A4VG71 Variable Axial Piston Pump 3300 RPM Cast Iron Mobile Crane
Applications
Features:
1. Smooth transition of flow direction when the swashplate passes
through the neutral position.
2. Equipped with a wide range of highly adaptable control devices
for diverse operational regulation.
3. Dual high-pressure relief valves on the high-pressure side to
effectively protect the hydraulic transmission from overload.
4. High-pressure relief valves also serve as boost valves,
enhancing transient system responsiveness.
5. Integrated boost pump functions both as a feed pump and as a
source for control pressure.
6. Built-in low-pressure relief valve limits the maximum boost
pressure to ensure system safety.
7. Standard integrated pressure cut-off feature provides automatic
system protection.
8. Swashplate-type axial piston variable pump design.
9. Application in closed-circuit hydrostatic drive.
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. Engineered for solar tracking systems, the A4VG series hydraulic
pump delivers precise fluid power and control essential for
adjusting solar panel angles throughout the day. Its variable
displacement design enables smooth and accurate tracking
performance under varying environmental conditions, optimizing
energy capture. Integrated boost features and dual relief valves
provide reliable safety and protect against system overload. This
innovative pump solution enhances the responsiveness and efficiency
of solar tracking mechanisms, contributing to improved renewable
energy performance in modern solar installations.
2. Optimized for solar tracking applications, the A4VG series piston
pump delivers stable hydraulic power and precise fluid control to
adjust solar panel orientations accurately. Its variable
displacement mechanism adapts to changing sunlight conditions and
mechanical loads, ensuring optimal tracking performance and maximum
energy harvest. Integrated boost features and dual relief valves
safeguard the system from overload, providing dependable operation.
This hydraulic solution enhances the efficiency and reliability of
solar tracking systems, making it a choice for modern renewable
energy installations.
3. Designed for hydraulic auxiliary systems, the A4VG series
hydraulic pump offers fluid power and precise control to support
supplementary hydraulic functions. Its variable displacement design
ensures flexible performance and efficient energy use in auxiliary
circuits. Integrated boost features and dual relief valves provide
enhanced safety and prevent overload, ensuring stable system
operation. This pump solution improves overall system reliability,
reduces maintenance requirements, and is integrated into various
hydraulic frameworks, making it an important component in auxiliary
hydraulic applications for efficiency.
4. Engineered for auxiliary hydraulic systems, the A4VG series piston
pump delivers consistent fluid power and precise control to support
hydraulic functions in diverse industrial applications. Its
variable displacement mechanism adapts to varying operational
demands, ensuring reliable performance and energy efficiency.
Integrated boost features and dual relief valves protect the system
from overloads and pressure spikes. This hydraulic solution
enhances overall system performance, reduces maintenance needs, and
integrates with existing hydraulic networks, making it a preferred
choice for auxiliary hydraulic applications.
Competitive Advantage:
1. Combining exceptional dynamic response with high-pressure
protection features, the A4VG series maintains smooth fluid
direction changes and continuous flow regulation under varying
loads, ensuring optimal system safety and performance in both
industrial and mobile environments as a reliable piston pump
designed to meet the stringent operational demands and efficiency
criteria.
2. Leveraging its compact and modular design, the A4VG series
simplifies system integration and installation in confined spaces,
while offering exceptional fluid control and energy efficiency as a
versatile axial piston pump, ensuring rapid deployment, minimal
downtime, and high operational reliability in diverse industrial
and mobile hydraulic applications every single day.
3. Designed to operate reliably under extreme temperatures and load
fluctuations, the A4VG series features advanced thermal management
and precise pressure regulation, ensuring optimal performance and
energy efficiency as a dependable hydraulic pump, making it an
ideal solution for applications in harsh industrial environments
and mobile systems requiring high-quality fluid power.
4. Featuring robust construction and high-strength materials, the
A4VG series delivers excellent durability and resistance to wear
and tear, ensuring reliable performance and reduced maintenance
requirements, making it a cost-effective and high-efficiency
hydraulic pump for continuous use in demanding industrial, mobile,
and automated applications worldwide, delivering outstanding
performance every single day.
The Analysis For Rexroth A4VG Closed Circuit Piston Pump Common Breakdown :
1. In this hydraulic pump, excessive pressure drop across internal
flow channels can occur due to blockage, wear, or design
inefficiencies, leading to reduced fluid power, diminished overall
performance, and increased energy consumption, which necessitates
thorough inspection, channel cleaning, and potential design
modifications to restore optimal pressure distribution and
efficiency immediately.
2. In this piston pump system, improper integration with the external
hydraulic network can result in mismatched pressure levels, erratic
fluid flow, and communication errors between system components,
causing overall performance degradation, increased wear, and
potential system shutdown, thereby requiring comprehensive system
compatibility checks and integration adjustments for full
restoration immediately.
3. In this axial piston pump, exposure to excessive ambient
temperatures combined with heavy load conditions can lead to
overheating, accelerated fluid degradation, increased component
wear, and eventual system failure, which necessitates enhanced
cooling measures, load management, and environmental controls to
maintain safe and reliable operation under strenuous conditions for
longevity.
