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5 month ago
Product details
1. Product Overview
TheA11VO145LRDS/11Ris a high-performance axial piston variable displacement pump manufactured byRexroth (Bosch Rexroth Group), designed for open-circuit hydraulic systems. It is widely used in construction machinery, mining equipment, industrial machinery, and other applications requiring high pressure and efficiency. Key features includehigh pressure resistance, high efficiency, long service life, and flexible control options.
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2. Key Specifications
1. Displacement: 145 cm³/rev (145 cubic centimeters per revolution), suitable for medium-to-high flow applications.
2. Nominal Pressure: 350 bar (35 MPa), with a maximum pressure of400 bar (40 MPa)for extreme operating conditions.
3. Speed Range:
• Rated speed: ~2,200 rpm
• Maximum speed: Up to2,500 rpmfor high-speed drives.
4. Control Modes:
• LR Power Control: Automatically adjusts displacement based on working pressure to maintain constant power output.
• DR Pressure Control: Maintains stable system pressure for precise pressure regulation.
• HD Hydraulic Control: Remote control via pilot pressure for fast response.
• EP Electro-Proportional Control: Stepless displacement adjustment via electrical signals for intelligent control.
5. Mounting Type: Flange-mounted for compact integration into hydraulic systems.
6. Weight: Approximately76–152 kg(depending on configuration), suitable for both mobile and stationary installations.
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3. Product Features
1. High-Efficiency Design:
• Axial piston swashplate structure ensures highvolumetric and mechanical efficiency, reducing energy consumption.
• Spherical valve plate design enables automatic centering, minimizing wear and extending service life.
2. Long-Life Bearing System:
• Drive shaft withstands radial loads, adapting to complex operating conditions.
• Optimized bearing design reduces friction and noise, with a lifespan exceeding10,000 hours.
3. Flexible Control Options:
• Supports multiple control modes for diverse applications (e.g., mobile machinery, industrial hydraulics).
• External power control adjustment allows parameter modification without shutdown.
4. Through-Drive Capability:
• Enables stacking of gear pumps or identical axial piston pumps to expand flow capacity.
5. Harsh Environment Adaptability:
• Operating temperature range:-25°C to +115°C, suitable for extreme temperatures.
• Compatible with mineral oil-based hydraulic fluids; some models support environmentally friendly fluids (verify specifications).
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4. Typical Applications
1. Construction Machinery:
• Travel drives and swing systems in excavators, loaders, and cranes.
• Main hydraulic pumps for concrete pump trucks and rotary drilling rigs.
2. Mining Equipment:
• Hydraulic transmission systems for roadheaders and shearers.
• Steering and braking systems for mining trucks.
3. Industrial Machinery:
• Hydraulic power sources for injection molding machines and die-casting machines.
• Hydraulic control systems in steel, metallurgy, and papermaking industries.
4. Specialized Fields:
• Deck machinery and elevators on offshore vessels.
• Hydraulic drive systems for oil drilling platforms.
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5. Technical Advantages
1. Stepless Variable Displacement: Output flow is proportional to drive speed, adjustable from zero to maximum for varying loads.
2. High Power Density: Compact design delivers high power output per unit volume, saving installation space.
3. Low-Noise Operation: Optimized flow path design reduces hydraulic shock, with noise levels below75 dB(A).
4. Easy Maintenance: Modular design simplifies replacement of wear parts, lowering maintenance costs.
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6. Selection & Configuration Recommendations
1. Choose Control Mode Based on Operating Conditions:
• For constant power output, prioritizeLR Power Control.
• For precise pressure regulation, selectDR Pressure ControlorEP Electro-Proportional Control.
2. Confirm Hydraulic Fluid Compatibility:
• Default compatibility with mineral oil-based fluids; verify support for environmentally friendly fluids (e.g., HFC water-glycol) if required.
3. Consider Through-Drive Needs:
• For expanded flow, opt for models with through-drive capability to stack additional pumps.
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