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Aiming at rotation speeds above 1 million rounds per minute, a two-stage motor device is hereby proposed, based on the concept of so-called false twisting aggregates, known from the yarn processing industry. The first stage, a synchronous machine, is designed around a passive magnetic bearing. The second stage, a small axis, spun by the first stage using a friction transmission is designed to find its physical limits around 7 million rounds per minute. This report presents the design of the experimental set-up. Based on finite element analysis, the performances of the future experimental set-up will be estimated.

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Booktitle: Proceedings of ISMB10