Cages for rolling bearings and rolling bearings

Abstract

The present invention provides a rolling bearing retainer that can effectively supply lubricating oil between the rolling elements and the inner and outer rings with a simple structure, thereby preventing melting and improving durability, and a rolling bearing having the retainer. The rolling bearing retainer (1) of the present invention is assembled into a rolling bearing to retain rolling elements (15), the rolling bearing having: an outer ring (11) having an outer ring side track groove (11a), an inner ring (12) having an inner ring side track groove (12a), and a plurality of rolling elements (15) that are freely held between the outer ring side track groove (11a) and the inner ring side track groove (12a). The rolling bearing retainer (1) includes: at least one annular portion (2) having a thickness in the radial direction; and a plurality of column portions (3) that are axially erected from the annular portion (2). Moreover, the outer diameter surface (1a) of the retainer (1) has different outer diameters along the axial direction, and the position of the largest diameter in the outer diameter surface (1a) is located in the region opposite to the outer ring side track groove (11a).

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