A bearing seal includes a metal core having a radially outer portion engaged in an inner seal groove of a bearing outer race. The core includes a bent portion engaged in the seal groove, a radially outer flange extending inwardly from an end of the bent portion located inside the bearing, a tapered tubular portion having a large-diameter end thereof connected to a small-diameter end of the outer flange and a small-diameter end thereof located axially outwardly of its large-diameter end, and a radially inner flange extending inwardly from the small-diameter end of the tubular portion. A rubber seal is fixed to an inner surface of the metal core that faces the interior of the bearing. The rubber seal includes a thick-walled portion having an inner radial step, and formed with three lips that elastically contact the inner race outer surface. The thick-walled portion includes a small-diameter thick-walled portion.