| 摘要 |
A retainer-equipped roller includes a retainer (12) having a pair of ring parts (14) separated in an axis O direction and column parts (15) arranged circumferentially at regular intervals so as to form pockets (22) and connect the pair of ring parts (14), and a plurality of rollers (11) arranged in the pockets. The roller (11) has a chamfered part (13) provided between a roller end face and a roller rolling surface (11t). The column part (15) is positioned on a radial outer side of a pitch circle PCD of the roller (11), and a distance between the circumferentially adjacent column parts (15 and 15) is smaller than a diameter of the roller (11). The pair of ring parts (14) has a pair of projection members (16) projecting such that their tip ends are opposed so as to come close to each other, in circumferentially the same position as the column part (15), and in a position on a radially inner side of the pitch circle PCD of the roller (11). The tip ends of the pair of projection members (16) abut on the chamfered parts (13) provided at both ends of the roller (11) and hold the roller between the pair of ring parts (14). |
