| 摘要 |
<p>PROBLEM TO BE SOLVED: To solve a problem of a seal member contacting with the side of a hub flange having axial lips of an elastic seal projected diametrically outward, wherein mud water, etc., stuck to the outer circumferential surface of the outer ring member easily flows to the axial lips side along the end surface of the outer ring member and is collected between the hub flange and the elastic seal, thereby causing the lowering of the sealing performance of the seal member. SOLUTION: In a seal structure 12 having a dam member 13a formed by extending and projecting a part of a core bar 13 upward from the outer circumferential surface of the cylindrical outer ring member 10 outward in the diametrically direction, when the mud water is splashed to a cylindrical outer ring member 10 in traveling of a vehicle, the dam member 13a can prevent the mud water from flowing toward the elastic seal 37 so as to maintain the sealing performance in the seal structure 12.</p> |
