Jtekt Corporation

Setsuo Nagai

Takeshi Tsuda

Kazuki Higashida

A concave surfaceis formed in an outer peripheral surface of each of pillar portionsof a cage. A plurality of recessesandare formed in outer peripheral surfaces of annular portionsandof the cage. There are provided passagewaysandcommunicating respectively with the recessesand. An axially-outer end of each of the passagewaysandis open to an axial inner end face of the annular portionor to the concave surfaceof the pillar portion

Cage for rolling bearing and rolling bearing having the same

An inventive ball bearing retainer () is entirely composed of a resin composition, and has pocket surfaces () for retaining balls () and projections () provided on the pocket surfaces () and containing a solid lubricant (CB). A ball bearing () incorporates the ball bearing retainer (). By the effect of the solid lubricant (CB), the projections () are less liable to be worn out in a short period particularly when the ball bearing () is used in a higher temperature environment. The projections () define clearances between the balls () and the pocket surfaces (), making it possible to maintain the effect of preventing noise, increase in the torque of the ball bearing (), reduction of the service life of a lubricant and the like for a longer period of time.

Growing community of inventors

Kashiwara, Japan

Setsuo Nagai