A4VG125 Construction Machinery Piston Pump 2850 RPM Cast Iron for Marine Hydraulic
Features:
1. Integrated temperature monitoring system ensures real-time equipment safety
2. Optional digital interface enables smart monitoring and remote diagnostics
3. High-efficiency oil circuit design minimizes pressure losses and optimizes energy efficiency
4. Corrosion-resistant surface treatment makes it suitable for harsh operating environments
5. Rapid pressure adjustment response guarantees stable hydraulic output
6. Automatic oil replenishment function extends continuous operating time
7. Flexible mounting options accommodate various installation scenarios and operating conditions
8. Consistent performance maintained under high pressure, temperature, and load conditions
9. Optimized internal design minimizes energy losses, enhancing overall system efficiency
10. Rigorously tested and certified to meet international hydraulic system standards
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 | SY-A4VG |
| Place of Origin | China |
| Type | Costruction machinery piston pump |
| Color | Available any color |
| HS Code | 8413503190 |
| Application | excavator, road rollers, pavers |
| Feature | High Quality |
| Delivery Time | 15-30 Days after Payment |
| MOQ | 1 Piece |
Applications:
1. Engineered for heavy transport and crane systems, the A4VG series axial piston pump delivers hydraulic performance and fluid control for demanding lifting operations. Its variable displacement technology adjusts output instantly to meet fluctuating load requirements, ensuring smooth hoisting and movement. Integrated boost features and dual relief valves provide superior safety and protection against overload. This advanced pump solution enhances operational efficiency, reduces maintenance intervals, and supports rigorous performance standards, making it an optimal choice for modern heavy-duty transport and crane machinery.
2. Optimized for concrete mixer systems, the A4VG series hydraulic pump delivers fluid power and precise pressure control required for mixing and transport of concrete. Its variable displacement design ensures consistent output despite varying load conditions during mixing cycles. Integrated boost features and dual relief valves protect the system from pressure surges, enhancing safety and durability. This pump solution improves mixing consistency and operational efficiency while reducing energy consumption and downtime, making it an essential component in concrete mixer hydraulic systems.
3. Engineered for concrete mixing applications, the A4VG series piston pump delivers reliable fluid power and precise pressure regulation to support concrete blending and transport. Its variable displacement mechanism adapts to load variations during mixing cycles, ensuring consistent performance and reduced wear. Integrated boost features and dual relief valves offer enhanced safety and protection against pressure spikes. This hydraulic solution optimizes concrete mixer operations, minimizes downtime, and improves overall efficiency, making it a preferred choice for demanding concrete mixer hydraulic systems.
Competitive Advantage:
1. Combining exceptional dynamic response with high-pressure protection features, the A4VG series maintains smooth fluid direction changes and continuous flow regulation under varying loads, ensuring optimal system safety and performance in both industrial and mobile environments as a reliable piston pump designed to meet the stringent operational demands and efficiency criteria.
2. Leveraging its compact and modular design, the A4VG series simplifies system integration and installation in confined spaces, while offering exceptional fluid control and energy efficiency as a versatile axial piston pump, ensuring rapid deployment, minimal downtime, and high operational reliability in diverse industrial and mobile hydraulic applications every single day.
3. 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.
4. 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.
The Analysis For Rexroth A4VG Closed Circuit Piston Pump Common Breakdown :
1. In this axial piston pump system, blockage or contamination within the integrated boost pump can hinder proper feed pressure generation, leading to insufficient control pressure, erratic system behavior, and reduced overall performance, which necessitates immediate cleaning, fluid replacement, and thorough inspection of the boost pump assembly to restore functionality promptly.
2. In this hydraulic pump, misalignment of the swashplate can cause uneven force distribution, increased mechanical stress, accelerated wear on pistons and bearings, and reduced control accuracy, thereby necessitating precise realignment, regular calibration, and mechanical adjustments to restore balance and ensure smooth, efficient operation of the pump system without further delay.
3. In this piston pump, simultaneous failure of the dual pressure relief valves under overload conditions can result in uncontrolled pressure surges, jeopardizing system safety, damaging critical components, and causing operational interruptions, which necessitates immediate inspection, testing, and replacement of the relief valves to restore proper overload protection without any delay.
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