Rexroth A7V Variable Piston Pump | A7V107 A7V160 A7V250 | High Pressure

The Rexroth A7V Series from LIC Hydraulic is a time-tested Bent-Axis Variable Displacement Piston Pump designed for open-circuit applications. Covering a massive displacement range from A7V20 to A7V500, this series is the backbone of heavy-duty hydraulic power units worldwide. Models like A7V107LV1LPF00 and A7V117LV1LPF00 feature sophisticated constant power (LV) controllers for optimized energy management. We guarantee 100% mechanical interchangeability and conduct 100% simulated load testing to ensure every pump delivers peak performance under pressures up to $400\text{ bar}$.

Technical Specifications (Bulleted List)

• Series: Rexroth A7V Series

• Displacements: $20, 28, 40, 55, 58, 78, 80, 107, 117, 160, 250, 500\text{ cm}^3\text{/rev}$

• Nominal Pressure: $350\text{ bar}$ ($5075\text{ psi}$)

• Peak Pressure: $400\text{ bar}$ ($5800\text{ psi}$)

• Control Types: LV (Constant Power), DR (Pressure Control), HD (Hydraulic), EL (Electric)

• Mounting: ISO/SAE Standard Flanges

• Housing: High-strength cast iron for superior vibration damping

Key Technical Advantages

• High-Efficiency Bent-Axis Design: The 40° angle capability of the A7V series allows for higher torque efficiency and better self-priming speeds compared to traditional swashplate designs, making it ideal for high-speed industrial drives.

• Advanced Power Regulation: The LV controller (as seen in the A7V107) automatically adjusts displacement based on system pressure, preventing prime mover stalls and maximizing operational throughput.

• Spherical Valve Plate Interface: The spherical contact surface between the cylinder and valve plate provides self-centering properties, ensuring a tight seal and consistent volumetric efficiency even after years of heavy-duty use.

• Modular Control Options: Its modular design allows for easy adaptation to various control systems, ranging from simple pressure compensation to complex electronic proportional load sensing.

Application Areas

• Heavy Industry: Metal extrusion presses, large-scale injection molding, and forging hammers.

• Construction & Mining: Main pumps for heavy cranes, rotary drills, and underground mining equipment.

• Marine & Offshore: High-power winches, deck cranes, and steering gear systems.

• Steel Mills: Hydraulic power for continuous casting and rolling mill adjustment.

Expert Maintenance Tips

• Mandatory Case Filling: The rotating group must be fully submerged in oil before the first start. Fill the housing through the highest drain port with clean, filtered oil to prevent catastrophic bearing and piston failure.

• Monitor Drain Pressure: Excessive case pressure will ruin the shaft seal and destabilize the internal control settings. Ensure the drain line returns directly to the tank with minimal resistance.

• Fluid Cleanliness: Maintain fluid at ISO 18/16/13 or better. In high-pressure $350\text{ bar}$ systems, even small contaminants act like high-speed abrasives on the valve plate and piston bores.

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