To prevent a roller from being poorly inserted and out of place by easily enabling the insertion of the roller into a retainer at an approximately optimal inserting angle with a stable posture.
A self-aligning roller bearing is provided with an annular portion 12 having a pocket 11 to store the roller 3 in the retainer 10, an outward flange 13 extending outward in the axial direction toward the head side of the roller 3 of the annular part 12 and retaining the head of the roller 3, a claw 14 projected outward in the outward flange 13 and engaged in the head of the roller 3, and a small-diameter flange 15 arranged in the tail side of roller 3 of the annular part 12. A roller inserting guide 20 in which a guide surface 21 approximately parallel to the contact angle direction of the roller 3 is arranged along an inside surface 11a of the small-diameter flange 15 side of a pocket 11 is installed in the outer peripheral side of the small-diameter flange 15 in the retainer 10.
Yoshiaki Naito
Cui Shu Tetsu
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