A2FO80/61R-PAB05 Rexroth Fixed Displacement Pump 80.4 cm³ 400 bar

Product Overview

The A2FO80/61R-PAB05 (P/N 9424687) and A2FO80/61R-PBB05 (P/N 9610687) belong to the Bosch Rexroth A2FO series of fixed displacement axial piston pumps in bent-axis design. Designed for open-circuit hydrostatic drives, flow is proportional to drive speed and displacement. These pumps offer compact construction and high efficiency. Fully interchangeable with genuine Rexroth units, they enable direct drop-in replacement without modification to mounting interfaces or piping. Every unit undergoes 100% simulated operating-condition testing to ensure high efficiency and reliability under high pressure.

Technical Specifications 

• Model: A2FO80/61R-PAB05 / A2FO80/61R-PBB05 / A2FO80/61L (A2FO series)
• Displacement: 80.4 cm³/rev
• Continuous / Rated Pressure: up to 400 bar
• Peak / Intermittent Pressure: up to 450 bar
• Nominal Speed: 1800 rpm
• Maximum Permissible Speed: approx. 3350 rpm (with increased inlet pressure)
• Control Type: Fixed displacement
• Design: Bent-axis axial piston, open circuit
• Weight: approx. 23 kg
• Brand / Series: Bosch Rexroth A2FO fixed displacement axial piston pump

Key Technical Advantages

1. Bent-Axis High-Pressure Design & Power Density: Continuous rating of 400 bar and peak of 450 bar. Compact bent-axis construction delivers high power density for heavy-duty open-circuit applications.
2. High Overall Efficiency: Optimised piston and cylinder block design provides high mechanical-hydraulic efficiency, reducing system heat generation.
3. One-Piece Pistons & Patented Drive: One-piece pistons with piston rings and patented cylinder block drive system enhance reliability and service life.
4. Robust Bearings & Extended Life: Drive shaft bearings are designed for the expected operating conditions, supporting long-term reliable operation.
5. True Interchangeability & Economy: Fully compatible with OEM mounting dimensions and interfaces. Simple design keeps maintenance costs low.

Application Areas

• Open-circuit hydraulic systems on construction machinery
• Industrial fixed hydraulic power units and presses
• Agricultural and forestry equipment
• Port and material-handling equipment
• Any high-pressure open-circuit system requiring stable fixed flow

Expert Maintenance Tips:

1. Ensure proper drive-shaft alignment during installation; use a flexible coupling and avoid excessive radial/axial loads. Verify correct rotation and suction/pressure port connections.
2. Use anti-wear hydraulic oil meeting ISO cleanliness and viscosity requirements; system filtration should be at least 10 μm. Thoroughly bleed air before initial start-up.
3. Regularly monitor inlet pressure (min. approx. 0.8 bar absolute) and case pressure to prevent cavitation or over-pressure.
4. During service, inspect pistons, cylinder block and valve plate for wear; replace complete rotating groups when necessary. Store long-term units in a dry environment and rotate the shaft periodically.