Shaoyang Victor Hydraulic Co., Ltd.
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400 Bar Continuous Pressure Rexroth Axial Piston Pump for Construction Machinery
Features:
1. Additional Technical Features.
2. Contamination-resistant fluid compatibility.
3. SAE standard flange mounting.
4. Wide viscosity range adaptability.
5. Temperature-compensated volumetric efficiency.
6. Reinforced cast steel housing construction.
7. Axial piston pump with a swashplate mechanism for efficient closed-circuit hydraulic transmission.
8. Variable displacement design ensuring that flow rate is proportional to drive speed and displacement.
9. Infinitely variable flow control by adjusting the swashplate angle.
10. Smooth transition of flow direction when the swashplate passes through the neutral position.
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:
Competitive Advantage:
1. Engineered for diverse applications, the A4VG pump delivers exceptional control and smooth fluid dynamics by adjusting swashplate angles continuously, providing precise variable flow, seamless directional changes, and outstanding safety features with pressure cut-offs and boost functions that significantly enhance system performance as a robust hydraulic pump in complex operating environments.
2. Optimized for efficiency and reliability, the A4VG series features a compact design with high volumetric efficiency, advanced manufacturing, and corrosion-resistant treatments that extend service life and reduce maintenance, delivering consistent performance under extreme conditions as a high-performance axial piston pump in various industrial and mobile applications for superior overall efficiency.
3. 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.
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, oil contamination caused by dirt, moisture, or degraded additives can significantly reduce pump efficiency, increase friction and wear, and lead to suboptimal performance, necessitating regular oil analysis, filtration improvements, and timely oil changes to maintain the integrity of the hydraulic system and ensure consistent operation daily.
2. In this piston pump, continuous vibration and cyclic stress can induce material fatigue in critical components such as pistons, bearings, and seals, leading to premature failure, operational inefficiencies, and increased maintenance costs, which necessitates vibration analysis, structural reinforcement, and timely replacement of fatigued parts to ensure long-term reliability without compromise.
3. In this axial piston pump system, a malfunction in the control algorithm within the digital interface can lead to erroneous adjustments in flow and pressure, causing inefficient operation, increased wear, and unpredictable system behavior, thereby requiring software recalibration, algorithm updates, and expert system diagnostics to restore accurate control promptly today.