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PI 043-14 Lohr am Main, 2014-06-02

Ball rail systems: twice the service life and high travel accuracy

By integrating its patented run-in zone and more load-bearing balls in the load zone, Rexroth has doubled the nominal service life of its ball rail systems while increasing travel accuracy.

New BSHP ball runner block from Rexroth

The patented entry zone of the new BSHP ball runner blocks from Rexroth improves the travel accuracy of ball rail systems and the machining quality of work pieces as a result. At the same time, greatly improved load capacities increase service life expectancies by a considerable amount. The new runner blocks are available in all sizes, versions, and accuracy classes. They also fit on already installed profiled rails of the same sizes without any restrictions.

The axis travels toward the blank with a high level of dynamic capability. The tool machines the work piece with high force, whereby the new BSHP runner blocks distinguish themselves from the previous generations in this context as the ball runner block encounters only minimal pulsation, even when placed under a load, with no change in the high precision of the travel movement executed. The machining quality and accuracy of cutting machine tools, measuring machines, glass machining equipment, and other tooling increase as a result.

Rexroth has also bettered the dynamic load capacities by approximately 26 percent across all sizes and variants, with static load capacities improving by as much as 50 percent. Dynamic load capacities form the basis for service life calculations. The higher output values lead to a service life that is up to 200 percent longer. The higher load capacities also promote the trend toward energy-efficient lightweight construction for new machine concepts as the new runner blocks can allow machine manufacturers to use a smaller size than before without sacrificing performance. This, in turn, saves weight and installation space.

The advancements in travel accuracy and the reduced fluctuation in friction force were realized by implementing Rexroth's patented entry zone in the ball runner block. The steel inserts elastically adapt to the operating load so that the balls can enter the entry zone smoothly, without any pulse-like stresses. The entry zone individually adapts to the current operating load of the ball runner block.

The new BSHP ball rail runner blocks also align with Rexroth's interchangeable design, whereby users can combine the runner block and profiled rails of identical sizes as required. This reduces logistics, assembly, and servicing outlay throughout the entire lifecycle. The new BSHP runner blocks in sizes 15 to 65 also fit on already installed profiled rails without any restrictions.

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, Factory Automation, and Renewable Energies 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, roughly 36,700 associates generated sales revenue of approximately 5.7 billion euros in 2013.

To learn more, please visit www.boschrexroth.com

The Bosch Group is a leading global supplier of technology and services. In 2013, its roughly 281,000 associates generated sales of 46.1 billion euros. (NB: Due to a change in accounting policies, the 2013 figures can only be compared to a limited extent with the 2012 figures). Its operations are divided into four business sectors: Automotive Technology, Industrial Technology, Consumer Goods, and Energy and Building Technology. The Bosch Group comprises Robert Bosch GmbH and its roughly 360 subsidiaries and regional companies in some 50 countries. If its sales and service partners are included, then Bosch is represented in roughly 150 countries. This worldwide development, manufacturing, and sales network is the foundation for further growth. In 2013, the Bosch Group invested some 4.5 billion euros in research and development and applied for some 5,000 patents. This is an average of 20 patents per day. The Bosch Group’s products and services are designed to fascinate, and to improve the quality of life by providing solutions which are both innovative and beneficial. In this way, the company offers technology worldwide that is “Invented for life.”

Additional information is available online at www.bosch.com , www.bosch-press.com and http://twitter.com/BoschPresse

 

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Contact

Susanne Herzlieb
Maria-Theresien-Straße 23
97816 Lohr am Main
Phone: +49 9352 18-1573
susanne.herzlieb@boschrexroth.de




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