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Rexroth AA4VG56 & AA4VG71 Pump | AA4VG56EP3D8 | AA4VG71DG R902232770 | Variable Piston Pump

Model Number

AA4VG56, AA4VG71

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Product Description

Rexroth AA4VG56 & AA4VG71 Series Closed-Circuit Variable Pump

Product Overview: The Rexroth AA4VG series is the gold standard for hydrostatic transmission systems in global mobile machinery. Specifically engineered for high-pressure closed-circuit applications, this series is renowned for its compact architecture and exceptional control precision. Featured models like the AA4VG56EP3D8/32R-NSC52F005SP (Electric Proportional Control) and AA4VG71DGD1/32R-NSF60F021S (Material No: R902232770, with Direct Control) provide smooth, powerful traction for rollers, rotary drilling rigs, and combine harvesters.

Key Technical Advantages:

  • Precision Control Options:

    • EP Control (Electric Proportional): Stepless displacement adjustment via 12V/24V signals, integrating perfectly with modern electronic vehicle control units.

    • DG Control (Direct Control): Offers mechanical direct-response operation, ensuring feedback stability in extreme working environments.

  • Highly Integrated Architecture: Features a built-in charge pump, high-pressure relief valves, and control valve groups, significantly reducing the complexity of external hydraulic plumbing.

  • Extreme High-Pressure Durability: Rated for 400 Bar (5800 PSI) continuous duty with peak support up to 450 Bar. Utilizing Rexroth-patented swashplate and piston assemblies for stability under heavy traction loads.

  • Dynamic Response Excellence: The Series 32 optimized servo mechanism provides agile, shock-free reversals (forward/reverse), enhancing overall machine operational efficiency.

  • 100% OEM Standard Compatibility: Manufactured to strict Rexroth factory specifications (e.g., NSC52/NSF60 mounting), ensuring splined shafts and flanges align perfectly for a seamless “drop-in” replacement.

Detailed Models & Parameters:

  • Core Series: Rexroth AA4VG Series 32.

  • Representative Models: AA4VG56EP3D8, AA4VG71DG, AA4VG71DGD1.

  • Material Number Reference: R902232770.

  • Displacements: 56 cm³/rev (AA4VG56), 71 cm³/rev (AA4VG71).

  • Pressure Ratings: Rated at 400 Bar (5800 PSI) continuous; Intermittent peak capability up to 450 Bar.

  • Mounting Interfaces: NSF60F021S / NSC52F005SP.

  • Target Applications: Vibratory roller traction drives, paver systems, rotary drilling rigs, concrete machinery, and heavy loaders.

Company Profile

We adhere to international quality management standards and provide a 1-year warranty including maintenance and replacement. We have established long-term strategic cooperation with many well-known brands and continuously launch new products to meet market development. Flexible payment terms are supported, including USD settlement, Alipay, Western Union and T/T.
 
Relying on our standardized production base and professional foreign trade team, we provide competitive factory direct prices, efficient logistics channels and punctual delivery. FJZY Hydraulic is devoted to being your trustworthy long-term partner in hydraulic and agricultural machinery fields.
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Our Advantages

Fast & Reliable Delivery

We optimize global logistics channels to ensure every customer receives their goods on time, anywhere in the world.

Extensive Partnerships

We collaborate with numerous factories, offering a wide range of product selections and providing you with instant quote responses

Strict Quality Assurance

Quality first is our principle. We provide a one-year warranty service, ensuring you receive top-tier quality products with confidence.

Competitive Pricing

Through efficient production and close cooperation, we offer highly competitive prices, guaranteeing a cost-effective experience for you.
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