Date: 2013-08-01

Failsafe bearing floats on superconductors(pic)

Siemens has started to test the world's first non-contact bearing based on high-temperature superconductor (HTS) materials. The prototype bearing, developed by a team lead by German-based Nexans SuperConductors, can support a load of 500kg spinning at up to 3,600 rpm. Unlike other non-contact bearings, the HTS bearing is said to be inherently safe.


The bearing takes the form of a 325mm-diameter cylindrical copper stator (shown above) on which 270 HTS crystals are arranged, and a rotor fitted with permanent magnet rings. The copper cylinder is cooled to around -210

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