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Rexroth A20VO520 Series Double Pump | A20VO520LR3DN/10R, A20VO520LR3DN/10L | 350 Bar Variable Pump
| Model Number | AL A20VO 520 |
|---|
Product Description
Rexroth A20VO520 Series Ultra-Large Double Variable Pump
Product Overview: The Rexroth A20VO520 series is one of the highest power-density double axial piston variable pumps in the hydraulic industry. By integrating two high-displacement units for a total capacity of 520cm³/rev, it serves as the primary power source for ultra-large excavators, mining machinery, and heavy-duty industrial power units. Designed for Open Circuit systems and equipped with advanced LR3DN constant power control, the A20VO520 perfectly matches the engine’s power curve, maximizing output while minimizing energy waste under extreme conditions.
Key Technical Advantages:
Massive Double Power Integration: The A20VO520 combines two high-performance rotating groups within a single system, delivering a combined 520cc displacement. This configuration optimizes installation space while providing massive total flow output.
Intelligent LR3DN Power Modulation: Featuring the LR3DN regulator, which integrates constant power control, pressure cut-off, and hydraulic pilot adjustment. The system automatically modulates displacement based on pressure, preventing engine stalls during heavy excavation or lifting.
Heavy-Duty High-Pressure Durability: Engineered for grueling environments with a rated pressure of 350 Bar and peak cycles up to 400 Bar. Reinforced swashplate bearings and V-series specialized sealing ensure peak mechanical efficiency under continuous high-power cycles.
Thru-Drive & Customization (K68/K99): Equipped with robust thru-drive functionality. The K68 and K99 suffixes indicate support for tandem mounting high-displacement auxiliary pumps. Specialized versions (S2273/S2065) are precision-tuned for specific OEM flow characteristics.
Detailed Models & Technical Parameters:
Core Models: A20VO520 (Series 10).
Detailed Config Codes: ALA20VO520 LR3DN/10R-VZH26K68-S2273, AL-A20VO520LR3DN/10L-VZH26K99-S2065.
Displacement: 520 cm³/rev (Total combined).
Pressure Ratings: Rated at 350 Bar (35 MPa / 5100 PSI); Peak cycles up to 400 Bar (40 MPa).
Control Methods: LR3DN (Power/Pressure Control with Hydraulic Pilot Adjust).
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.
Our Advantages
Fast & Reliable Delivery
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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