A2FE Series Hydraulic Motors
A2FE180/61W-VZL181-K, A2FE80/61W-VZL100, A2FE56/61W-VZL100, A2FE107/61W-VZ100
Product Overview
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.
Key Features & Benefits
- 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
Technical Specifications
| Model |
Displacement (cm³/rev) |
Pressure Rating (MPa) |
Shaft Type |
Weight (Approx.) |
Key Features |
| A2FE180/61W-VZL181-K |
180 |
32 |
Splined |
35-38 kg |
Heavy-duty configuration, extended life |
| A2FE80/61W-VZL100 |
80 |
32 |
Splined |
20-22 kg |
Special configuration variant |
| A2FE56/61W-VZL100 |
56 |
32 |
Splined |
18-20 kg |
Special configuration variant |
| A2FE107/61W-VZ100 |
107 |
32 |
Splined |
25-27 kg |
Special configuration variant |
Common Specifications:
- 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
Model Suffix Explanation
- VZL181-K: Heavy-duty configuration with reinforced components and extended service life
- VZL100: Special configuration variant (may indicate specific port size, mounting, or performance characteristics)
- VZ100: Special configuration variant (may indicate different porting or connection arrangement)
Applications
- 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
Installation Guidelines
Pre-Installation Checks
- 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
Mounting Procedure
- Alignment: Ensure motor shaft aligns with driven equipment without imposing radial or axial loads
- Bolting: Use evenly tightened bolts (recommended torque: 80-100 Nm for M12 bolts)
- Coupling: Use flexible coupling to accommodate minor misalignments
- Port Connections: Use appropriate seals and ensure connections are leak-free
Hydraulic System Requirements
- 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
Maintenance & Operation
Start-Up Procedure
- Fill system with recommended hydraulic fluid
- Vent air from system (crack connections at highest points)
- Start system at low pressure and check for leaks
- Gradually increase pressure to operating level
- Monitor temperature during initial operation
Routine Maintenance
- 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
Troubleshooting Signs
- 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
Frequently Asked Questions
What is the main difference between A2FE56, A2FE80, A2FE107, and A2FE180 models?
The primary difference is displacement: A2FE56 has 56 cm³/rev, A2FE80 has 80 cm³/rev, A2FE107 has 107 cm³/rev, and A2FE180 has 180 cm³/rev. This displacement range allows selection based on torque requirements - A2FE180 provides approximately 3.2 times more torque than A2FE56 at the same pressure. Physical dimensions, weight, and flow requirements also increase with displacement.
What does the "VZL100" suffix indicate on A2FE56 and A2FE80 models?
The "VZL100" suffix typically indicates a special configuration variant with specific porting, mounting, or performance characteristics. The "100" numerical value may refer to port size, connection arrangement, or other design parameters. This configuration is optimized for particular applications or system requirements. Always refer to the manufacturer's documentation for exact specifications.
What does the "VZ100" suffix mean compared to "VZL100"?
The "VZ100" suffix likely indicates a different configuration variant compared to "VZL100". The "L" in "VZL" may denote specific features such as porting arrangement, sealing type, or mounting characteristics that differ from the "VZ" configuration. The numerical "100" may be similar, but the prefix difference indicates distinct design variations. Always consult the manufacturer's datasheet for precise differences.
What is the torque output of A2FE180 at 25 MPa pressure?
Theoretical torque output is calculated as: Torque (Nm) = Displacement (cm³/rev) × Pressure (MPa) ÷ 20π. At 25 MPa: A2FE180: ≈ 716 Nm. Actual torque will be slightly lower due to mechanical efficiency (typically 92-95%). This high torque output makes A2FE180 suitable for heavy-duty applications requiring significant power.
Can A2FE56 motors be used in high-speed applications beyond 2800 rpm?
The specified maximum continuous speed is 2800 rpm. Operating above this speed may cause excessive wear, cavitation, and reduced service life. For intermittent operation at higher speeds, consult the manufacturer for specific recommendations. Some models may have optional configurations for higher speed operation, but this should be confirmed with the manufacturer before installation.
Warranty & Support
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.
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