Patent ID: 7837394

Claim:
A thrust bearing cage, comprising: a cage main body formed with an annular plate; and a plurality of cage pockets opened to be arranged along a circumferential direction on the cage main body, for retaining rollers having flat end faces, wherein a projection to pivotally support an end face of a corresponding roller is projected in a radial direction of the annular plate at a central part of a radial inner face of each cage pocket, said radial inner face extending in the circumferential direction, wherein the projection extends in a thickness direction of the cage main body, and includes a contact portion that is brought into a contact with a central portion or a vicinity thereof on the end face of the corresponding roller, and a non-contact portion that is adjacent to the contact portion in the thickness direction and that is not brought into contact with the end face of the corresponding roller, said projection being integrally formed with the cage main body, and wherein a flat portion is formed in a central part of the projection so as to be linearly extending in the thickness direction.