Vickers 421AK Series Hydraulic Pump | 421AK00463B, 421AK00294A, 421AK00791B | Piston Pump

Model Number

421AK, 421AK00463B, 421AK00294A, 421AK00791B

Product Description

Vickers 421AK Series (ADU) Axial Piston Variable Displacement Pump

Product Overview: The Eaton Vickers 421AK series (also designated as the ADU series) is a high-efficiency axial piston variable pump engineered for open-circuit mobile and industrial applications. This series is a staple in tractors, harvesters, material handling machinery, and medium-duty industrial power units. Renowned for its exceptionally rugged cast-iron housing and high power density, the 421AK range—from the 421AK00463B to the 421AK00791B—provides stable, long-lasting hydraulic power even in the most demanding operating environments.

Key Technical Advantages:

  • Heavy-Duty Shock Resistance: The 421AK series features reinforced swashplate supports and high-strength rotating components. Models like the 421AK00294A are optimized for the frequent pressure fluctuations common in mobile machinery, ensuring structural integrity under stress.

  • Precise Compensator Control: Equipped with advanced Pressure Compensators. Once the system pressure reaches a preset value, the pump automatically de-strokes, reducing unnecessary energy loss and significantly lowering hydraulic fluid temperatures.

  • Low Noise & Vibration: Acoustically optimized internal flow paths maintain minimal decibel levels even at rated pressures, making it ideal for agricultural and construction vehicles where cabin quietness is a priority.

  • 100% Industrial Interchangeability: Manufactured strictly to Vickers OEM specifications. Models like the 421AK00463B are a direct “drop-in” match for original equipment, drastically reducing downtime for maintenance and system upgrades.

Specific Models & Technical Parameters:

  • Core Series: 421AK, ADU Series.

  • Detailed Config Codes: 421AK00463B, 421AK00294A, 421AK00791B.

  • Displacement Range: 41cc to 80cc depending on specific configuration.

  • Pressure Specifications: Rated operating pressure 210 Bar (21 MPa); Peak cycles up to 280 Bar.

  • Mounting Interface: Compliant with standard SAE specifications, available with various shaft and flange options.


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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