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A4VG145
Rexroth
A4VG145 Axial Piston Pump – Unmatched Power Density for Extreme-Duty Hydrostatic Drives
The A4VG145 represents the pinnacle of power and performance within the A4VG series. As an ultra-high displacement variable pump designed for closed-loop hydrostatic transmissions, it delivers unparalleled torque and robust, intelligent control for the most demanding heavy machinery operating under continuous extreme loads.
Primary Applications & Equipment:
This pump is engineered to be the powerhouse for the largest and most powerful mobile equipment, where maximum tractive force and reliable drive performance are critical. Key applications include:
Mining & Heavy Quarrying: Large wheel loaders, dump trucks, and blast hole drilling rigs in surface mining operations.
Major Earthmoving & Construction: Large bulldozers, high-capacity excavator travel systems, and heavy compactors for major infrastructure projects.
Port & Heavy Material Handling: Ship-to-shore (STS) crane drives, heavy-duty container handlers, and large reach stackers.
Forestry & Specialized Heavy Vehicles: The primary drive for the largest harvesters and forwarders, as well as specialized vehicles for industrial and defense applications.
Core Technologies & Design Features:
Ultra-High Displacement, Bent-Axis Design: With a massive 145 cm³/rev displacement, this bent-axis pump generates exceptional flow and torque output, providing the raw hydraulic power required to move extreme loads. The bent-axis principle ensures high mechanical efficiency, excellent starting torque, and smooth power delivery even at low speeds.
Advanced Closed-Circuit Architecture for High Power: Specifically optimized for high-power closed-loop systems, it minimizes energy losses and effectively manages heat generation, which is crucial for maintaining efficiency and component longevity in continuous, high-duty-cycle operations.
Intelligent Electro-Hydraulic Control (EP Option): Configurable with sophisticated electro-proportional (EP) controls, allowing for precise, signal-responsive displacement adjustment. This enables seamless integration into centralized electronic control systems (e.g., via CAN J1939), facilitating features like programmable acceleration, speed-sensitive control, and optimal engine-pump power matching for peak fuel efficiency.
Robust, Integrated System Design: Features a heavy-duty integrated gear-type charge pump and a comprehensive valve block. This block typically includes high-capacity cross-port relief valves, an efficient flushing valve for optimal oil cooling, and pressure cut-off or load-sensing valves, creating a compact and highly reliable drive package that simplifies system design and installation.
Engineered for Extreme Conditions: Constructed with premium materials, oversized bearings, and reinforced housings to withstand the severe shock loads, vibrations, and high ambient temperatures encountered in the most challenging operating environments, guaranteeing maximum uptime and durability.
Engineered for Peak Productivity & Reliability:
The A4VG145 is built not just for power, but for intelligent power management and unwavering reliability. It translates into superior machine productivity, lower total cost of ownership through enhanced efficiency and durability, and precise control for operators.
Key Specifications (Typical):
Series: A4VG (Closed Circuit, Variable Displacement)
Displacement: 145 cm³/rev (Variable, maximum)
Maximum Operating Pressure (Closed Loop): Up to 400/450 bar (dependent on specific control type and model configuration).
Control Options: Available with various controls, including advanced electro-proportional (EP) and hydraulic servo (HD) controls, to meet precise requirements for pressure limitation, power control, or electronic speed regulation.