Abstract
This paper discusses some mechanical results from experiments on Superconducting Magnetic Bearings (SMBs) consisting of HTS tapes wound in a ring and a permanent magnet as could be applied to larger rotating machines and ultra-low temperature submerged motors. The wound-ring superconductors are made of 12 mm-width HTS tapes. The authors estimated the spring constant, k, after measuring the thrust force, as 3.85 × 103 N/m, for three-layered wound HTS tapes, and 2.44 × 103 N/m, for the single-wound HTS tape, respectively. The rotating losses for speeds of 500–4500 rpm in the constructed SMB system were also estimated and they were less than 10 W in the constructed measurement system.
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