A11VO260LRDS Variable Displacement Piston Pump
4 month ago
Product details
A11VO260LRDS Variable Displacement Piston Pump: Detailed Introduction
I. Product Overview
TheA11VO260LRDSis aswash-axis variable displacement piston pumpmanufactured by Bosch Rexroth, part of the A11VO series. Featuring a swash-axis design, this pump offers high efficiency, reliability, and long service life. It is widely used in hydraulic systems across industries such asmachine tools, metallurgy, forging and pressing, mining, cranes, and other industrial applications, particularly inhigh-power hydraulic transmission systems.
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II. Technical Specifications
• Model: A11VO260LRDS/11R-NZD12K83
• Displacement: 260 cm³/rev (260 mL per revolution)
• Rated Pressure: 350 bar (maximum operating pressure up to 400 bar)
• Speed Range: Up to 1,800 rpm (adjusted based on actual application requirements)
• Control Method: Pressure and flow composite control (LRDS models typically feature constant power control, pressure cut-off, etc.)
• Pump Weight: Approximately 125 kg
• Rotation Direction: Clockwise (R, observed facing the drive shaft)
• Port Positions: Ports on both sides for flexible system layout
• Pump Type: Axial piston pump (swash-axis design)
• Operating Temperature Range: -25°C to +115°C
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III. Structural Features
1. Swash-Axis Design:
• Pistons are arranged at an angle to the drive shaft, enabling displacement adjustment by varying the swash-axis angle.
• Compared to swash-plate designs, swash-axis pumps offer higher mechanical efficiency and better resistance to contamination.
2. Variable Control:
• Equipped with built-in variable mechanisms (e.g., constant power control valves, pressure cut-off valves) for automatic displacement adjustment.
• Adjusts pump output flow based on system load demands, achieving energy savings and system protection.
3. High-Strength Materials:
• Pump body constructed from high-strength cast iron or alloy steel for reliability under high-pressure, high-speed conditions.
• Critical friction pairs (e.g., pistons and cylinder blocks, valve plates) use specialized materials or surface treatments to enhance wear resistance and longevity.
4. Modular Design:
• Modular components (pump body, control valves, ports) simplify maintenance and replacement.
• Optional control valves or accessories (e.g., flushing valves, charge pumps) can be added based on user requirements.
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IV. Performance Advantages
1. High Efficiency:
• Reduced mechanical friction losses due to swash-axis design improve volumetric and mechanical efficiency.
• Variable control optimizes output flow to match system demands, minimizing energy waste.
2. High Reliability:
• Key components use high-strength materials and precision machining for long-term stable operation.
• Built-in multi-layer protection (e.g., pressure cut-off, overload protection) prevents system damage.
3. Long Service Life:
• Optimized oil film design reduces wear on friction pairs, extending pump lifespan.
• Strong contamination resistance adapts to varying hydraulic oil qualities, reducing maintenance costs.
4. Low Noise:
• Optimized flow path design and vibration damping measures reduce operational noise, improving workplace conditions.
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V. Application Fields
The A11VO260LRDS is widely used in:
• Machine Tools: CNC machines, machining centers, presses.
• Metallurgy: Steelmaking, rolling mills, continuous casting equipment.
• Forging & Pressing: Forging machines, stamping presses, hydraulic presses.
• Mining: Excavators, loaders, crushers.
• Cranes: Truck cranes, crawler cranes, tower cranes.
• Other: Marine deck machinery, wind power equipment, construction machinery.
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VI. Installation & Maintenance
1. Installation Precautions:
• Ensure a stable mounting base to avoid vibration and resonance.
• Align pump rotation direction with the drive motor to prevent reverse rotation damage.
• Seal port connections reliably to prevent leaks and air ingress.
• Clean system pipelines before installation to avoid contaminant entry.
2. Maintenance Recommendations:
• Regularly inspect hydraulic oil cleanliness and level; replace or top up as needed.
• Clean or replace hydraulic oil filters periodically to prevent contaminant entry.
• Monitor pump operational status (e.g., noise, vibration, temperature) and address abnormalities promptly.
• Implement rust prevention measures during long-term shutdowns to avoid internal corrosion.
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