Koyo Seiko Company, Ltd.

Koyo Machine Industries Company Limited

Mitsumasa Ozeki

Nobuo Komeyama

A cross shaft joint tiltably coupling two shaft members each other includes: a cross shaft which includes four shaft portions and is arranged between the two shaft members; outer ring cups rotatably provided to the four shaft portions, respectively, the outer ring cups being adapted to be coupled to corresponding shaft members; and an attachment portion to which a balance weight for balancing the outer ring cups can be attached is formed on at least one of the outer ring cups.

Cross shaft joint

In a cross joint () outwardly fitting a bearing cup (outer ring member) to each of four pieces of shaftsof a cross shaft member () via a cylindrical member (rolling member), race portions () formed on a side of the cross shaft member () and on a side of the bearing cup () and a shoulder portion () provided between respectives of neck portions of two of the shafts () of the cross shaft member () contiguous to each other are subjected to roller burnishing.

Growing community of inventors

Nara, Japan

Mitsumasa Ozeki