Hytec has announced the addition of the Rexroth A4VTG Series 33 of variable displacement pump to its product range. The series features a closed circuit and swashplate design for easy installation.
The pumps have been specifically designed for use with drum drives on mobile concrete mixers. The A4VTG series features a high pressure level – rated pressure of 400 bar and maximum pressure of 450 bar – for a high power ratio, as well as stable electro-proportional control with mechanical manual override and robust hydraulic mechanical servo control.
The high pressure ports are unidirectional for an easy and cost-effective line arrangement, while the suction port is easy to assemble.
The variable displacement pumps have been developed to the highest quality standards with the design including direct operated pressure relief valves for special resistance against contamination and an internal gear pump with geared contact area.
The line ports of the Series 33 pumps are the same as the Series 32, allowing for the models to be easy interchanged. The range of pumps is available in sizes 71 and 90, with coupling flanges provided on request for trouble-free attachment of prop shafts. The pumps also feature a SAE C 4-hole mounting flange for safe operation, even in the case of shocks, and a port plate for high efficiencies and service life.
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