Short Description
Premium factory-direct aftermarket Bosch Rexroth A20VSO Series Variable Displacement Axial Piston Double Pumps (Complete Assemblies), meticulously engineered as 100% plug-and-play interchangeable power units for heavy-duty industrial and marine open-circuit systems. Housing two completely independent variable displacement pump groups within one rigid cast-iron frame, our high-tonnage A20VSO (Sizes 60 to 520) assemblies utilize upgraded bimetallic rotary kits and hardened piston groups. Every double pump is fully validated to sustain continuous operational pressures up to 350 bar and peak shock loads up to 400 barin forging presses, die-casting machinery, steel mill HPUs, and marine winches.
Key Technical Highlights
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100% Synchronized Drop-In OEM Fitment: Fully reverse-engineered strictly to original Bosch Rexroth A20VSO micro-metric factory blueprints. The common suction porting, dual-pressure SAE code 62 delivery flanges, and mounting interfaces align flawlessly with your factory plant layout—zero line modification needed.
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Dual-Pump Automated Load Balance Certification: We solve the hardest engineering hurdle of double pumps: synchronized control. Every single A20VSO assembly is tested on our advanced heavy facilities. We cross-reference and calibrate both internal regulators simultaneously under high pressures to ensure zero flow-splitting divergence.
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Ultra-Rigid Anti-Deflection Housing Design: Built with high-tensile nodular cast-iron pump casings and micro-lapped bimetal cylinder barrels. Designed to minimize internal component structural deflection under immense continuous synchronous 350 bar variable loading.
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Mastery Over Complex Regulators: Fully equipped and factory-calibrated for all core Rexroth industrial control combinations, including DR (Pressure Control), DFR/DFR1 (Load Sensing), and LR/LRD/LRG (Hyperbolic Power/Torque Limits) to ensure perfect matching with the host machine’s original PLC logic.
| Frame Size (Per Single Pump) | Available Dual-Control Regulator Valving | Primary Heavy Industrial Application Fleet |
|---|---|---|
| A20VSO60 / A20VSO95 / A20VSO190 | DR / DRG: Pressure Control (Remote) DFR / DFR1: Load Sensing (LS) + Pressure Limiter LRD / LRG: Hyperbolic Power Regulator with Pressure Limiter LE2S / LE4S: Electronic Proportional Displacement Control |
Heavy Die-Casting Machinery, Industrial Scrap Metal Shear Presses, Heavy Plastic Injection Units, Sheet Metal Bending Systems. |
| A20VSO260 / A20VSO520 | Steel Mill Continuous Casting Lines, High-Tonnage Hydraulic Forging Plants, Shipboard Deck Cargo Crane Winches, Mining Shovels. |
Haozheng Hydraulic Production Processing Diagram
Haozheng Hydraulic Honorary Certificate
Exhibition
FAQ
Q1: Rexroth A20VSO double pumps utilize long, highly integrated model codes. How can you ensure the dual control logic and shaft match my existing system parameters?
A: For a heavy double pump like the A20VSO, any positioning error can cause immediate structural damage or logic failure. The alphanumeric string dictates vital parameters, including synchronous horsepower limits, dynamic rotation, rotation design series (Series 30 or 51), internal spline profiles, and specific split-regulator configurations (e.g., A20VSO190LRD/30R-VPB24N00). To eliminate any on-site commissioning risks, our engineering desk cross-checks either your original data nameplate or your system’s design schematics before finalizing the inner assembly.
Q2: Heavy industrial applications demand perfect load-matching between the twin circuits. How does your factory handle double-pump synchronization?
A: Unbalanced displacement shifting between the two pumps will cause structural oil-shocks and stall factory actuators. At our manufacturing facility, every complete A20VSO twin pump undergoes rigorous full-load dynamic staging. We do not just adjust the standalone valves; we track the real-time flow convergence lines of both pumps simultaneously under full continuous 350 bar testing loops, precision-tuning the hyperbolic power curves ($\text{P-Q}$) to align with the factory specification right out of the box.
