INNER RING SEPARATE-TYPE ANGULAR BALL BEARING

Japanese Patent JP2022096223

A

To provide an inner ring separate-type angular ball bearing which hardly causes a scratch on a surface of a ball and inner/outer ring raceway grooves by smoothly inserting an inner ring into an outer ring.SOLUTION: A point between a ball 3 and an outer ring shoulder part 6 when the ball 3 of an outer ring assembly falls to the inside of a radial direction by its own weight is set as a contact point X, and a point at which a center line passing a center O of the ball 3 intersects with a surface of the ball 3 is set as a cross point Y. A rotation angle β around the center O of the ball 3 in a direction into which the ball 3 falls rather than the cross point Y is set as a positive angle, and a rotation angle in a reverse direction is set as a negative angle. An abutment point Z at which the ball 3 and an inner ring counterbore part 9 firstly abut on each other when inserting an inner ring 2 downward is located at a positive side rather than the cross point Y. A relationship of 1.00