Medium-to-high-pressure all-rounder: Rexroth’s new axial piston variable pump
10 April 2019
A10VOH is designed for a wide range of applications with a nominal pressure of 320 or 350 bar and features impressive self-priming ability
The Rexroth A10VOH axial piston variable pump can be used for applications which could previously only be handled by high-pressure units, including steering drives, hydrostatic fan drives and working hydraulics. It is also ideal for other demanding tasks which require a high nominal pressure and a compact design. The A10VOH features high-speed self-priming. With a permissible rated speed of 2,300 rpm, it can achieve maximum displacement of 145 cm³ – without any impellers.
Construction machinery and its components must first and foremost be reliable and robust, even when under extreme application conditions. Hydraulic units are also expected to be space-saving and energy-efficient. Over-sized and hence expensive high-pressure units are often used for applications with a pressure level somewhere between the classic thresholds of medium pressure (280 bar) and high pressure (350/380 bar). With its A10VOH (series 60, size 145), Rexroth has created a solution which perfectly bridges the gap in order to enable users to achieve efficient operation in this “light heavy-duty” application area.
The new axial piston variable pump features a permissible nominal pressure of 320 bar in corner power operation at maximum swivel angle and rotational speed. If the swivel angle is reduced, the permissible nominal pressure increases to up to 350 bar. As such, the A10VOH is ideal for use in various applications, including steering drives, hydrostatic fan drives and working hydraulics. It is lightweight and, despite its size of 145 cm³, so compact that it requires the same installation space as the Rexroth A10VO (series 31, size 100).
High self-priming ability and rated speed
Thanks to its innovative design, unlike other axial piston units the A10VOH does not require any impellers. With a permissible rated speed of 2,300 rpm, with maximum displacement of 145 cm³, it provides power density in the smallest of spaces. On account of its high-speed self-priming and lightweight design, Rexroth’s new axial piston variable pump is perfect for use in the demanding medium-pressure range.
Source: Bosch Rexroth AG