Patent ID: 8113719
Filing Date: 2012-02-14
Classification: F16C,Y10T

Abstract:
1. A roller cage comprising: a radially inward-side annular plate; a radially outward-side annular wall; a plurality of pillar portions formed between the radially inward-side annular plate and the radially outward-side annular wall, with a predetermined interval provided between the plurality of pillar portions; pockets formed in the pillar portions, wherein: the plurality of pillar portions are formed at a plurality of locations in a circumferential direction of the radially inward-side annular plate and the radially outward-side annular wall; rollers are rotatably retained in the pockets; an inner peripheral surface of the radially outward-side annular wall, including a surface extending through said pockets, is formed so as to be oblique toward a radially outward direction; and a radially outward-side end surface of each of the rollers has a spherical surface shape.