A BEARING APPARATUS FOR A WHEEL OF VEHICLE

摘要

According to the present invention, there is provided a bearing apparatus for a wheel of vehicle which can protect the encoder, improve the sensing ability of the detecting sensor as well as prevent penetration of rain water or dust and leak of the differential gear oil. The bearing apparatus for a wheel vehicle is characterized in that: the sealing means (13) of inboard side of said sealing means (12 and 13) comprises an annular supporting plate (17a) fitted onto the outer circumferential surface of one of the inner rings (10); a pulser ring (17) having a encoder (17b) bonded on the outer circumferential surface of the supporting plate (17a); and a sealing plate (16) including an annular core member (18 and 22) fitted onto one end of the outer member (4) and covering the cylindrical portion of the encoder (17b) and a lip (19a) bonded on the core member (18 and 22) and sliding contact with the inner ring (10) ; and in that said bearing apparatus further comprises a detecting sensor (20) suspended from the axle housing "H" and opposed to the encoder (17b) via a predetermined radial gap; and sealing lips (19b and 19c) arranged between the core member (18 and 22) and the axle housing "H" to seal the detecting sensor (20).