Shaoyang Victor Hydraulic Co., Ltd.
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Closed Circuit Construction Machinery Piston Pump Cast Iron housing 400 Bar Pressure
Features:
1. High volumetric efficiency design helps reduce energy consumption.
2. Compact construction saves installation space and facilitates system integration.
3. Superior mechanical sealing technology ensures leak-free operation.
4. High dynamic response performance accommodates rapid and transient load changes.
5. Constructed with high-strength materials to enhance durability and service life.
6. Modular design facilitates ease of maintenance and component replacement.
7. Advanced manufacturing processes ensure high precision of internal components.
8. Optimized internal flow paths enhance overall hydraulic efficiency.
9. Low-noise design minimizes operational sound levels.
10. Reliable operation over a wide temperature range, suitable for both high and low ambient conditions.
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:
Competitive Advantage:
1. With its integrated boost pump and dual pressure relief valves, the A4VG series offers advanced safety and protection features, ensuring the hydraulic system remains secure and reliable during overload conditions, sudden load spikes, and extreme operating environments as a robust hydraulic pump in complex operating environments.
2. Designed with modular construction and advanced sealing technology, the A4VG series ensures easy maintenance and quick component replacement, reducing downtime and maintenance costs while delivering precise hydraulic control and reliable power output as a robust piston pump that meets rigorous industry standards and challenging operational requirements for exceptional high performance.
3. Incorporating advanced manufacturing processes and high-precision components, the A4VG series achieves superior internal alignment and fluid dynamics, resulting in minimal energy losses, enhanced efficiency, and extended service life as a cutting-edge axial piston pump ideal for high-demand industrial, mobile, and automated systems requiring consistent and reliable hydraulic performance every day.
4. Utilizing an innovative swashplate mechanism for infinite flow adjustment, the A4VG series delivers smooth flow transitions, variable displacement control, and exceptional energy efficiency, making it a preferred axial piston pump for applications requiring precise hydraulic regulation, rapid response to load changes, and robust performance under diverse operating conditions every day.
The Analysis For Rexroth A4VG Closed Circuit Piston Pump Common Breakdown :
1. In this hydraulic pump, inadequate thermal management or cooling system malfunction can cause excessive overheating during prolonged operation, leading to deterioration of hydraulic fluid properties, accelerated wear of components, and potential system shutdown, thereby necessitating improved heat dissipation, regular temperature monitoring, and prompt maintenance to prevent critical failures for reliability.
2. In this piston pump system, malfunction or misadjustment of the pressure relief valves can result in erratic pressure regulation, causing unexpected pressure surges, inefficient energy utilization, and increased wear on hydraulic components, thereby requiring immediate troubleshooting, precise recalibration, and potential replacement to maintain optimal system safety and performance without any delay.
3. In this axial piston pump configuration, a malfunction in the integrated boost pump can result in inadequate feed pressure and compromised control pressure supply, leading to unstable system operation, reduced performance, and damage to the hydraulic circuit which mandates immediate diagnosis, repair, and replacement of faulty components to restore functionality.