Nsk Corporation

Azusa Otani

Ryosuke Yamada

Jun Liu

Kouji Kobayashi

A diameter dimension of a chamferwhich is formed on axial end faces of a cylindrical rollerwhich is retained in each pocketof a cagewhose axial positioning is realized by a roller guide at a portion which lies closer to an outside diameter side thereof is made such that a central flat surfacewhich lies on an inside diameter side of the chamferis not exposed from an external surface of an outside diameter side flat plate portion. Then, a difference between a minimum value &#x394;of an amount by which the cylindrical rollerprojects from the external surface of the outside diameter side flat plate portionand a dimension Wof the chamferwith respect to a diameter direction thereof is made smaller than a thickness Tof the cage

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Fujisawa, Japan

Azusa Otani