Shaoyang Victor Hydraulic Co., Ltd.
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450 Bar Peak Pressure Variable Axial Piston Pump Cast Iron for Mobile Crane
Features:
1. Modular design facilitates ease of maintenance and component replacement.
2. Advanced manufacturing processes ensure high precision of internal components.
3. Optimized internal flow paths enhance overall hydraulic efficiency.
4. Low-noise design minimizes operational sound levels.
5. Reliable operation over a wide temperature range, suitable for both high and low ambient conditions.
6. Integrated boost pump for feed and control pressure supply.
7. Built-in low-pressure relief valve for boost pressure limitation.
8. Swashplate-type axial variable piston pump design.
9. Hydrostatic drive in closed circuit applications.
10. Flow proportional to drive speed and displacement.
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 advanced internal flow optimization and energy-efficient design, the A4VG series minimizes pressure losses and maximizes fluid dynamics, ensuring exceptional energy savings, reduced operational costs, and superior performance as a reliable hydraulic pump for various demanding industrial and mobile hydraulic systems worldwide, delivering unmatched reliability every single day.
2. With its advanced integration of safety, control, and performance features, the A4VG series minimizes system downtime, maximizes energy efficiency, and delivers smooth, reliable hydraulic power through its advanced variable displacement technology, establishing it as a highly efficient piston pump for a wide range of critical industrial and mobile applications every single day.
3. Combining robust mechanical design with state-of-the-art variable displacement technology, the A4VG series delivers exceptional performance, precise fluid control, and high energy efficiency, making it a reliable piston pump solution that meets the rigorous demands of modern industrial, mobile, and automated systems around the globe every single day for peak performance.
4. The A4VG series integrates innovative boost pump technology, variable swashplate control, and dual pressure relief systems, providing enhanced system safety, precise fluid dynamics, and optimal energy conversion, making it a versatile hydraulic pump that outperforms competitors in efficiency, reliability, and overall performance across various industrial and mobile applications every day.
The Analysis For Rexroth A4VG Closed Circuit Piston Pump Common Breakdown :
1. In this hydraulic pump, blockage or contamination within the internal flow channels can restrict fluid movement, causing a drop in efficiency, increased internal pressure, and potential damage to pump components, which necessitates thorough cleaning, fluid replacement, and inspection of internal channels to ensure sustained optimal performance and longevity without compromise.
2. In this axial piston pump system, malfunction or communication errors in the integrated digital interface and remote diagnostics can lead to inaccurate monitoring, delayed fault detection, and suboptimal control adjustments which may compromise overall system reliability, necessitating software updates, hardware inspections, and expert troubleshooting to restore digital functionality without compromise.
3. 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.