RS20 modular flow sharing platform. Source: Bosch Rexroth

Bosch Rexroth has unveiled a new control block for the working hydraulics in mobile machines. The RS20 modular, load-independent, flow-sharing valve manifold platform was introduced at Bauma 2019, Germany’s largest construction machinery trade fair.

The RS20 distributes hydraulic flow independent of load pressure. A successor to the M7 20 and M6 22 mono block manifolds, the RS20 has a lower pressure loss than either of those products and a maximum flow of 300 L/min per section.

RS20’s modular, sandwich plate design enables a variety of sections to be combined in a single platform, including small and large valves. Diverse functions that previously had to be mounted independently of the main valve block can now be integrated with the RS20, including stabilization modules, bypass priority modules and anti-drift valves.

The modular design also permits the integration of new functions to meet future market requirements, such as electrohydraulic modules for expanded digital control.

The platform is designed for mobile machinery applications including 13 to 17 ton mobile and tracked excavators, 20 to 50 ton wheeled loaders and bulldozers, as well as mobile cranes, forklifts, drilling machines and other material handling equipment.

RS20’s design offers a number of advantages including:

• Improved pressure resistance compared to RS20’s mono block due to sandwich plate configuration.
• No constriction of pump and return channels as they pass through the full manifold.
• Effective leak prevention thanks to sealing surfaces between sections.
• Compatibility with existing RS15 platform sections.

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