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A4VG14OEPE
Rexroth
A4VG14OEPE Closed Circuit Axial Piston Pump – Intelligent Drive for Hydrostatic Transmissions
The A4VG14OEPE is a high-performance, electro-proportionally controlled variable displacement pump designed specifically for closed-loop hydrostatic drive systems. As part of the renowned A4VG series, it combines robust bent-axis technology with precise electronic control, delivering smooth, efficient, and responsive power for mobile machinery requiring superior traction and driving performance.
Primary Applications & Equipment:
This pump is the core component of advanced hydrostatic transmissions in a wide range of mobile equipment, including:
Construction & Earthmoving Machinery: Wheel loaders, crawler dozers, skid-steer loaders, and asphalt pavers.
Agricultural Vehicles: Tractors, combine harvesters, and self-propelled forage harvesters.
Specialized Mobile Equipment: Airport ground support vehicles, sweepers, and compact utility vehicles.
Material Handling: Reach stackers and terminal tractors.
Core Technologies & Key Features:
Electro-Proportional Displacement Control (OEPE): The "OEPE" designation signifies an electro-proportional control for displacement. It allows for infinitely variable speed and direction control of the hydraulic motor via an electrical input signal (e.g., 0-10V or 4-20mA), enabling seamless integration into modern CAN-Bus or joystick control systems for precise vehicle maneuvering.
Closed Circuit Design: Engineered specifically for closed-loop systems, where the pump's outlet directly feeds the motor's inlet and vice-versa. This design is highly efficient for continuous rotary drive applications, offering excellent controllability for acceleration, deceleration, and braking.
Integrated Auxiliary Components: Typically includes a built-in charge (supercharge) pump to feed the closed circuit, flush valve for cooling, and pressure relief valves (cross-port reliefs), creating a compact and complete drive solution.
Robust Bent-Axis Design: Features the durable and efficient bent-axis principle, known for high power density, high starting torque, long service life, and excellent tolerance to contamination.
High Efficiency & Responsiveness: Optimized hydraulics minimize losses within the closed circuit. The electro-proportional control provides fast and precise response to operator commands, improving productivity and control feel.
Engineered for Reliability & System Integration:
The A4VG14OEPE is built for the demanding conditions of mobile equipment. Its design ensures reliable operation under shock loads and continuous pressure. The electronic control interface simplifies system wiring and enables advanced functionalities like programmable acceleration ramps or remote control.
Key Specifications (Typical):
Series/Model: A4VG with EP (Electro-Proportional) Control
Displacement: 14 cm³/rev (Variable, maximum)
Maximum Operating Pressure (Closed Loop): Typically up to 450 bar (~6525 psi) for series 28 and above; specific rating depends on the exact size group.
Control Type: Electro-Proportional Displacement Control (OEPE) – Direction and flow proportional to input current.