A2F45 R2P2 Rexroth A2F Fixed Piston Pump 45.6cc 400bar

Product Overview

The A2F45 R2P2 belongs to the Bosch Rexroth A2F series of bent-axis fixed displacement high-pressure axial piston pumps/motors. It offers true drop-in interchangeability with original Rexroth units—standard mounting flanges and shaft ends—so no piping modifications are required. Every unit is 100% tested under simulated operating conditions to guarantee reliable performance in open or closed high-pressure circuits. Featuring bent-axis design, flow is proportional to drive speed and displacement, while output torque increases with the pressure differential. The design delivers high efficiency, low noise, and long service life for hydrostatic drive systems.

Technical Specifications 

• Model: A2F45 R2P2 (A2F series)
• Displacement: 45.6 cm³/rev
• Nominal pressure: 350–400 bar (depending on shaft end)
• Peak pressure: 400–450 bar
• Maximum speed: approx. 2240–5600 rpm (depending on operating conditions)
• Control type: Fixed displacement
• Weight: approximately 13.5–23 kg (depending on configuration)
• Circuit compatibility: Open and closed
• Direction of rotation: R (clockwise)

Key Technical Advantages

1. Precision bent-axis design: High-efficiency rotating group with self-centering spherical control surface, low peripheral speed, and excellent volumetric efficiency.
2. High-pressure capability and long-life bearings: Supports nominal 400 bar and peak 450 bar; robust rolling bearings ensure extended service life.
3. Low noise and high reliability: Optimized structure reduces operating noise; drive shaft capable of accepting radial loads.
4. Drop-in interchangeability and wide size range: Standard interfaces covering a broad displacement range for easy system replacement and upgrades.
5. Pump/motor versatility: The same unit can operate as a pump or motor, increasing application flexibility.

Application Areas

• Hydrostatic transmissions in construction machinery
• Agricultural and forestry equipment
• Industrial hydraulic systems
• Cranes and material handling
• High-pressure open and closed circuits

Expert Maintenance Tips

Ensure suction lines are adequately sized; route case drain independently within recommended pressure limits. Fully bleed the system before first start-up and maintain high fluid cleanliness. Use recommended viscosity hydraulic oil and inspect filters and oil temperature regularly. Avoid overspeed and overpressure operation. For long-term storage, fill with clean oil and seal all ports to prevent corrosion.