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Rexroth A4VG Series Pump | A4VG90DA2, A4VG125DA2 | Komatsu WA250-5, WA270-5, WA320-5 | HST Travel Pump

Model Number

A4VG105EP4D1/32R-NSF02F001BP, A4VG180EP4D1/32R-NZDO2F691BF

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Product Description

Rexroth A4VG Series Hydrostatic Main Pumps for Wheel Loaders

Product Overview: The Rexroth A4VG series axial piston variable displacement pumps are the powerhouse of hydrostatic transmission (HST) systems for mid-sized wheel loaders. Featured models like the A4VG90DA2D2 and A4VG125DA2DM2/32R-NSF02F071DC-S are engineered specifically for Komatsu WA250-5, WA270-5, and WA320-5 loaders. Utilizing advanced DA (Speed-Related) automatic control, these pumps modulate displacement precisely based on engine RPM, delivering seamless speed variation and powerful tractive force. Highly integrated with high-pressure relief and charge systems, this pump ensures smooth and efficient operation across excavating and traveling modes.

Key Technical Advantages:

  • Intelligent DA Speed Control: The integrated DA2 mechanism synchronizes output displacement with engine speed, preventing stalls under heavy loads and optimizing fuel efficiency.

  • Heavy-Duty Closed-Circuit Performance: Rated for continuous operation at 400 Bar (5800 PSI), designed to handle the frequent reversing and severe load surges typical of wheel loader cycles.

  • Highly Integrated Solution: Built-in charge pumps, charge relief valves, and high-pressure relief valves simplify chassis hydraulic layouts and minimize potential leakage points.

  • Superior Power-to-Weight Ratio: Compact design delivers maximum power output within the constrained engine compartments of WA250/WA320 loaders.

  • 100% Komatsu WA Series Compatibility: Adheres strictly to OEM specifications (NSF/DC-S options), ensuring splined shafts and ports align perfectly for a “drop-in” replacement.

Detailed Models & Parameters:

  • Core Series: Rexroth A4VG Series 32 (Closed Circuit).

  • Compatible Equipment: WA250-5, WA270-5, WA320-5, WA380.

  • Model Keywords: A4VG90DA2D2, A4VG125DA2DM2/32R-NSF02F071DC-S.

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

  • Control Types: DA2 (Speed-Related), DA1, EP (Electric Proportional).

  • Target Applications: Wheel loader travel drives, vibratory rollers, and telescopic handlers.

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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