Patent Number: 7,707,723

Title: Method of producing a roller thrust bearing having a plurality of rows of rollers

Abstract: A method is provided for producing a roller thrust bearing having a plurality of rows of rollers, the bearing featuring reduced differential slip, reduced friction and wear, and increased longevity without flaking. The method includes forming a cage to accommodate the rollers, crowning the rollers, and arranging the rollers in pockets such that the rollers held by a pocket have respective end surfaces in direct contact with each other.

Inventors: Tamada; Kenji (Kuwana, JP), Maeda; Kikuo (Kuwana, JP), Kawamura; Tomoaki (Iwata, JP), Nakashima; Hirokazu (Kuwana, JP), Fujita; Takumi (Kuwana, JP), Sasabe; Mitsuo (Kuwana, JP)

Assignee: NTN Corporation

International Classification: B21K 1/10 (20060101)

Expiration Date: 5/04/12018