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Rexroth A4VG250 & AA4VG180 Pump | A4VG250EP2D1, AA4VG180EP4DT1 | R902274504 | Variable Piston Pump

Model Number

AA4VG180, A4VG250

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Product Description

Rexroth A4VG250 & AA4VG180 Heavy-Duty Closed-Circuit Piston Pump

**Product Overview: ** The Rexroth A4VG series is the power core for global high-tonnage hydrostatic transmission systems. Featured models AA4VG180EP4DT1/32R (R902274504) and A4VG250EP2D1/32R are specifically engineered for extra-heavy-duty closed-circuit applications. Utilizing advanced EP Electric Proportional Control, these pumps allow for millisecond-precision displacement modulation via 12V/24V signals. With exceptional power density and a 400 Bar continuous pressure rating, they are the premier choice for rotary drilling rigs, heavy loaders, Horizontal Directional Drills (HDD), and heavy forestry traction drives.

Key Technical Advantages:

  • Large Displacement & Power Density: Offers up to 250cc displacement, delivering massive hydraulic power within a compact installation footprint.

  • Precision EP Control System: EP2/EP4 control ensures smooth reversals and highly linear flow regulation, perfectly aligning with modern digital traction control strategies.

  • Integrated Closed-Loop Solution: Built-in high-performance charge pumps, high-pressure relief valves, and charge relief valves significantly simplify the overall vehicle hydraulic architecture.

  • Extreme Durability: Featuring the classic Rexroth Series 32 swashplate design, internally reinforced for frequent alternating heavy loads to ensure an extended service life in harsh environments.

  • 100% OEM Standard Compatibility: Manufactured to strict Rexroth specifications (e.g., NTD52/NTD10 flanges and F691 shafts), ensuring a seamless “drop-in” replacement for original units.

Detailed Models & Parameters:

  • Core Series: Rexroth A4VG / AA4VG Series 32.

  • Representative Models: AA4VG180EP4DT1/32R-NTD52F691FH, A4VG250EP2D1/32R-NTD10F691DH-S.

  • Material Number (MNR): R902274504.

  • Displacements: 180 cm³/rev, 250 cm³/rev.

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

  • Target Applications: Heavy-duty rotary drilling rigs, paver drives, large forklifts, marine winches, and industrial closed-circuit transmissions.

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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