Patent ID: 6742934
Filing Date: 2004-06-01
Classification: F16C

Abstract:
A rolling bearing, comprising:an inner ring having an outer surface; an outer ring having an inner surface; a plurality of rolling elements rotatably disposed between the inner ring and the outer ring; and, a retainer for retaining the rolling elements, the retainer being made of a resin material, the retainer being positioned with respect to the inner surface of the outer ring or the outer surface of the inner ring, the retainer including a pair of annular portions axially arranged in parallel and a columnar portion coupling the annular portions, wherein the following expression is obtained: AL=LH3/dm2&gE;0.025 mm2 in which H is a radial length of a section of the annular portion, L is an axial length of the same, and dm is PCD of the rolling element, and further wherein the retainer is formed by an injection-molding and has a recess axially extending on an outer periphery thereof, and the recess has a parting line formed at the time of injection-molding.