Rexroth A4FO71/10R-VZB25 Concrete Pump
advantage -Energy saving: Variable control reduces useless flow and lowers energy consumption. -Reliability: Strengthen bearing and sealing design to adapt to harsh environments. -Modular: Can be integrated with other valves and motors of Rexroth to form an integrated system.
product overview
-Model: A4FO71/10R-VZB25
-Type: Diagonal disc axial piston variable displacement pump
-Series: A4FO series, designed for closed circuits, suitable for medium and high pressure hydraulic systems.
-Displacement: 71 mL/rev (maximum displacement), flow rate can be infinitely adjusted through the angle of the inclined plate.
-Pressure range:
-Maximum working pressure: 400 bar (peak)
-Rated pressure: 350 bar (continuous operation)
-Rotation direction: clockwise (right-handed, viewed from the shaft end)
Key Features
1. Variable control:
-VZB25 represents a variable mechanism with hydraulic proportional control, which adjusts the displacement through external signals (such as pilot pressure or electronic control) to match the flow rate with the system requirements.
-The control method may be load sensitive or pressure compensated (specific control options need to be confirmed).
2. Efficient design:
-Adopting optimized plunger and slide shoe structure to reduce internal leakage and achieve high volumetric efficiency (typical value>95%).
-The inclined plate bearing has a long design life and is suitable for continuous heavy load conditions.
3. Application areas:
-Construction machinery (such as excavators, cranes)
-Industrial hydraulic systems (metallurgy, injection molding machines)
-Ships and mining equipment
4. Integrated functions:
-Built in oil replenishment pump (optional), used for closed-loop oil replenishment and cooling.
-Optional accessories such as high-pressure relief valve and flushing valve.
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