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Open AccessArticle

Contactless Mechanical Components: Gears, Torque Limiters and Bearings

1
Departamento de Teoría de la Señal y Comunicaciones, Universidad de Alcalá, 28871, Alcalá de Henares, Spain
2
Departamento de Ingeniería Mecánica, Universidad Carlos III de Madrid, 28911, Leganés, Spain
3
MAG SOAR SL, 28341, Valdemoro, Spain
4
Instituto Pedro Juan de Lastanosa, Universidad Carlos III de Madrid, 28911, Leganés, Spain
*
Author to whom correspondence should be addressed.
All the authors contributed equally to this work.
Machines 2014, 2(4), 312-324; https://doi.org/10.3390/machines2040312
Received: 2 October 2014 / Revised: 20 November 2014 / Accepted: 8 December 2014 / Published: 18 December 2014
(This article belongs to the Special Issue Feature Papers)
Contactless mechanical components are mechanical sets for conversion of torque/speed, whose gears and moving parts do not touch each other, but rather they provide movement with magnets and magnetic materials that exert force from a certain distance. Magneto-mechanical transmission devices have several advantages over conventional mechanisms: no friction between rotatory elements (no power losses or heat generation by friction so increase of efficiency), no lubrication is needed (oil-free mechanisms and no lubrication auxiliary systems), reduced maintenance (no lubricant so no need of oil replacements), wider operational temperature ranges (no lubricant evaporation or freezing), overload protection (if overload occurs magnet simply slides but no teeth brake), through-wall connection (decoupling of thermal and electrical paths and environmental isolation), larger operative speeds (more efficient operative conditions), ultralow noise and vibrations (no contact no noise generation). All these advantages permit us to foresee in the long term several common industrial applications in which including contactless technology would mean a significant breakthrough for their performance. In this work, we present three configurations of contactless mechanical passive components: magnetic gears, magnetic torque limiters and superconducting magnetic bearings. We summarize the main characteristic and range of applications for each type; we show experimental results of the most recent developments showing their performance. View Full-Text
Keywords: contactless mechanical component magnetic gear; magnetic torque limiter; superconducting magnetic bearing contactless mechanical component magnetic gear; magnetic torque limiter; superconducting magnetic bearing
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Perez-Diaz, J.L.; Diez-Jimenez, E.; Valiente-Blanco, I.; Cristache, C.; Alvarez-Valenzuela, M.-A.; Sanchez-Garcia-Casarrubios, J. Contactless Mechanical Components: Gears, Torque Limiters and Bearings. Machines 2014, 2, 312-324.

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