Patent ID: 7878715

Claim:
A thrust roller bearing comprising: an annular plate; a cage formed in the annular plate, the cage including: a pair of substantially S-shaped bent portions formed at a radially intermediate area of the cage, the pair of bent portions being arranged in a circumferential direction of the cage; a pair of inner wall surfaces arranged in a radial direction of the cage; and a pocket for housing a roller, the pocket being defined by the pair of bent portions and the pair of inner wall surfaces and formed by punching the cage, wherein radially inner one of the inner wall surfaces is formed as a guiding surface for guiding a substantial roller PCD position of an end surface of the roller, wherein each of the pair of bent portions includes only a first extended portion extending in one of cage thickness directions; a second extended portion extending in the other cage thickness direction; and an intermediate sloped portion disposed between the first and second extended portions, and wherein a roller retaining pawl for retaining an outer circumference of the roller is provided at a top side surface of each of the first and second extended portions so as to protrude into the pockets.