A2F80W2P2 Rexroth Bent Axis Piston Pump Motor | A2F80 Fixed Displacement | 350-400 Bar High Pressure

Chengyuan Hydraulic offers the A2F80W2P2 series bent-axis fixed displacement units, meticulously engineered as premium-grade replacements for Rexroth industrial and mobile standards. This model functions seamlessly as both a pump and a motor, utilizing the classic bent-axis design.

Renowned for its superior power density and self-priming capabilities, Chengyuan’s A2F80 units are manufactured to strict technical tolerances, ensuring 100% Drop-in Interchangeability with Rexroth in terms of mounting flanges, shaft configurations, and port locations. Backed by our 100% Simulation Load Testing, every unit is validated under high-pressure conditions to ensure efficiency, providing a reliable and cost-effective power solution for cranes, presses, and heavy-duty machinery.

Technical Specifications 

• Model Code: A2F80W2P2 (Series 2)

• Displacement: 80.0 $cm^3/rev$

• Nominal Pressure: 35.0 MPa (350 Bar)

• Peak Pressure: 40.0 MPa (400 Bar)

• Max Speed (As Pump, Self-priming): 2240 rpm

• Max Speed (As Motor, Intermittent): 3750 rpm

• Max Flow: Approx. 179 L/min (at 2240 rpm)

• Max Torque: 445 Nm (at Δp = 350 bar)

• Control Type: Fixed Displacement

• Sealing: FKM (Viton) for high-temperature and chemical resistance

• Weight: Approx. 23 kg

Key Technical Advantages:

• Bent-Axis Geometry: The 40° bent-axis design optimizes volumetric efficiency and minimizes start-up torque loss. Compared to swash-plate designs, it offers superior resistance to contamination and higher mechanical robustness.

• Heavy-Duty Bearing System: Equipped with high-capacity tapered roller bearings, the unit handles extreme axial and radial loads, ensuring an extended service life even under 400 bar peak pressure.

• Precision Spherical Valve Plate: The interface between the valve plate and cylinder block is precision-ground to a spherical finish, dramatically improving high-pressure sealing and maintaining high efficiency at low speeds.

• Integrated Cast Housing: The optimized housing design reinforces structural integrity while enhancing internal cooling paths, reducing thermal energy losses during high-pressure operation.

Application Areas:

• Construction Machinery: Hoisting motors for crawler cranes, concrete pump agitator drives.

• Industrial Presses: Main pump source for hydraulic presses, power units for heavy shears.

• Marine Equipment: Winch drives, steering gear power systems.

• Mobile Equipment: Travel motors for agricultural and forestry machinery.

Expert Maintenance Tips:

• Case Flushing: When used as a motor or in high-speed operation, always connect the case drain ports (T1/T2). Ensure the case pressure does not exceed 2 Bar to protect the shaft seal.

• Initial Start-up Air Bleeding: Before the first operation, fill the case with clean hydraulic oil through the highest drain port. This prevents catastrophic damage to bearings and pistons during a dry start.

• System Filtration: Maintain system cleanliness to at least ISO 4406 18/16/13. While bent-axis units are robust, fine particulates can still accelerate wear on the spherical valve-cylinder interface.