| 摘要 |
PROBLEM TO BE SOLVED: To avoid malfunction of a sensor caused by an influence of a leakage magnetic field in a bearing with a rotation sensor used by being integrated into a motor or the like. SOLUTION: A rare earth-based material or an Alnico-based material is used as a magnetic material for a magnetic encoder 13 which is a constituent member of this bearing with the rotation sensor, to thereby generating a stronger magnetic force than a conventional ferrite-based material, and to be hardly influenced by the leakage magnetic field in the sensor operation. COPYRIGHT: (C)2005,JPO&NCIPI
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