OBLIQUE CONTACT BALL BEARING AND TURBOCHARGER

摘要

An oblique contact ball bearing (2) where the curvature radius of a raceway (21) of an outer ring (10) reduces toward the bottom (21A) of the raceway (21), the curvature radius being defined in a cross-section of the outer ring (10) cut in a plane including the center axis of the outer ring (10). According to this structure, the distance Deltax1 between the bottom (21A) of the raceway (21) of the outer ring (10) and balls (12) can be made greater without increasing the angle theta of contact of the balls (12) than the case where the curvature radius of the raceway (21) is constant. Even if a temperature difference occurs between an inner ring and the outer ring, clearance clogging can be avoided and the balls are smoothly rotated to prevent early separation.