A7VO Hydraulic Axial piston variable pump

Eternal Hydraulic A7VO Series 63 Hydraulic Axial piston variable pump

A7VO series 63 Hydraulic Axial piston variable pump is a robust high pressure pump for universal use,with Size 28- 500 cc, Nominal pressure 350 bar, Maximum pressure 400 bar, used for open circuit. Our products have lower noise and longer life, can replace Rexroth type.

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APPLICATION

Piston pumps are widely used in high-pressure, high-flow, high-power systems and where the flow needs to be regulated, such as mobile and construction equipment, engineering vehicles, heavy-duty planers, metal forming and stamping, machine tools, hydraulic presses, oilfield equipment, mining and metallurgical machinery, marine and other hydraulic systems.

The axial piston variable pump A7VO series 63 with high efficiency and high working pressures contributes significantly to this requirement. For use in construction machinery with very limited installation space (e.g. compact excavators, concrete mixers), the Rexroth A7VO series 63 is additionally available in two sizes with side ports.

Features of A7VO Hydraulic Axial piston variable pump

• Robust pump with long service life
• Hyperbolic power controller
• Large variety of controls
• Well-tried rotary group technology
• High total efficiency
• Optional high-speed version for nominal size 250
• Optional with long-life bearings for the nominal sizes 250 to 500
• Bent-axis design

High efficiency
A7VO series 63 features optimized rotary groups which improve the overall efficiency by 3 to 5 percent compared to common hydraulic pumps. This increases the total efficiency of mobile working machines, whereby the fuel consumption and the operating costs are reduced for the operator.

High pressure level and low power dissipation
The hydraulic efficiency is fundamentally determined by the working pressure. The higher the pressure, the lower the flow needed to transmit the same power. Thus, the flow losses in the hydraulic system are reduced. The axial piston variable pump A7VO series 63 offers a pressure level of 350 / 400 bar. This means a higher pressure level of up to 70 bar in relation to comparable products which are typically used in concrete mixers and compact excavators.

Compact design
In construction machinery (e.g. mini and compact excavators) the installation space available for hydraulic components is increasingly limited. For this reason, the axial piston variable pump A7VO series 63 is available in the sizes 55 and 80 with ports located at the rear and optionally at the side of the housing. Thanks to the working ports situated on the side, manufacuteres of construction machinery gain valuable installation space. Design modifications or other technical adaptions at the working machine are not necessary a clear benefit.

Robust and proven bent-axis design
We have many years of experience in developing and producing high quality and reliable axial piston units in bentaxis design as well as in implementing and commissioning of the products in various applications. This comprehensive expertise has been incorporated in the development of the axial piston variable pump A7VO series 63.

Related Product

A7V Variable displacement pump, axial piston bent axis design, for hydrostatic transmissions in open circuits.The flow is proportional to the drive speed and the displacement and is steplessly variable at constant drive speed.
Comprehensive program of control devices for every control and regulating unction. Simplified high performance rotary group with enhanced technical data and well-proven spherical control area.
Robust roller bearings for high loads. Hydrostatic unloading of bearings possible for continuous pressures up to 400 bar. Operation on both mineral and fire-resistant fluids. Improved port plate design and compact construction reduces noise level by 5 dBA.