High-precision rotary stroke bearings are design elements. They can be calculated, are standardized to a certain degree and can be exchanged without loss of quality. This applies for both standard and customized versions. Here are a number of examples:
Metrology
Mahr is acknowledged as one of the market leaders in the field of industrial metrology. What perhaps is less well known, however, is the fact that Mahr developed the MarMotion high-precision rotary stroke bearing from standard die set guides in order to increase the measuring accuracy and certainty of its products. In the field of industrial metrology, high-precision rotary stroke bearings are used in probes and dial comparators, positioning units, centering and tilting tables and in other modules that have an influence on the measuring result. High-precision rotary stroke bearings must exhibit no backlash, stick slip or wear and the motion must be smooth and reproducible.
The high-precision rotary stroke bearing is most popular in mechanical engineering applications. It is used for die-cutting and molds in tool building applications and in machine tools where it is used, for example, for center sleeve bearings. It is an indispensable component for packaging machines in a wide range of industries, in automatic assembly units, textile machines and high-quality special-purpose machines. These bearings exhibit high rigidity, excellent load-bearing capacity and absence of stick slip.
Medical technology
Medical equipment is subject to particularly high standards. In dental technology, rotary stroke bearings are therefore used in freehand milling machines for machining soft materials (wax, plaster). The requirements on apparatus that come into contact with patients are even higher. In the case of ophthalmological instruments, the stick-slip-free rotary stroke bearing supports the doctor's touch and experience.
Precision engineering
The degree of miniaturization in these industries requires compact instruments. Rotary stroke bearings in the MINI series satisfy this need. Small ball diameters reduce the installation space required. The 'Minis' come paired without play and are essential for a wide range of applications including small control elements for placer heads and laser welding technology as well as blade holders, jigs or fixtures. Stick-slip freedom, easy movement and maintenance-free operation are all-important.
The MarMotion high-precision rotary stroke bearing is the bearing of choice in optical engineering to enabe stick-slip-free movement of lenses, mirrors and diaphragms. The bearing is suited for large and heavy optical elements as well as for miniature design in small objectives. Executions in stainless steel allow dry running.
The production of electronic components requires machines that are able to approach positions with pinpoint accuracy at high speeds. High-precision rotary stroke bearings are crucial components in printed circuit board production and lithographic processing of wafers. Backlash-free movements, a long service life and absolute cleanliness (clean-room production) are vital.
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