Patent ID: 8371586

Claim:
A bearing seal comprising a metal core having a radially outer portion configured to be engaged in a seal groove formed in a radially inner surface of an outer race of a bearing at its end portion, and a rubber seal fixed to an inner surface of the metal core that faces the interior of the bearing, wherein said metal core comprising a bent portion configured to be engaged in the seal groove, a radially outer flange extending radially inwardly from an end of the bent portion located inside of the bearing, a tapered tubular portion having a large-diameter end thereof connected to a small-diameter end of the radially outer flange and a small-diameter end thereof located axially outwardly of its large-diameter end, and a radially inner flange extending radially inwardly from the small-diameter end of the tapered tubular portion, and wherein said rubber seal covers the area of the metal core from the bent portion to an intermediate portion of the radially inner flange and includes a thick-walled portion covering the inner surface of the tapered tubular portion, said thick-walled portion having on a radially inner surface thereof three axially spaced apart seal lips configured to be elastically brought into contact with a radially outer surface of an inner race of the bearing, characterized in that the thick-walled portion includes a cylindrical small-diameter thick-walled portion extending axially outwardly from an outermost one of the three lips and covering a radially inner surface of the radially inner flange, and that the rubber seal further includes a thin-walled outer surface covering portion connected to the small-diameter thick-walled portion and covering the outer surface of the radially inner flange.