Rexroth A2FO Series Axial Piston Pump | A2FO32 A2FO80 A2FO45 | Fixed Displacement Pump

The A2FO Series fixed displacement piston pumps from Chengyuan Hydraulic are high-pressure bent-axis units fully compatible with Rexroth Series 61 & 63 standards. Featuring a classic 40° bent-axis design, these pumps offer a compact footprint combined with superior self-priming capabilities and higher mechanical efficiency compared to swashplate designs. For core models like A2FO32, A2FO80, A2FO45, and A2FO16, we implement reinforced bearing sets and anti-wear valve plate technology. Every unit undergoes 100% full-load condition testing to ensure stable flow delivery at 400 Bar peak pressure, guaranteeing 100% original-place interchangeability.

Technical Specifications :

• Series Model: A2FO Series (Sizes 16 to 80)

• Displacement: 16cc, 32cc, 45cc, 80cc /rev

• Design Series: 61 / 63 Series

• Nominal Pressure: 400 bar (40 MPa)

• Peak Pressure: 450 bar (45 MPa)

• Direction of Rotation: Right (R) or Left (L)

• Max Speed (Self-priming): Up to 2500 – 4750 rpm (depending on size)

• Sealing Material: FKM (Viton) as standard

• Mounting Flange: ISO 4-bolt standard

• Shaft End: Splined shaft (DIN 5480) or Parallel keyed shaft

Key Technical Advantages:

• 40° Bent-Axis Efficiency: The fixed 40° angle between the pistons and the drive shaft eliminates the risk of slipper detachment common in swashplate pumps, providing significantly higher mechanical efficiency during high-flow operations.

• Superior Self-Priming Performance: The optimized suction port on the valve plate allows the pump to operate at higher speeds without cavitation, making it ideal for applications where the pump is mounted above the oil level.

• Spherical Valve Plate Technology: The piston assembly features a spherical port plate design that automatically compensates for minor misalignments, ensuring excellent volumetric efficiency and extended service life under high-pressure conditions.

• Compact Housing Design: Built with high-strength cast iron, the housing resists high-pressure spikes while remaining compact, simplifying installation and piping in tight spaces.

Application Areas:

• Construction Machinery: Road rollers, concrete mixers, and auxiliary circuits for loaders.

• Industrial Power Units: High-pressure test benches, metal shears, and press power sources.

• Forestry Equipment: Powering actuators for harvesters and logging machinery.

Expert Maintenance Tips:

• Case Filling: Before start-up, the pump housing must be filled with hydraulic oil via the drain port to lubricate the bearings and piston assembly.

• Rotation Check: A2FO is a fixed displacement pump; rotation cannot be reversed. Verify the code (R for clockwise, L for counter-clockwise) against your drive source before installation.

• Suction Line Integrity: Due to high self-priming speeds, the integrity of the suction line is critical. Even minor air leaks can cause severe noise and catastrophic pump failure.