ROLLING BEARING WITH SENSOR

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PROBLEM TO BE SOLVED : To provide a rolling bearing with a sensor, normally operable under circumstances where magnetic noises are generated. SOLUTION : The rolling bearing 10 with the sensor comprises a inner ring 11, an outer ring 12, a rolling body 13 laid between the inner ring 11 and the outer ring 12, a magnet 34 mounted on one of the inner ring 11 and the outer ring 12, and a magnetism responsive sensor 33 opposed to a multipole magnet 34. One of the magnet 34 and the magnetism responsive sensor 33 is fixed to the inner ring 11 or the outer ring 12 via a sensor holder 31 or a magnet holder 32 formed of a magnetic material, and the magnet 34 is of a rare earth material.