Patent ID: 8337092

Claim:
A retainer-equipped roller comprising a retainer having a pair of ring parts separated in an axial direction and column parts arranged circumferentially at regular intervals so as to form pockets and connect said pair of ring parts, and a plurality of rollers arranged in said pockets, wherein said roller has a chamfered part between a roller end face and a roller rolling surface, said column part is positioned on a radial outer side of a pitch circle of said roller, and a distance between the circumferentially adjacent column parts is smaller than a diameter of said roller, said pair of ring parts has a pair of projection members projecting such that their tip ends are opposed so as to come close to each other, in circumferentially the same position as said column part, and in a position on a radially inner side of the pitch circle of said roller, and said tip ends of the pair of projection members abut on said chamfered parts provided at both ends of the roller and hold the roller between the pair of ring parts, and in a state where said roller temporarily makes its closest approach to one of said ring parts and a gap width between said roller and the other of said ring parts becomes temporarily a maximum width, the tip end of said one projection member temporarily reaches the roller rolling surface behind said chamfered part and the tip end of said other projection member is in contact with the other chamfered part, with said pair of projection members stil holding said roller between said pair of ring parts.