| 摘要 |
PROBLEM TO BE SOLVED: To provide a small size bearing having a flange that is excellent in durabihty of its outer ring and has a desired size accuracy in press machining of an outer ring track surface. SOLUTION: Plural balls 5 are arranged in an annular space part 4 between an inner ring 3 and an steel plate made outer ring 2, the inner ring 3 has an annular ball groove 31 along the outer peripheral surface, and the outer ring 2 consists of a first annular member 21 and a second annular member 22 and combines the both members. The first annular member 21 has first ball guiding surface 21a with a circular arc shaped cross section, and the second annular member 22 has a second ball guiding surface 22a with a circular arc shaped cross section. Therefore, each ball 5 is supported by the first and second ball guiding surfaces 21a, 22a and the annular ball groove surface 31.
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