089-10 Lohr, 2010-10-26

Heavy-duty roller rail systems that can be more finely scaled

Roller Runner Block

The new roller runner block from Rexroth is about 80mm longer and, with its additional roller elements, supports significantly higher loads.

Extended Rexroth roller runner block holds 77 percent more

The advantages of the compact dimensions of the size 65 profiled rail systems are combined in the new roller runner block with a 77 percent increase in load-bearing capacity. Machine manufacturers can thus reduce assembly costs even in existing designs and replace multi-block designs with an extended block.

Extended by about 80mm, the block has additional roller elements to enable it to support significantly higher loads, and can achieve a dynamic load capacity of 366kN. The static load capacity exceeds 792kN. With dynamic torsional load moments and longitudinal load moments of over 13.000Nm, the blocks enable highly rigid designs to be achieved. In the standard height the roller runner block can be fitted from below or above and adds refinement to the spectrum of load capacities between sizes 65 and 100.

Rexroth offers the new roller runner blocks in accuracy classes H, P, SP and UP, and with preload of 8 and 13 percent. The unrestricted interchangeability of the roller blocks means that they can be fitted to all Rexroth's service-proven size 65 profiled rail systems, in all accuracy and preload classes. Moreover, manufacturers of presses, plastic processing machines, heavy machinery, paper processing machines and printing machines and special applications can make the most of the extended load spectrum to drive forward with standardization.

The roller runner blocks are fully sealed and are suitable for lubrication with oil and grease. Lubrication points on all sides, which are also suitable for central lubrication systems, make design work easier even where installation conditions are difficult. The roller bearing system reduces the amount of friction as compared to sliding guides by up to 90 percent. This reduces the drive force required and contributes to improved energy efficiency, greater precision and higher rigidity. On request Rexroth can supply the extended roller block with aluminum end caps as well, for wall-mounting and in the corrosion-resistant Resist CR version, with a matt silver, hard-chrome plated finish.

Bosch Rexroth AG is one of the leading drive and control technology specialists worldwide. Under the brand name of Rexroth the company supplies more than 500,000 customers with tailored solutions for driving, controlling and moving. Bosch Rexroth is a partner for industrial applications and factory automation, mobile applications and using renewable energies. As The Drive & Control Company, Bosch Rexroth develops, produces and sells components and systems in more than 80 countries. In 2009, the company of the Bosch Group with its 34.200 employees generated sales amounting to about EUR 4,1 bn.

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Susanne Herzlieb
Maria-Theresien-Straße 23
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Phone: +49 9352 18-1573