PI 022-19 2019-04-08

New generation of flow sharing (LUDV) valves: modular RS20 platform from Rexroth

RS20 platform

The new RS20 platform is made up of freely combinable functional sections. Compatibility with RS15 sections helps to avoid over-engineering.

Individual solutions with sandwich plate design allow future-proof integration of various functions

No compromises when it comes to operating life and robustness – this was the basic principle when coming up with the new design. With a maximum flow of 300 l/min per section, the RS20 platform from Rexroth achieves an even lower pressure loss compared to its mono block M7 20 and M6 22 predecessors. At the same time, the sandwich plate design allows any combination of small and large valve sections. As a result, the specific flow can be provided for each actuator in mobile machines. Manufacturers can match the sections to ensure that their requirements are optimally met.


For over 20 years, manifolds from Bosch Rexroth have performed reliably in mobile applications. As an alternative and successor to the established M7 20 and M6 22 ranges, the company will present the new RS20 platform concept at the bauma 2019. The consolidated platform marks the transition from the mono block to the flexible sandwich plate design. For the first time, it allows machine manufacturers to combine different sections to main control valves for 13-17 t mobile and tracked excavators as well as 20-50 t wheeled loaders and bulldozers. Further areas of application include material handling, mobile cranes, forklifts and drilling machines. The number and arrangement of the functional slices, even those of different sizes and with different control technology, make it possible to control various applications flexibly at all times.


The new concept caters for changing market requirements and offers new opportunities for the manufacturers of mobile machines. Functions which previously had to be installed separately can now be integrated into the main control valve. These include a stabilization module, bypass priority module or an anti-drift valve. The pump and return channels pass through the entire manifold without diversions or constrictions. The sealing surfaces between the individual sections are designed to prevent leakage from the inside to the outside. Thanks to the sandwich plate design, the new concept offers even better pressure resistance compared to its mono block predecessors.


The new concept not only gives machine manufacturers greater freedom when configuring main control valves. The future-proof design also allows them to integrate functions which go along with future market requirements. Electronified components such as Rexroth’s new A10VOH variable displacement pump can be integrated at any configuration level. The RS20 platform is ideal when it comes to gradually integrating functions which are to be controlled electro-hydraulically now or in the future. Combinations with the existing RS15 platform are also possible.


Anyone who is interested can find out more about the RS20 platform at the bauma (Hall A3, Stand 327). The prototype of the planned online configuration tool along with the RS22, the next-bigger size of the LUDV valve platform, will also be on show here. Although this is still in the design phase, Bosch Rexroth would like to offer customers an insight into what comes next.


As one of the world’s leading suppliers of drive and control technologies, Bosch Rexroth ensures efficient, powerful and safe movement in machines and systems of any size. The company bundles global application experience in the market segments of Mobile Applications, Machinery Applications and Engineering, and Factory Automation. With its intelligent components, customized system solutions and services, Bosch Rexroth is creating the necessary environment for fully connected applications. Bosch Rexroth offers its customers hydraulics, electric drive and control technology, gear technology and linear motion and assembly technology, including software and interfaces to the Internet of Things. With locations in over 80 countries, more than 30,500 associates generated sales revenue of 5.5 billion euros in 2017.

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The Bosch Group is a leading global supplier of technology and services. It employs roughly 410,000 associates worldwide (as of December 31, 2018). According to preliminary figures, the company generated sales from operations of 77.9 billion euros in 2018. Its operations are divided into four business sectors: Mobility Solutions, Industrial Technology, Consumer Goods, and Energy and Building Technology. As a leading IoT company, Bosch offers innovative solutions for smart homes, smart cities, connected mobility, and connected manufacturing. It uses its expertise in sensor technology, software, and services, as well as its own IoT cloud, to offer its customers connected, cross-domain solutions from a single source. The Bosch Group’s strategic objective is to deliver innovations for a connected life. Bosch improves quality of life worldwide with products and services that are innovative and spark enthusiasm. In short, Bosch creates technology that is “Invented for life.” The Bosch Group comprises Robert Bosch GmbH and its roughly 440 subsidiary and regional companies in 60 countries. Including sales and service partners, Bosch’s global manufacturing, engineering, and sales network covers nearly every country in the world. The basis for the company’s future growth is its innovative strength. At 125 locations across the globe, Bosch employs some 69,500 associates in research and development.

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Olaf Marshall
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