ROLLING BEARING

PROBLEM TO BE SOLVED: To provide a rolling bearing that can effectively prevent a rolling element from dropping out from an inner and outer rings even if wear of a separator is advanced.SOLUTION: In the rolling bearing in which a plurality of rolling elements 3 are arranged between the inner and the outer rings 1 and 2, and a plurality of separators 4 is circumferentially provided between the rolling elements 3, at least on one face of both side faces in an axial direction of the inner and the outer rings 1 and 2, a circular side plate 6 by which the separators 4 are prevented from slipping out in the axial direction is provided. On this side plate 6, a pillar member 7 by which a plurality of separators provided in a circumferential direction is circumferentially divided into multiple classes is vertically provided, and thus even if wear of the separator is advanced, since the all rolling elements are not biased to one side in the circumferential direction, the rolling elements do not drop out from the bearing.