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A4VG175
Rexroth
Product Overview
The A4VG175 is a robust, high-performance variable displacement axial piston unit engineered for demanding closed-circuit hydrostatic drive systems. This model is designed to deliver substantial hydraulic power and precise, intelligent control for large-scale mobile and industrial machinery. With its versatile functionality operating as either a pump or a motor within the same loop, it provides a compact and efficient solution for applications requiring high torque, reliable power transmission, and dynamic control.
Key Features & Advantages
Variable Displacement for Optimal Efficiency: The unit adjusts its displacement steplessly based on system demand, ensuring power is delivered precisely when and where needed. This minimizes energy waste, reduces fuel consumption, and lowers overall operating costs.
High Power & Torque Density: The 175 cc/rev displacement class provides significant power output in a robust package, capable of driving heavy loads and large drive systems directly.
Advanced Control for Superior Performance: Available with various control options such as electro-hydraulic proportional control, enabling precise functions like load sensing and constant power regulation for smooth, responsive machine operation.
Proven Closed-Loop Design: Optimized for efficient closed-circuit hydrostatic transmissions, facilitating energy recovery during braking phases and enabling smooth control of speed and direction.
Integrated System Solution: Typically incorporates a built-in charge pump and essential control valving, reducing external plumbing, saving space, and enhancing overall system reliability and simplicity.
Exceptional Durability: Constructed with heavy-duty materials to withstand continuous high-pressure operation (up to 400+ bar), shock loads, and harsh working environments, ensuring maximum uptime.
Typical Applications
This hydraulic unit is the core power component for large, high-power equipment across multiple sectors:
Heavy Construction & Mining Machinery: Main drive for large hydraulic excavators, wheel loaders, mining shovels, and drilling rigs.
Agricultural & Forestry Equipment: Primary drive for high-horsepower tractors, large combine harvesters, forage harvesters, and forestry harvesters/forwarders.
Industrial & Marine Applications: Drive systems for large winches, heavy-duty conveyors, industrial presses, and deck machinery on ships and offshore vessels.
Technical Specifications Summary
| Parameter | Specification / Typical Range |
|---|---|
| Series / Model | A4VG175 |
| Type | Variable Displacement Axial Piston Unit (Pump/Motor) |
| Circuit Type | Primarily Closed Circuit |
| Nominal Displacement | ~175 cm³/rev (Exact value depends on complete model code) |
| Maximum Operating Pressure | Up to 400 bar or higher (pressure stage dependent) |
| Control Types Available | Electro-Hydraulic Proportional (e.g., HD), Hydraulic (e.g., DA), Constant Power (EP) |
| Integrated Charge Pump | Typically included to supply control and make-up flow. |