| 摘要 |
Provided are a rolling bearing cage capable of preventing the progression of problems in the areas of contact between the rolling elements and the cage even during high speed rolling, and a rolling bearing. The pockets (9) of a crown-shaped cage (11) have a cylindrical surface (9a), which is formed by a cylindrical shape having a center line (G) that extends in the diameter direction, and a tapered surface (9b), which is continuous with the cylindrical surface (9a) on the internal diameter side or external diameter side of the cylindrical surface (9a) and which extends towards the center line (G) as distance from the cylindrical surface (9a) increases in the diameter direction. Displacement of the crown-shaped cage (11) in the diameter direction is determined by the balls (7) contacting the tapered surface (9b). When the balls (7) are in contact with the tapered surface (9b), the angle alpha formed by an imaginary line (A), which passes through the contact point (P) of a ball (7) with the tapered surface (9b) and the center (O) of the ball (7), and an imaginary perpendicular plane (B), which passes through the center of the ball (7) and is perpendicular to the diameter direction, is set to be larger than a friction angle lambda that is established from a friction coefficient µ of the contact point (P) between the ball (7) and the tapered surface (9b). |
