A wheel bearing apparatus has a seal (8) with a metal core (15) and a sealing member (6). The metal core (15) is fit into an outer-side end inner circumference of the outer member (10). The sealing member (16) with a first side lip (16a) is adhered to the metal core. The first side lip (16a) is inclined radially outward to oppose a metal annulus (17) mounted on a base (18) of a wheel mounting flange (4), via an axial gap. The sealing member second side lip (16b) is formed radially inward from the first side lip (16a) and is in sliding contact with the base (18), via an axial interference. The sealing member third side lip (19a) is inclined radially outward from a base (19), covering the outer surface of the metal core (15), toward the wheel mounting flange (4). The tip end of the third side lip (19a) is formed with a vertically flat surface opposing the inner-side surface (4b) of the wheel mounting flange (4, 28), via an axial gap (S1), to form a first labyrinth seal (20). The outer edge of the metal annulus (17) opposes a sealing member (16), via an axial gap, to form a second labyrinth seal (25).
Wheel Bearing Apparatus
2018-07-05
Patent
Elektronische Ressource
Englisch
Wheel bearing and a wheel bearing apparatus having the wheel bearing
Europäisches Patentamt | 2015
|