A4V40; A4V56; A4V71; A4V125; A4V250; A4VFO28; A4VSO40; A4VSO71; A4VSO125; A4VSO180; A4VSO250; A4VSO355; A4VSO500; A4VF500 /
A4F500; A4VG28 (A4F028); A4VG50;; A4VG40; A4VG45 A4VG56; A4VG71; A4VTG71; A4VG90 (A4VT90HW / 32R); A4VHW90; A4VTG90 charge pump
(Laid thick); A4VG125; A4VG125 Charge pump; A4VG125 charge pump (general use type); A4VG125 charge pump (A10VO28 string type);
A4VG12 charge pump (large).
A2V225;A2F250;A2V500;A2V915;A2F355;A2F500;A2F1000;A2FO10;A2FO12;A2FO16;A2FO23;A2FO28;A2FO32;A2FO45; A2FO56; A2FO63; A2FO80; A2FO90
/ A2FE90; A2FO107; A2FO125 (A2FM125); A2FO200;; A2FO160; A2FO180 A2FO250; A2FO500; A6V28; A7V55 / A8V55; A7V58; A7V80 / A8V80;
A7V107 / A8V107; A7V160 / A8V160; A7V200; A7V225 ; A7V250; A7V355; A7V500; A6VM / A7V1000; A6VM / A7VO12; A7VO28; A7VO55; A7VO80;
A7VO107; A7VO160; A6VM160; A6VE160; A6VM200; A6VM500; A7VO172; A7VO200; A7VO250; A7VO355; A7VO500.
A11V(L)O SERIES Hydraulic Piston Pump
1. Product Overview
• Brand & Model: The A11V(L)O series is a high-performance hydraulic piston pump manufactured by Bosch Rexroth, widely used in industrial and mobile equipment applications.
• Type: Swashplate-type axial piston variable displacement pump, suitable for open or closed hydraulic circuits.
• Applications:
• Construction Machinery: Excavators, loaders, cranes, etc.
• Industrial Equipment: Injection molding machines, die-casting machines, metallurgical equipment, etc.
• Marine & Offshore Engineering: Deck machinery, propulsion systems, etc.
2. Technical Parameters & Features
• Displacement Range:
• The A11V(L)O series offers multiple displacement options (e.g., 40 cc/rev, 80 cc/rev, 130 cc/rev, etc., depending on the model).
• Pressure Rating:
• Maximum operating pressure up to 350 bar (5075 psi), with some models supporting higher pressures (e.g., 420 bar).
• Control Methods:
• Pressure-Compensated Control: Automatically adjusts displacement to maintain constant system pressure.
• Load-Sensing Control: Dynamically regulates displacement based on load demand, improving energy efficiency.
• Electro-Proportional Control: Precisely controls displacement via electrical signals for automated operation.
• Constant Power Control: Optimizes displacement and pressure under power constraints to protect the system.
• Speed Range:
• Typical operating speed: 600~3000 rpm (varies based on application and system requirements).
• Efficiency:
• High volumetric efficiency (>95%) and mechanical efficiency (>90%), reducing energy consumption and heat generation.
3. Structure & Design
• Swashplate-Type Axial Piston Design:
• Pistons are arranged axially, with displacement adjusted via swashplate angle changes, offering a compact and responsive structure.
• Modular Design:
• Optional control modules (e.g., pressure compensation valves, load-sensing valves, electro-proportional control valves) to adapt to diverse needs.
• Sealing & Durability:
• High-performance seals and wear-resistant materials extend service life and reduce leakage.
• Cooling & Lubrication:
• Built-in lubrication circuit ensures adequate lubrication and cooling for critical components such as pistons and swashplates.
4. Performance Advantages
• High Energy Efficiency:
• Load-sensing and electro-proportional control technologies minimize overflow losses, reducing energy consumption.
• Fast Dynamic Response:
• Rapidly adjusts displacement to adapt to load changes, improving system responsiveness.
• High Reliability:
• Bosch Rexroth brand quality assurance, suitable for heavy-duty and continuous operation conditions.
• Easy Maintenance:
• Modular design facilitates repairs and component replacement, reducing downtime.
5. Application Examples
• Case 1: Hydraulic System for Excavators
• Requirements: Excavators require high-power, high-efficiency hydraulic systems to support arm, bucket, and rotation movements.
• Solution: The A11V(L)O series pump, with load-sensing control, achieves precise flow distribution, reducing energy consumption and improving operational efficiency.
• Case 2: Hydraulic System for Injection Molding Machines
• Requirements: Injection molding machines demand rapid response and stable pressure output to ensure molding quality.
• Solution: The A11V(L)O series pump, with pressure-compensated control, maintains constant system pressure, ensuring the stability of the injection molding process.
6. Selection & Configuration Recommendations
• Displacement Selection:
• Choose an appropriate displacement model (e.g., A11VO40, A11VO80) based on system flow requirements.
• Control Method:
• For automated control, consider electro-proportional control or load-sensing control modules.
• Accessory Configuration:
• Optional pressure sensors, flow sensors, and other accessories enable more precise system monitoring.
7. Maintenance & Upkeep
• Regular Inspections:
• Check oil cleanliness and regularly replace hydraulic oil and filters.
• Inspect pump connections for looseness or leakage.
• Troubleshooting:
• If excessive pump noise occurs, check pistons and swashplates for wear.
• If insufficient output flow is observed, inspect the pump interior for blockages or damaged seals.
8. Summary
The A11V(L)O series hydraulic piston pump is a high-performance, high-reliability axial piston variable displacement pump suitable for hydraulic systems requiring high power and efficiency. Its modular design and diverse control methods enable flexible adaptation to various application scenarios. Through proper selection and maintenance, the A11V(L)O series pump can operate reliably over the long term, providing users with dependable hydraulic power support.
