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Charlotte Stonestreet
Managing Editor |
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Angular measuring system
16 October 2014
Schaeffler has developed an angular measuring system suitable for direct-driven, highly dynamic, high precision rotary axes in machine tools. The system incorporates an inductive (absolute) angular measuring system integrated in a rotary table bearing.

The principle of integrating the SRM measuring system into a rotary table bearing was successfully implemented in Schaeffler’s YRTM range of bearings, but has now been developed further.
The SRM measuring system combines high measuring speed and measurement accuracy with a reduced design envelope and increased robustness. The system is insensitive to contamination (e.g. lubricants and coolants), offers a rotary axis with an open centre (freeing up space in the centre of the machine) and reduces alignment errors. With fewer mechanical components, the system is also easy to replace and maintain.
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