Patent ID: 7674044
Filing Date: 2010-03-09
Classification: F16C,F16J

Abstract:
1. A sealing device attached to a metal outer race in a bearing portion of an axle suspension apparatus for a motor vehicle and slidably brought into close contact with a rotation shaft, said sealing device comprising: a metal mounting ring fixed to said outer race; a rubber-like elastic body attached to said metal mounting ring; and a side lip slidably brought into close contact with an end face portion of said rotation shaft and provided as a part of said rubber-like elastic body, the sealing device further including a flange portion of said mounting ring located toward an outer side in a diametrical direction; and an end face seal portion of said rubber-like elastic body, said end face seal portion being attached to said flange portion and brought into close contact with an end face portion of said metal outer race, the end face seal portion of the rubber-like elastic body being provided with a bead-like projection brought into close contact with the end face portion of the metal outer race, the end face seal portion of the rubber-like elastic body being provided with a labyrinth seal positioned at an outer periphery of the side lip and forming a small annular gap with respect to the end face portion of the rotation shaft so as to achieve a seal operation, the labyrinth seal including a projection or groove in an end face surface of the end face seal portion, the projection or groove facing the end face portion of the rotation shaft.