Shaoyang Victor Hydraulic Co., Ltd.
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A4VG56 Rexroth Axial Piston Pump 3600 RPM for Mobile Machinery Hydraulics
Features:
1. Continuous high-pressure operation (400bar).
2. 450bar peak pressure capability.
3. Bi-directional displacement control.
4. Optional integrated flushing valve.
5. Intelligent power limitation feature.
6. Cold-start assistance design.
7. Vibration and noise reduction technology.
8. Modular control interface configuration.
9. Case drain monitoring port.
10. Long-life bearing and seal system.
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. The A4VG series offers unmatched efficiency and reliability in high-pressure closed-circuit hydraulic drives, combining variable displacement design with integrated boost features, dual relief valves, and advanced mechanical sealing to ensure optimal energy utilization, durability, and performance in demanding industrial and mobile applications as a high-quality axial piston pump every day.
2. Featuring variable displacement technology and high dynamic response, the A4VG series ensures consistent hydraulic power output even under rapid load changes, providing reliable energy conversion, minimal energy losses, and long service life while delivering precise control and performance as a dependable piston pump for modern automated and mobile systems remarkably.
3. 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.
4. 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.
The Analysis For Rexroth A4VG Closed Circuit Piston Pump Common Breakdown :
1. 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.
2. 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.
3. In this axial piston pump, excessive noise levels can be an early indicator of internal damage such as worn bearings, misaligned components, or cavitation effects, prompting further investigation, detailed diagnostic testing, and immediate remedial actions to prevent further deterioration and restore quiet, efficient operation, ensuring optimal performance and safety consistently.