| 摘要 |
PROBLEM TO BE SOLVED: To provide a roller bearing capable of effectively preventing formation of shaft trace caused by interference of an inner ring and a shaft. SOLUTION: A flange portion of an inner ring member 11 used in this roller bearing has a thin portion 13 having a relatively thin radial thickness, at its end face side and a thick portion 14 having a relatively thick radial thickness, at its central side, and has a contact portion 15 fitted to an axle on its central portion, a non-contact portion 16 radially separated from the axle on its outer edge portion, and a ridge portion 17 positioned on the boundary of the contact portion 15 and the non-contact portion 16 on its internal circle face. An axial width L<SB>1</SB>from an end face 12 of the inner ring member 11 of the thin portion 13 and an axial distance L<SB>2</SB>from the end face 12 of the inner ring member 11 to the ridge portion 17 satisfies the relationship of L<SB>1</SB>>L<SB>2</SB>. COPYRIGHT: (C)2007,JPO&INPIT
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