Guangdong Yanhui Hydraulic Co., Ltd. is one of the leading manufacturers and suppliers of Rexroth A11VLO in China. We warmly welcome you to wholesale bulk Rexroth A11VLO for sale here from our factory. If you have any enquiry about pricelist and quotation, please feel free to email us.
Product Overview
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The Bosch Rexroth A11VLO is a high-performance, open-circuit axial piston variable pump engineered specifically for heavy-duty industrial and mobile machinery. Designed as a cornerstone of high-pressure hydraulic architectures, the A11VLO series delivers precise displacement regulation, exceptional power density, and reliable continuous operation under high working pressures. Its robust swashplate design makes it the ultimate choice for critical, high-precision hydraulic control applications, including dynamic power management, accurate load sensing, and energy-efficient secondary control circuits.
Key Advantages
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- High Energy Efficiency: Power-matched flow control reduces heat generation and energy waste.
- Robust Design: Optimized for tough working environments, extending the operational lifespan.
- Low Operating Noise: The interior structure is built to dampen pulsation and reduce environmental noise.
- Excellent Suction Capacity: Operates smoothly even during cold starts or at higher rotational speeds.
- Versatile Control Options: Multiple electronic, pressure, and load-sensing controls are available to match different needs.
Technical Specifications
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| Parameter | Unit | Value / Range |
| Nominal Pressure (Nominal / Peak) | bar | 350 / 400 |
| Frame Sizes / Displacements | cm3/rev | 40, 60, 75, 95, 130, 190, 260 |
| Maximum Continuous Speed (at size 130) | rpm | 2100 |
| Fluid Temperature Range | degree C | -25 to +90 |
| Operating Viscosity Range | mm2/s | 16 to 36 |
| Maximum Allowed Viscosity (Cold Start) | mm2/s | 1600 |
| Hysteresis (Control Precision) | % | Less than 1.0 |
| Response Time (Swashplate dynamic movement) | ms | 50 to 120 (depends on control type) |
| Fluid Cleanliness Class Requirement | ISO 4406 | Class 19/17/14 |
Applications
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- Heavy Duty Excavators and Cranes: Drives main hydraulic boom and track functions, regulating load-sensing power output to optimize overall fuel efficiency.
- Plastic Injection Molding Machines: Provides exact dynamic flow control during the high-pressure holding and injection phases to maintain product consistency.
- Industrial Hydraulic Presses: Manages severe pressure ramps and holding cycles during deep drawing and forging applications.
- Mining Machinery and Tunnel Boring Units: Delivers steady, high-pressure output to hydraulic cutter heads and continuous conveyance systems.
Related Models
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| Model Code | Frame Size | Control Type | Primary Application Profile |
| A11VLO 040 DR/10R-NZC12N00 | 40 | DR (Pressure Control) | Standard constant pressure systems |
| A11VLO 075 DFR1/10L-NSD12K01 | 75 | DFR1 (Load Sensing) | Flow demand systems for mobile machinery |
| A11VLO 130 LRDU2/10R-NZD12K02 | 130 | LRDU2 (Power Control) | Heavy excavators and high-torque machinery |
| A11VLO 190 EP2D/11R-NZD12N00 | 190 | EP2 (Proportional Electric) | Automated and remote electronic steering systems |
| A11VLO 260 HD1D/11L-NSD12K00 | 260 | HD (Hydraulic Pilot Control) | Ultra-heavy industrial presses and marine gear |
FAQ
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Q1: What is the main difference between an open-circuit pump like the A11VLO and a closed-circuit pump?
A1: In an open-circuit pump like the A11VLO, fluid is drawn directly from a hydraulic reservoir tank and returned back to the tank after passing through the system valves and motors. Closed-circuit pumps return fluid directly back into the pump inlet without it resting in a large tank first. Open circuits are simpler to cool and filter.
Q2: How does the "Load Sensing" (DFR1) function save energy?
A2: Load sensing allows the pump to monitor how much pressure and flow the actual machinery requires at any given moment. Instead of pumping at maximum capacity all the time, the pump angles its internal swashplate down to match the exact workload, minimizing excess heat and reducing engine fuel consumption.
Contact Us
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Request a Quote Today to ensure your hydraulic system performs at its best with genuine components from Yanhui Hydraulic.
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