The A30VG, a new axial piston variable pump from Rexroth, is universally compatible with the BODAS mobile electronics product range. It’s compatible with controllers from series 3x and higher, as well as current pressure sensors. The pump can be adjusted mechanically, the output flow of the pump is proportional to the swivel angle of the control lever, or electronically. Both controls can be superseded by an input speed dependent control cartridge. Proven, predefined software functions for control devices accelerate the implementation of new concepts for efficient hydrostatic travel drives; wheel drives with longitudinal and cross locks are an example. As a tested solution, Rexroth supplies the pumps with electrical components and specially adapted radial piston motors.
The pump is designed for wheel drives in combination with a mechanical differential lock or series motor connection, as well as roller drives. It supports convenient switching of the hydraulic motors while driving. In addition, the comprehensive concept covers the requirements of articulated machines with single-wheel drives. Construction machinery designers can also use them for synchronous working drives in a closed circuit with high efficiency requirements.
In swashplate design with integrated boost pump, the A30VG supplies two uniformly variable circuits in closed circuits, each with a flow of 28 ccm per revolution. The nominal pressure is 300 bar; the maximum pressure is 350 bar. The pump achieves high efficiency due to the absence of flow dividers. With through-drive flanges according to SAE-J744 (A/B/C) and a variety of through-drive couplings, it integrates flexibly into the design of construction machinery. A30VG has the lowest space requirement among comparable conventional pumps.
For more information, visit https://www.boschrexroth.com/en/A30VG.