Patent ID: 7011452

Claim:
A rolling bearing unit with shield plate, comprising: an outer ring having an outer ring raceway and an anchor groove formed on an inner peripheral surface thereof, the anchor groove being circumferentially provided at an axial end portion separated from the outer ring raceway and having an outside facing side surface; an inner ring having an inner ring raceway formed on an outer peripheral surface thereof; a plurality of rolling members rotatably positioned between the outer ring raceway and the inner ring raceway; and a shield plate formed in a generally circular ring shape and provided with an inside facing, radial outer portion and an outer peripheral edge portion anchored in the anchor groove on the inner peripheral surface of the outer ring at the axial end portion of the outer ring, the shield plate having an elastic seal member formed of a curable polymer substance in a solid state and integrally attached generally circumferentially to the radial outer portion of the shield plate, the elastic seal member being disposed slightly radially inwardly with respect to the outer peripheral edge portion of the shield plate, such that the seal member is elastically held between the radial outer portion of the shield plate and the outside facing side surface of the anchor groove, and the shield plate formed with cutouts along the outer peripheral portion thereof, and wherein the number “n” of the cutouts and the number “Z” of the rolling members of the rolling bearing are controlled to satisfy each of the following four relationships (1) n≧4, (2)n≠Z, (3)n≠Z±1 and(4)n≦2Z.