Rexroth A7VO Series Piston Pump | A7VO160 A7VO107 A7VO80 | Variable Displacement

The Rexroth A7VO Series from LIC Hydraulic is a heavy-duty Bent-Axis Variable Displacement Piston Pump engineered for open-circuit hydraulic systems. This range, featuring A7VO80, A7VO107, A7VO160, and A7VO250, represents the pinnacle of high-speed and high-pressure performance. Model A7VO160EP2/63R-VPB01 offers advanced electro-proportional control, making it suitable for modern intelligent machinery. We guarantee 100% mechanical and functional interchangeability. Every unit is subjected to 100% simulated load testing to ensure precise flow-pressure curves that meet or exceed OEM specifications.

Technical Specifications 

• Series: Series 63, Bent-axis design

• Displacement: $160\text{ cm}^3\text{/rev}$ ($9.76\text{ in}^3\text{/rev}$)

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

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

• Control Type: EP2 (Electro-proportional control with emergency shut-off)

• Max Speed: Up to $2650\text{ rpm}$ (at self-priming)

• Direction of Rotation: Clockwise (R)

• Seals: FKM (Viton) for high-cycle temperature stability

• Mounting: SAE or Metric standard flanges

Key Technical Advantages

• Bent-Axis Efficiency: The 40-degree bent-axis design significantly lowers piston friction compared to swashplate pumps, resulting in an overall efficiency of $97\%$ and a longer operational lifespan under constant high pressure.

• Superior Speed Capability: Due to its compact rotating group and low inertial mass, the A7VO160 can operate at higher RPMs than standard piston pumps, delivering higher flow rates from a smaller package.

• Precise EP2 Proportional Control: The integrated electro-proportional valve allows for seamless displacement adjustment, enabling intelligent power management and fuel savings in mobile equipment.

• Heavy-Duty Bearing Life: Engineered with reinforced bearings and hardened timing surfaces, this pump is designed to survive the harsh vibration and high duty cycles of mining and construction environments.

Application Areas

• Heavy Mobile Equipment: Main pumps for large excavators, rotary drilling rigs, and concrete pumps.

• Industrial HPUs: Powering metal shears, large presses, and scrap balers.

• Offshore & Marine: Driving high-power winches and deck machinery.

Expert Maintenance Tips

• Pre-Operation Priming: Mandatory filling of the pump housing with filtered hydraulic oil through the drain port is required. Failure to prime will cause immediate catastrophic wear on the cylinder block and pistons.

• Inlet Vacuum Check: Ensure the suction line is unobstructed. High vacuum at the inlet will cause cavitation, leading to severe pitting on the valve plate and noisy operation.

• Electrical Maintenance: For EP2 models, regularly inspect the wiring and signal output of the proportional solenoid. Ensure the pilot pressure supply is stable to maintain accurate displacement response.