A2FE56/61W-VAL027-S A2FE56/61W-VZL027F-SK A2FE56/61W-VZAL027F-SK A2FE56/61W-VZL181-K Made in Germany A2FE56 series quantitative piston pump motor Rexroth hydraulic pump

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 applications.

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

The suffixes indicate specific configuration differences in porting, sealing, and mounting arrangements. For example:

• VAL series typically indicates standard open circuit configuration
• VZL series often includes special flange mounting or sealing features
• VZAL indicates enhanced sealing and porting arrangements
• -SK suffix may indicate special sealing or connection requirements

Always refer to the specific product datasheet for exact configuration details, as suffix meanings can vary by manufacturer and application.

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.

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.

Replacement parts should be sourced from authorized distributors or the original manufacturer. Key identification 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.

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.

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.