An inner ring contact member is mounted on a rotation shaft to be disposed at a lower side of an inner ring in a vertical direction such that a larger-diameter end of a conical outer peripheral surface abuts against an axial end surface of the inner ring. The conical outer peripheral surface is formed such that the larger-diameter end of the conical outer peripheral surface is disposed radially inwardly of a radially outward edge of the end surface of the inner ring. A cage is disposed between the inner ring and an outer ring in such a manner that a first annular portion of the cage close to the conical outer peripheral surface is disposed so as to overlap with the end surface of the inner ring in the radial direction.