A2FE63/61W-VZL181-K A2FE80/61W-VAL027-S A2FE80/61W-VZL027-S A2FE80/61W-VZL181-K Hydraulic pump A2FE63 80 series quantitative hydraulic piston pump motor manufactured by Rexroth in Germany

The A2FE series axial piston hydraulic motors are fixed-displacement motors designed for high-pressure hydrostatic drives in open or closed circuits. These motors feature a spherical piston design with robust construction, providing reliable performance in demanding industrial and mobile applications.

This page details the specifications and features of models: A2FE63/61W-VZL181-K, A2FE80/61W-VAL027-S, A2FE80/61W-VZL027-S, and A2FE80/61W-VZL181-K.

• High Pressure Operation: Continuous operating pressure up to 32 MPa, with peak pressure tolerance up to 31.5 MPa
• Spherical Piston Design: Self-aligning piston and cylinder block interface reduces wear and enhances efficiency
• Compact Installation: Central flange mounting allows for space-saving integration
• High Power Density: Optimized design delivers high torque output in a compact package
• Low Noise Operation: Optimized flow characteristics ensure quiet performance
• Versatile Circuit Compatibility: Suitable for both open and closed hydraulic circuits
• Long Service Life: Durable construction with high-quality materials

• Operating Fluid: Mineral-based hydraulic oil (ISO VG 32, 46, 68)
• Operating Temperature Range: -20°C to 90°C (ideal 30-65°C)
• Speed Range: 100-2800 rpm (continuous operation)
• Installation: Flange-mounted with central mounting flange
• Port Connections: SAE standard ports (varies by model suffix)
• Rotation: Bi-directional operation

• VZL181-K: Heavy-duty version with reinforced components and extended service life
• VAL027-S: Standard open circuit configuration
• VZL027-S: Alternative porting arrangement
• VZL181-K: Heavy-duty configuration (similar to A2FE63 model but with 80 cm³/rev displacement)

• Mobile Machinery: Excavators, wheel loaders, cranes, concrete pump trucks
• Industrial Equipment: Presses, conveyors, material handling systems
• Marine Applications: Winches, propulsion systems, deck machinery
• Construction Equipment: Drilling rigs, pile drivers, compactors
• Agricultural Machinery: Combine harvesters, tractors, irrigation systems

• Verify motor shaft rotates freely by hand
• Check for any visible damage during transport
• Ensure mounting surface is clean and flat
• Confirm hydraulic connections match port sizes

1. Alignment: Ensure motor shaft aligns with driven equipment without imposing radial or axial loads
2. Bolting: Use evenly tightened bolts (recommended torque: 80-100 Nm for M12 bolts)
3. Coupling: Use flexible coupling to accommodate minor misalignments
4. Port Connections: Use appropriate seals and ensure connections are leak-free

• Fluid Cleanliness: NAS 1638 Class 8 or better (ISO 4406 18/16/13)
• Filtration: Use filters with β₍₁₀₎ ≥ 100
• Oil Viscosity: 27-43 mm²/s at operating temperature
• System Flushing: Flush system before motor installation

1. Fill system with recommended hydraulic fluid
2. Vent air from system (crack connections at highest points)
3. Start system at low pressure and check for leaks
4. Gradually increase pressure to operating level
5. Monitor temperature during initial operation

• Daily: Check for leaks, unusual noise, or vibration
• Weekly: Check oil level and condition
• Every 500 hours: Check filter condition
• Every 1000-3000 hours: Change hydraulic oil (depending on operating conditions)
• Every 2000 hours: Check mounting bolts and connections

• Low Speed: Check system pressure and flow
• Overheating: Check oil level, cooling system, and load conditions
• Noise/Vibration: Check for air in system or mechanical issues
• Leakage: Check seals and connections

The primary difference is displacement: A2FE63 models have 63 cm³/rev displacement, while A2FE80 models have 80 cm³/rev. This means A2FE80 motors can deliver approximately 27% higher torque at the same pressure, making them suitable for applications requiring more power. Physical dimensions and mounting may be similar, but torque output and flow requirements will differ significantly.

The "VZL181-K" suffix typically indicates a heavy-duty configuration with reinforced components, enhanced sealing, and extended service life features. The "VZL027-S" suffix generally indicates a standard configuration. The "181" and "027" numbers refer to specific design variations in porting, sealing, or internal components. Always refer to the specific product datasheet for exact configuration details.

Not directly. While mounting dimensions may be similar, the higher displacement of A2FE80 motors requires more hydraulic flow to achieve the same speed, and will produce higher torque at the same pressure. This could overload the hydraulic pump or other system components. System redesign or component upgrades may be necessary. Always consult the system manufacturer or a hydraulic specialist before making such changes.

Torque output depends on operating pressure and displacement. For A2FE63 models, theoretical torque is approximately 100 Nm per 10 MPa pressure. For A2FE80 models, it's approximately 127 Nm per 10 MPa. Actual torque will be slightly lower due to mechanical efficiency. Always refer to the specific model's performance curves for accurate torque values at different pressures and speeds.

Key factors to consider:

• Required torque and speed: Calculate based on load requirements
• System pressure: Ensure motor rating matches system pressure
• Circuit type: Open or closed circuit
• Mounting configuration: Shaft type, flange type, port orientation
• Environmental conditions: Temperature, contamination level
• Model suffix compatibility: Ensure the specific configuration matches your system requirements

Consult with a hydraulic specialist or the manufacturer's technical support for application-specific recommendations.

These products typically carry a standard warranty period of 12 months from date of installation or 18 months from date of shipment (whichever comes first), subject to proper installation and operation within specified parameters. Warranty terms may vary by manufacturer and region. For technical support, contact authorized service centers with the complete model number and serial number.