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A7VO
Xeriwell or Others
The Rexroth A7VO axial piston pump is a high-performance, variable displacement pump with a bent-axis design, engineered for hydrostatic drives in open circuits. It offers reliable and efficient operation across both mobile and stationary applications, ensuring durability and precise control even under demanding conditions.
Key Features:
1）Variable Displacement Design: Equipped with an axial tapered piston rotary group, the A7VO pump allows the flow to be infinitely varied by adjusting the bent axis. This ensures precise flow control proportional to drive speed and displacement, optimizing system performance.
2）Versatile Applications: Designed for use in both mobile and stationary systems, the A7VO pump provides adaptability for diverse industries such as construction, agriculture, and material handling.
3）Compact and Robust Construction: Built with a durable bent-axis mechanism, the pump ensures a long service life while maintaining a compact form factor ideal for space-constrained systems.
4）Wide Selection of Control Devices: Offers a variety of control options, including proportional, pressure, and load-sensing controls, enabling tailored functionality to meet specific application requirements.
5）High Pressure Capability: Operates at nominal pressures of up to 350 bar and maximum pressures of 400 bar, delivering dependable performance under high-load conditions.
The Rexroth A7VO pump combines innovative engineering with proven reliability, making it a trusted solution for hydraulic systems requiring flexible operation, robust design, and high efficiency.
Type: A7VO28, A7VO55, A7VO80, A7VO107, A7VO160, A7VO250, A7VO355, A7VO500
Rexroth A7VO 28/55/80/107/160/200/250/355/500 Hydraulic Pump spare parts list:
| Table of values (theoretical values,without considering ηmhand ηv;values rounded off) | |||||||
| Size | NG | 250 | 355 | 500 | |||
| High-Speed-Version | 250H | ||||||
| Displacement | Vg max1) | cm3 | 250 | 250 | 355 | 500 | |
| Vg min1) | cm3 | 0 | 0 | 0 | 0 | ||
| Speed maximum2)4) | at Vg max | nnom | 1500 | 1800 | 1320 | 1200 | |
| Speed maximum3)4) | at Vg≤ Vg max | nmax | 1800 | – | 1600 | 1500 | |
| Maximum flow4) | at nnom(Vg max) | qv max nom | L /min | 375 | 450 | 469 | 600 |
| Maximum power4) | at qv nomand Δp = 350 bar | Pnom | kW | 219 | 262 | 273 | 350 |
| Torque4) | at Vg maxand Δp = 350 bar (continuous operation) | Tmax | Nm | 1391 | 1391 | 1978 | 2785 |
| Rotary stiffness | Vg maxto 0.5 • Vg max | cmin | Nm/rad | 59500 | 59500 | 74800 | 115000 |
| 0.5 • Vg maxto 0(interpolated) | cmax | Nm/rad | 181000 | 181000 | 262000 | 391000 | |
| Moment of inertia rotary group | JTW | kgm2 | 0.061 | 0.061 | 0.102 | 0.178 | |
| Angular acceleration maximum | α | rad/s2 | 10000 | 10000 | 8300 | 5500 | |
| Case volume | V | L | 3 | 3 | 5 | 7 | |
| Weight approx. | m | kg | 102 | 102 | 173 | 234 | |
| 1)Standard setting for limitation of the swivel angle. If another setting is required,please state in clear text. Setting range Vg max:Vg maxto 0.8 • Vg max Vg min:0 to 0.2 • Vg max 2)Nominal speed in self priming operation with an absolute pressure (pS) of 1 bar at inlet port S and mineral oil with a density of 0,88 kg/L 3)The values apply for Vg≤ Vg maxor an increase in inlet pressure pSat the inlet port S (see diagram page 5) 4)Depending on the type of fluid,restrictions may be necessary,see chapter hydraulic fluids page 4 Important Exceeding the maximum or falling below the minimum permissible values can lead to a loss of function,a reduction in operational service life or total destruction of the axial piston unit. More details on limiting values for speed fluctuations,reduction in angular acceleration dependent on the frequency and the permissible starting angular acceleration (below the maximum angular acceleration) can be found in data sheet RE 90261. | |||||||
