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The A2FE56 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 appliions.
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 into mechanical gearboxes
High Power Density: Optimized design delivers high torque output in a compact package
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 do the different model suffixes (VAL, VZL, VZAL) indie?
The suffixes indie specific configuration differences in porting, sealing, and mounting arrangements. For example:
VAL series typically indies standard open circuit configuration
VZL series often includes special flange mounting or sealing features
VZAL indies enhanced sealing and porting arrangements
-SK suffix may indie special sealing or connection requirements
Always refer to the specific product datasheet for exact configuration details, as suffix meanings can vary by manufacturer and appliion.
Can these motors be used in both open and closed circuits?
Yes, A2FE56 series motors are designed to operate in both open and closed hydraulic circuits. However, specific model configurations may be optimized for one circuit type. For example, models with "VZL" or "VZAL" suffixes may have features better suited for closed circuits. Always verify the model's circuit compatibility in the technical documentation before installation.
What is the recommended hydraulic fluid and maintenance interval?
Use mineral-based hydraulic oil with ISO VG 32, 46, or 68 viscosity grade, depending on operating temperature. The oil should meet DIN 51524 Part 2 (HLP) or equivalent standards. Oil change intervals depend on operating conditions:
Normal conditions: Every 2000-3000 operating hours
Severe conditions (high temperature, contamination): Every 1000 hours
Based on oil analysis: Follow oil condition monitoring results
Always maintain oil cleanliness at NAS 1638 Class 8 or better.
How do I identify the correct replacement parts for these motors?
Replacement parts should be sourced from authorized distributors or the original manufacturer. Key identifiion information includes:
Complete model number (including all suffixes)
Serial number (if available)
Date of manufacture
Part numbers from the original parts list
Using non-genuine parts may void warranties and affect performance. Always use seals and components specified for the exact model.
What are the common failure modes and how can they be prevented?
Common issues include:
Seal failure: Caused by contamination, high temperature, or improper installation. Prevention: Maintain oil cleanliness, monitor temperature, use correct installation procedures.
Bearing wear: Due to misalignment, contamination, or overload. Prevention: Ensure proper alignment, use clean oil, avoid exceeding rated loads.
Internal wear: From contaminated oil or improper operation. Prevention: Regular oil changes, proper filtration, correct operating parameters.
Regular maintenance and operating within specified parameters significantly extend motor life.
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 - consult the specific product documentation for details. For technical support, contact authorized service centers or the manufacturer's technical support team with the complete model number and serial number.
Note: This product information is based on general specifiions for A2FE series hydraulic motors. Always refer to the specific product datasheet and installation manual for the exact model you are using, as specifiions may vary between manufacturers and specific configurations. Operating outside specified parameters may void warranties and cause equipment damage. Last updated: January 2026
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Exporter
Total Annual:
1 million-10 millon
Employee Number:
>50
Ecer Certification：
Verified Supplier
Quanzhou Yisenneng Hydraulic Electromechanical Equipment Co., Ltd. has been established for many years and has now developed into an international trading company supplying various hydraulic machinery parts, oil pumps and valves. We are one of the few Chinese companies with multiple products and cha... Quanzhou Yisenneng Hydraulic Electromechanical Equipment Co., Ltd. has been established for many years and has now developed into an international trading company supplying various hydraulic machinery parts, oil pumps and valves. We are one of the few Chinese companies with multiple products and cha...
