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Magnetic Non-Contact Harmonic Drive

[+] Author Affiliations
J. L. Perez-Diaz, E. Diez-Jimenez, C. Cristache, I. Valiente-Blanco, M. A. Alvarez-Valenzuela, V. Castro, E. M. Ruiz-Navas, J. Sanchez-Garcia-Casarrubios

Universidad Carlos III, Madrid, Spain

C. Ferdeghini

CNR-SPIN, Genova, Italy

F. Canepa

CNR-IMEM, Genova, ItalyUniversitá degli studi di Genova, Genova, Italy

W. Hornig

BPE e.K., Eckental, Germany

G. Carbone

Universitá degli studi di Cassino e del Lizao, Cassino, Italy

J. Plechacek

Can Superconductors SRO, Prague, Czech Republic

A. Amorin

Universidad de Lisboa, Lisboa, Portugal

J. Serrano, V. Sanz

LIDAX, Madrid, Spain

Paper No. IMECE2013-63718, pp. V001T01A023; 4 pages
  • ASME 2013 International Mechanical Engineering Congress and Exposition
  • Volume 1: Advances in Aerodynamics
  • San Diego, California, USA, November 15–21, 2013
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-5617-8
  • Copyright © 2013 by ASME


The MAGDRIVE project, granted by the Space program of the EU-FP7, is developing a gear able to produce reduction ratios from 1 to several hundreds by means of magnetic teeth. The teeth, unlike the conventional gears, do not touch one to other. This makes that this gear does not need any kind of lubrication.

In case that the maximum torque is passed over the axle simply clutches, but nothing breaks down. Therefore, it has an intrinsic antijamming characteristic. It is also reversible: it can reduce but also multiply the velocity. It can also go clockwise or anticlockwise. Ratio, maximum torque, stiffness and damping can be customized. Even more it can also be customized to be direct or inverted (inverting the sense of the rotation). A low noise level is also a remarkable feature of this kind of device.

These characteristics make this technology very attractive for a number of different fields like aerospace, automation, automotive and others.

Two different prototypes have been developed: the first one is a “room-temperature prototype” for working temperature from −40°C to 100°C, while the second one is a “cryogenic prototype” that can work at temperature as low as 70 K.

The results of the tests for the first prototype are shown in this work.

Copyright © 2013 by ASME



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