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:
1. Designed for off-road and all-terrain vehicles, the A4VG series
piston pump delivers robust hydraulic performance and energy
efficiency in challenging mobility conditions. Its variable
displacement capability adapts to varying load demands, ensuring
smooth operation on uneven surfaces and during rapid maneuvering.
With integrated safety features including boost functions and dual
relief valves, it provides reliable power delivery and protection
against overload. This advanced pump technology enhances vehicle
agility and performance in rugged environments, contributing to
increased operational efficiency and durability.
2. Tailored for industrial automation production lines, the A4VG
series hydraulic pump delivers precise fluid control and consistent
power supply for automated machinery. Its variable displacement
technology ensures smooth operation across high-speed processes and
rapid cycle production, reducing energy waste and enhancing
efficiency. Integrated boost features and dual relief valves
provide robust safety and operational stability, making it ideal
for high-demand manufacturing environments. This innovative pump
solution optimizes performance, minimizes downtime, and supports
advanced automation systems in modern industrial facilities
effectively.
3. Designed for hydraulic test and trial benches, the A4VG series
axial piston pump offers exceptional precision and control for
equipment testing and system validation. Its variable displacement
design enables accurate simulation of diverse operational
scenarios, ensuring reliable performance under controlled
conditions. Integrated boost capabilities and dual relief valve
safety measures facilitate thorough performance analysis and stress
testing. This pump solution is essential for diagnostic procedures,
calibration processes, and development trials, providing consistent
and dependable hydraulic power during rigorous experimental
evaluations.
4. Designed for rail vehicle hydraulic systems, the A4VG series
axial piston pump delivers precise fluid control and robust power
output, ensuring smooth operation in high-demand railway
applications. Its variable displacement technology adapts to rapid
load fluctuations during acceleration, braking, and curve
negotiation. Integrated boost functions and dual relief valve
safety features enhance performance and reliability under
continuous operation. This advanced pump solution improves system
efficiency, reduces energy loss, and contributes to safe, reliable
rail transportation in modern train control systems.
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.
