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

Ball rail systems

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 travel accuracy and work piece quality while greatly increasing load capacities and service life. These runner blocks are available in most sizes, versions, and accuracy classes. BSHP ball runner blocks are 100% interchangeable into existing profiled rail applications using the same part number as before.

The new BSHP runner blocks distinguish themselves from the previous generation by reducing pulsation when placed under a load. The machining quality and accuracy of cutting machine tools, measuring machines, glass machining equipment and other tooling benefit as a result of reduced pulsation.

Rexroth has also boosted dynamic load capacities by approximately 26 percent with static load capacities improving by as much as 50 percent. Dynamic load capacities form the basis for service life calculations. The higher dynamic values lead to a service life that is up to 200 percent longer. Higher load capacities also promote 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. Downsizing saves weight, installation space and money.

Advancements in travel accuracy and reduced fluctuation in friction force are realized by 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 are 100% interchangeable into existing profiled rail applications using the same part number as before.

For more information on the BSHP ball runner blocks:

About Bosch Rexroth:

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. To learn more, please visit

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.”

Additional information is available online at , ,

In the U.S., Canada and Mexico, the Bosch Group manufactures and markets automotive original equipment and aftermarket products, industrial drives and control technology, power tools, security and communication systems, packaging technology, thermotechnology, household appliances, healthcare telemedicine and software solutions. For more information, please visit , and



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