Rexroth A2FM160 Fixed Piston Motor | A2FM160/61W-VZB020 | High Pressure Hydraulic Motor

The A2FM Series axial piston fixed motors from Chengyuan Hydraulic are high-pressure bent-axis units fully compatible with Rexroth Series 61 standards. Designed for hydrostatic transmissions in both open and closed circuits, the A2FM series leverages a classic 40° bent-axis geometry to deliver exceptional power-to-weight ratios. For core models including A2FM160 (including Material No. R992001512), A2FM12, and A2FM10, we implement reinforced spherical valve plates and specialized wear-resistant alloys. Every motor undergoes 100% full-load simulated condition testing to ensure peak performance at 400 Bar continuous pressure, guaranteeing 100% original-place interchangeability.

Technical Specifications :

• Series Model: A2FM Series (Design Series 61)

• Displacements: 160cc, 12cc, 10cc /rev

• Nominal Pressure: 400 bar (40 MPa)

• Maximum Pressure: 450 bar (45 MPa)

• Max Speed (A2FM160): 3150 rpm

• Max Speed (A2FM10/12): 6000 – 8000 rpm

• Max Torque (A2FM160): 1018 Nm (at 400 bar)

• Rotation: W (All-purpose, bi-directional)

• Sealing: FKM (Viton) standard for multi-fluid compatibility

• Interface: ISO Standard flange and shaft extensions

Key Technical Advantages:

• 40° Bent-Axis Efficiency: The bent-axis design eliminates slipper failure risks common in swashplate designs, allowing for significantly higher rotational speeds and superior starting torque efficiency.

• Excellent Volumetric Efficiency: The spherical valve plate design automatically compensates for thermal expansion, maintaining tight clearances and minimizing internal leakage across the entire pressure range.

• Robust Bearing System: Equipped with heavy-duty tapered roller bearings optimized to handle both radial and axial loads, allowing the motor to be driven via couplings or gears directly.

• One-Piece Piston Design: Pistons are forged as single units and precision-ground, providing high structural integrity and stability during high-frequency reversals and impact loads.

Application Areas:

• Mobile Machinery: Excavator swing drives, track drives, and road roller vibration units.

• Industrial Transmissions: Mixer drives, hoist mechanisms, and hydraulic winches.

• Agriculture: Harvester chopping units and woodworking equipment.

Expert Maintenance Tips:

• Case Drain Installation: The housing must be filled with oil before start-up. The drain line must be connected to the highest port and lead directly back to the tank to ensure bearing lubrication.

• Return Line Backpressure: Monitor return line backpressure carefully. Excessive pressure can damage the shaft seal; a dedicated drain line is highly recommended.

• Fluid Standard: Use high-quality ISO VG 46 anti-wear oil. Maintain cleanliness levels at ISO 19/17/14 or better to maximize the lifespan of the bent-axis components.