Superconduction bearing

A superconduction bearing comprising:

• a rotor including an axle-like rotary member and a disk disposed around said axle-like rotary member;
• a supporting means, cooled by cooling medium, for supporting a plurality of superconductors, said supporting means including at least a horizontally extending flat plate having a central hole formed therein and an upstanding circumferential wall provided on said flat plate;
• said disk including a ring-shaped series of recesses formed therein;
• superconductors arranged, at even intervals, in a concentric circle surrounding said axle-like rotary member;
• said axle-like rotary member being oriented in a vertical direction so that a lower end of said axle-like rotary member is passed through said central hole;
• said disk being placed above said flat plate and radially inside of said circumferential wall;
• and
• a plurality of permanent magnets disposed at a distance from said superconductors, each of said magnets disposed in one of said series of recesses;
• each of said permanent magnets having a top surface and a bottom surface, said top surface and said bottom surface of each of said permanent magnets being oppositely magnetized relative to each other, each of said permanent magnets having a width which is 5 to 10 times as large as said distance between said superconductors and permanent magnets.