions, porting interfaces, and performance characteristics. Every unit undergoes 100% simulated duty cycle testing prior to shipment, validating volumetric efficiency, mechanical efficiency, and sealing integrity under actual operating load conditions.

With its robust construction and high-pressure capability, the A2FO80/61R-PPB05 is widely deployed in mobile machinery, agricultural equipment, and stationary hydraulic systems requiring reliable fixed-displacement pump sources.

Technical Specifications 

• Model: A2FO80/61R-PPB05

• Part Number: R902137814

• Series: 6X

• Product Type: Bent-axis axial piston fixed pump (open circuit)

• Geometric Displacement: 80.4 cm³/rev

• Nominal Pressure: 400 bar

• Peak Pressure: 450 bar

• Rated Flow: 145 L/min

• Max Speed: 1800 rpm

• Direction of Rotation: Clockwise (viewed from shaft end, “R” designation)

• Port Configuration: PPB05 (SAE flange ports, side inlet/outlet)

• Shaft Type: P – Cylindrical shaft with keyway (DIN 6885)

• Mounting Flange: B – ISO 3019-2 4-hole flange

• Seal Material: NBR

• Weight: 23–30 kg

• Circuit Type: Open circuit

• Hydraulic Fluids: Mineral oil and approved hydraulic fluids

Note: Pressure and speed parameters may vary across different configurations (shaft type, seal, porting, etc.). Please refer to the corresponding Rexroth technical manual for specific model details.

Key Technical Advantages

1. Bent-Axis Fixed Displacement Design – High Efficiency and Reliability

The A2FO series employs a proven bent-axis design with an axial tapered piston rotary group. The fixed displacement design eliminates the complexity of variable mechanisms, providing superior reliability and extended maintenance intervals under extreme operating conditions. One-piece pistons with piston rings deliver excellent sealing performance.

2. High Power Density – Compact Size with Exceptional Pressure Capability

With a displacement of 80.4 cm³/rev in a compact footprint, the pump delivers rated pressure up to 400 bar and peak pressure up to 450 bar. This high power density makes it ideal for space-constrained applications requiring high-pressure output.

3. 100% Interchangeability – Zero-Modification Drop-In Replacement

Manufactured to exact OEM mounting dimensions, porting specifications, and performance standards, this pump achieves 100% interchangeability with the original Rexroth A2FO80/61R-PPB05. No machine modifications are required—simply replace and resume operation, minimizing downtime and reducing maintenance costs.

4. 100% Simulated Duty Cycle Testing for Extreme Environment Reliability

Every pump undergoes 100% simulated duty cycle testing before shipment, validating performance under rated pressure (400 bar), peak pressure (450 bar), and maximum speed conditions—ensuring long-term reliability in demanding mobile and industrial applications.

5. Robust Construction for Long Service Life

Engineered with a robust and compact design, the pump is built for continuous high-pressure operation. High-quality materials and precision machining ensure extended service life under demanding conditions.

6. Modular Configuration for Versatile Application Adaptation

The A2FO series offers multiple displacement sizes, shaft types, seal materials, and mounting flange options. The PPB05 port configuration features standard SAE flange interfaces with side inlet/outlet ports for flexible system plumbing.

Application Areas

• Construction Equipment: Excavator auxiliary hydraulic systems, small crawler drill rigs, mini excavator hydraulic power sources

• Mobile Machinery: Travel drive pump sources for small construction machinery

• Agricultural Machinery: Steering hydraulic pumps for large harvesters, implement lift hydraulic pumps

• Stationary Hydraulic Equipment: Machine clamping hydraulic power units, small die-casting auxiliary oil sources

• Specialty Vehicles: Vehicle hoist winch hydraulic pumps, aerial work vehicle hydraulic supplies

• Environmental Equipment: Small compressed garbage truck auxiliary pumps, cleaning vehicle hydraulic power units

Expert Maintenance Tips

1. Mounting Orientation: Priority should be given to horizontal installation with the drain port positioned downward. The drain line must return to a separate oil tank with back pressure < 0.5 bar—do not connect to the main return line.

2. Pre-Installation Preparation: Before using the A2FO series pump, read and understand the complete Rexroth instruction manual. For first commissioning, fill the pump housing with hydraulic fluid through the case drain port before testing—never operate the pump without fluid.

3. Suction Line Design: The inlet line should be short and large in diameter, with inlet filter flow ≥ 2× pump rated flow. Strictly prevent air suction and cavitation.

4. Coupling Connection: Use a flexible coupling for connection—the pump shaft must not bear radial or axial external loads.

5. Oil Cleanliness Control: A2FO series pumps require high fluid cleanliness. Recommended system filtration not less than ISO 4406 18/13. Regular oil analysis is recommended with filter change intervals adjusted based on contamination levels.

6. Regular Inspection Schedule: Regular inspection of the hydraulic system and axial piston unit is recommended. Check hydraulic fluid level daily and monitor operating temperature, noise levels, and case drain flow regularly. Abnormal increases may indicate internal wear or seal degradation.

7. Operating Temperature Control: Ensure the hydraulic system operating oil temperature remains within the recommended range (30–90°C) to prevent viscosity reduction and seal degradation from excessive temperatures.