PI 050-16 Lohr am Main, 2016-08-31

Compact and low-maintenance

Now available as an option for the HYDROTRAC GFT transmission units: The low-maintenance, dynamic multiple-disc brake reduces the installation space required and reduces the weight by up to 75 percent

Integrated dynamic multiple-disc brake saves installation space and money

With readily available standard assemblies, machine manufacturers are able to enhance their customized drive solutions quickly and simply. The low-maintenance, dynamic multiple-disc brake from Bosch Rexroth reduces the installation space required and reduces the weight by up to 75 percent in comparison to conventional mechanical brakes.

With more than eight years of experience in the field, the dynamic brake in the HYDROTRAC GFT transmission unit now offers an advanced alternative to the conventional disc or shoe brake and is also up to 75 percent lighter than conventional brake solutions. Manufacturers can optionally receive dynamic multi-disc brakes for the HYDROTRAC GFT in sizes 8120, 8130 and 8150. In connection with the High Level Braking HLB system from Rexroth, self-propelled working machines can fulfill the high safety requirements for speeds up to 50 km/h, as is stipulated, for example, in German (StVZO) or American (ASAE) traffic regulations. Series production machines that are equipped with a Rexroth transmission unit including a multi-disc brake have already been approved in both countries under the respective regulations.

And the key aspect here: The discs of the dynamic brakes are on the inside of the transmission unit and are protected from grime and other environmental influences. This helps to make the complete drive unit very compact and it also means very low-maintenance operation. With proper designed machine layout, the brakes are completely wear free. Since fewer components are required in total, the system also offers a cheaper alternative to existing solutions.

The modularly designed HYDROTRAC GFT 8000 transmission units come in nine sizes, covering output torques from 10 to 130 kNm with finely graduated gear ratios in both open and closed circuits. Through the combination of two and three-stage planetary gearboxes with the latest series of Rexroth constant and variable motors, they achieve around 10 percent more torque in comparison to the previous series. As a result, machine manufacturers can improve driving performance without changing the machine dimensions or can use a smaller size whilst maintaining the same power. Thanks to the platform concept, the transmission units, which are available from stock, can be installed in various vehicle designs. As a ready-to-install, hydraulic motor gearbox unit, including dynamic brake, they reduce logistics and assembly work for heavy duty vehicles, farm equipment on wheels, track driven machines and rollers.

Economical, precise, safe, and energy efficient: drive and control technology from Bosch Rexroth moves 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 to develop innovative components as well as tailored system solutions and services. Bosch Rexroth offers its customers hydraulics, electric drives and controls, gear technology, and linear motion and assembly technology all from one source. With locations in over 80 countries, more than 31.100 associates generated sales revenue of approximately 5.4 billion euros in 2015.

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The Bosch Group is a leading global supplier of technology and services. It employs roughly 375,000 associates worldwide (as of December 31, 2015). The company generated sales of 70.6 billion euros in 2015. Its operations are divided into four business sectors: Mobility Solutions, Industrial Technology, Consumer Goods, and Energy and Building Technology. The Bosch Group comprises Robert Bosch GmbH and its roughly 440 subsidiaries and regional companies in some 60 countries. Including sales and service partners, Bosch’s global manufacturing and sales network covers some 150 countries. The basis for the company’s future growth is its innovative strength. Bosch employs 55,800 associates in research and development at 118 locations across the globe. 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.”

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Susanne Herzlieb
Maria-Theresien-Straße 23
97816 Lohr am Main
Phone: +49 9352 18-1573

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