A4VG Harvesting Machinery Piston Pump 450 Bar Peak for Heavy-Duty Hydraulic System
Features:
1. Swashplate-type axial piston variable pump design.
2. Application in closed-circuit hydrostatic drive.
3. Flow proportional to drive speed and displacement.
4. Infinitely variable flow via swashplate angle adjustment.
5. Smooth flow direction reversal via neutral swashplate position.
6. Multiple adaptable control device configurations.
7. Dual high-pressure relief valves for overload protection.
8. High-pressure relief valves with integrated boost function.
9. Integrated boost pump for feed and control pressure supply.
10. Built-in low-pressure relief valve for boost pressure limitation.
Technical data:
| Size | NG | 56 | 71 | 90 | 125 | 180 |
| Geometric displacement, per revolution | variable pump | Vg max | cm3 | 56 | 71 | 90 | 125 | 180 |
| boost pump (at Δp = 20 bar) | Vg Sp | cm3 | 11.6 | 19.6 | 19.6 | 28.3 | 39.8 |
| Rotational speed | maximum at Vg max | nnom | rpm | 3600 | 3300 | 3050 | 2850 | 2500 |
| limited maximum | nmax1 | rpm | 3900 | 3600 | 3300 | 3250 | 2900 |
| intermittent maximum | nmax2 | rpm | 4500 | 4100 | 3800 | 3450 | 3000 |
| minimum | nmin | rpm | 500 | 500 | 500 | 500 | 500 |
| Flow | at nnom and Vg max | qv | l/min | 202 | 234 | 275 | 356 | 450 |
Power
at nnom, Vg max | Δp = 400 bar | P | kW | 134 | 156 | 183 | 238 | 300 |
| Torque with Vg max | Δp = 400 bar | M | Nm | 357 | 452 | 573 | 796 | 1146 |
| Δp = 100 bar | M | Nm | 89 | 113 | 143 | 199 | 286 |
| Rotary stiffness of drive shaft | S | c | kNm/rad | 80.8 | 98.8 | 158.1 | 218.3 | 244.5 |
| T | c | kNm/rad | 95 | 120.9 | – | 252.1 | 318.4 |
| A | c | kNm/rad | 95.8 | 142.4 | 176.8 | 256.5 | – |
| Z | c | kNm/rad | 78.8 | 122.8 | 137 | 223.7 | 319.6 |
| U | c | kNm/rad | – | – | 107.6 | – | – |
| Moment of inertia of the rotary group | JTW | kgm2 | 0.0066 | 0.0097 | 0.0149 | 0.0232 | 0.0444 |
| Maximum angular acceleration | α | rad/s² | 24000 | 21000 | 18000 | 14000 | 11000 |
| Case volume | V | l | 1.5 | 1.3 | 1.5 | 2.1 | 3.1 |
| Weight (without through drive) approx. | m | kg | 38 | 50 | 60 | 80 | 101 |
Specifications:
| Warranty | 1 Year |
| Model | A4VG series |
| Place of Origin | China |
| Type | Harvesting machinery piston pump |
| Color | Available any color |
| Type | Hydraulic pump Rexroth |
| Application | Mining equipment |
| Feature | High Efficiency,Long Life |
| Delivery Time | 15-30 Days after Payment |
| Condition | Brand new |
Applications:
1. Designed for rail vehicle hydraulic systems, the A4VG series axial piston pump delivers precise fluid control and robust power output, ensuring smooth operation in high-demand railway applications. Its variable displacement technology adapts to rapid load fluctuations during acceleration, braking, and curve negotiation. Integrated boost functions and dual relief valve safety features enhance performance and reliability under continuous operation. This advanced pump solution improves system efficiency, reduces energy loss, and contributes to safe, reliable rail transportation in modern train control systems.
2. Engineered for modern rail applications, the A4VG series hydraulic pump provides consistent fluid delivery and precise pressure regulation essential for efficient train braking and acceleration systems. Its variable displacement design handles dynamic load variations with ease, ensuring optimal performance during peak operational periods. Equipped with integrated boost features and dual relief valves, the pump safeguards against pressure spikes and system overloads. This innovative solution enhances overall railway system reliability, contributing to safer and more energy-efficient rail transportation networks. Highly effective.
3. Optimized for screening and crushing machinery, the A4VG series axial piston pump delivers fluid control essential for precise operation in material processing applications. Its variable displacement design allows adaptation to fluctuating load conditions during crushing and screening cycles. Integrated boost features and dual relief valves ensure operational safety and maintain consistent performance under heavy mechanical stress. This pump solution enhances the efficiency and reliability of crushing and screening systems, reducing downtime and maintenance requirements in industrial processing plants for industries.
4. Engineered for heavy-duty screening and crushing operations, the A4VG series piston pump provides exceptional fluid control and power management for material processing systems. Its variable displacement design ensures optimal performance during high-impact crushing and continuous screening cycles, while integrated boost and safety features protect against overloads. The robust design minimizes wear and downtime, enhancing overall system productivity and reliability. This innovative hydraulic solution is ideal for industrial crushers and screeners, delivering efficient performance in demanding material handling environments with excellence.
Competitive Advantage:
1. Designed to operate reliably under extreme temperatures and load fluctuations, the A4VG series features advanced thermal management and precise pressure regulation, ensuring optimal performance and energy efficiency as a dependable hydraulic pump, making it an ideal solution for applications in harsh industrial environments and mobile systems requiring high-quality fluid power.
2. Engineered with a focus on energy conservation and reduced operational costs, the A4VG series employs advanced variable displacement technology, integrated boost features, and dual pressure relief valves to deliver consistent, efficient performance as a high-quality axial piston pump, making it an outstanding choice for eco-friendly industrial and mobile applications today.
3. Featuring robust construction and high-strength materials, the A4VG series delivers excellent durability and resistance to wear and tear, ensuring reliable performance and reduced maintenance requirements, making it a cost-effective and high-efficiency hydraulic pump for continuous use in demanding industrial, mobile, and automated applications worldwide, delivering outstanding performance every single day.
4. Offering precise control over flow and pressure, the A4VG series utilizes cutting-edge variable displacement mechanisms and integrated safety features to ensure rapid responsiveness and optimal energy usage, positioning it as a top-tier piston pump ideal for both high-performance industrial systems and dynamic mobile applications that demand consistent fluid power today.
The Analysis For Rexroth A4VG Closed Circuit Piston Pump Common Breakdown :
1. In this hydraulic pump, excessive vibration and abnormal noise levels can indicate mechanical imbalances, wear in rotating components, or internal structural defects, which may lead to premature failure, decreased efficiency, and potential safety hazards, thereby requiring detailed vibration analysis, noise monitoring, and corrective mechanical adjustments to restore smooth operation immediately.
2. In this piston pump, gradual wear of internal components such as valves and seals can reduce volumetric efficiency, leading to decreased flow output, increased energy consumption, and overall performance degradation, which necessitates regular monitoring, timely maintenance, and component replacement to restore efficient operation and extend the pump’s service life effectively.
3. In this axial piston pump, failure of the integrated pressure cut-off mechanism can result in uncontrolled pressure build-up, increasing the risk of system overload, component damage, and unsafe operating conditions, thereby necessitating immediate inspection, recalibration, and possible replacement of the cut-off components to restore proper pressure regulation for safe operation.
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A4VG Harvesting Machinery Piston Pump 450 Bar for Heavy Duty Hydraulic System Images
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