A2FE Series Hydraulic Motors - Product Details
The A2FE series axial piston hydraulic motors are designed for high-pressure hydrostatic drives in open or closed circuits. Known for robust construction and reliable performance, these motors are suitable for various industrial and mobile applications. This page details the specifications and features of models A2FE45/61W-VZL191J-S, A2FE45/61W-VZL020D, A2FE56/61W-VZL027-S, and A2FE56/61W-VZL020D-S.
Product Overview
A2FE hydraulic motors are fixed-displacement motors that provide high torque and efficiency. They feature a spherical piston design and are built to withstand heavy loads, making them ideal for demanding environments such as construction machinery, industrial equipment, and marine applications.
Key Features & Benefits
- High Pressure Rating: Capable of operating continuously at pressures up to 32 MPa, with peak pressure tolerance up to 31.5 MPa
- Spherical Piston Design: The piston and cylinder block interface uses a spherical pairing that ensures self-alignment during rotation, reducing wear and enhancing efficiency
- Rugged Construction: Made from cast iron for durability and resistance to harsh conditions
- Smooth Operation: Low noise levels and stable output across a wide speed range
- Versatile Installation: Can be mounted in any orientation without compromising performance
Technical Specifications
| Model |
Displacement (cm³/rev) |
Pressure Rating (MPa) |
Shaft Type |
Weight (Approx.) |
Application Notes |
| A2FE45/61W-VZL191J-S |
45 |
32 |
Splined |
Medium |
For high-speed, medium-torque applications |
| A2FE45/61W-VZL020D |
45 |
32 |
Splined |
Medium |
General-purpose motor for open circuits |
| A2FE56/61W-VZL027-S |
56 |
32 |
Splined |
Medium-High |
Balanced torque and speed for mobile machinery |
| A2FE56/61W-VZL020D-S |
56 |
32 |
Splined |
Medium-High |
Suitable for continuous duty in industrial systems |
Common Specifications:
Operating Fluid: Mineral-based hydraulic oil
Operating Temperature Range: 30°C to 90°C
Installation: Flange-mounted
Applications
- Mobile machinery (e.g., excavators, cranes)
- Industrial hydraulic systems (e.g., presses, conveyors)
- Marine equipment (winches, propulsion systems)
Installation & Maintenance
- Pre-Installation Check: Ensure the motor shaft rotates freely and is free from contamination. Flush the motor if it has been stored for a long time
- Alignment: Couple the motor shaft to the load without imposing radial or axial forces. Misalignment can cause premature bearing failure
- Bolting: Use evenly tightened bolts for mounting to avoid vibration
- Fluid Cleanliness: Maintain oil cleanliness to prevent particle-induced wear. Use filters with β₍₁₀₎ ≥ 100 and adhere to NAS 1638 Class 8 cleanliness
- Oil Change Interval: Replace hydraulic oil every 1,000-3,000 operating hours or every 6 months
Frequently Asked Questions (FAQs)
What is the difference between the VZL191J-S and VZL020D suffixes in A2FE45 models?
Suffixes like VZL191J-S and VZL020D indicate variations in shaft design, sealing, or porting configurations. These affect compatibility with specific machinery. Always refer to the manufacturer's datasheet for exact matching.
Can A2FE motors be used in both open and closed circuits?
Yes, A2FE motors are suitable for open and closed-circuit hydrostatic transmissions. Ensure the model suffix matches your system type (e.g., VZL for open circuits).
What precautions are necessary for maintaining high efficiency?
Use recommended hydraulic fluids, maintain oil cleanliness, and avoid exceeding the maximum operating pressure. Regularly inspect seals and bearings for wear.
Is external cooling required for continuous operation?
Depending on load and ambient temperature, auxiliary cooling may be needed. Monitor oil temperature to ensure it stays within the 30°C-90°C range.
How do I identify a genuine A2FE motor?
Genuine products include branded packaging, model markings on the nameplate, and certification documents. Purchase from authorized distributors to avoid counterfeits.
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