Wheel bearing device

A wheel bearing device comprising:

• an outer member integrally provided with double-row outer rolling faces on an inner circumference of the outer member;
• an inner member including a hub wheel provided with an axially-extending narrowed stepped portion on an outer circumference of the hub wheel and at least one inner wheel press-fitted into the narrowed stepped portion, the inner member having double-row inner rolling faces opposed to the double-row outer rolling faces on an outer circumference of the inner member;
• double-row rolling elements rollably accommodated between the inner rolling faces and the outer rolling faces;
• and
• a seal member for sealing a space between the outer member and the inner member by fitting a core metal to an opening of the outer member, fitting a metallic ring to the outer circumference of the inner member so as to be opposed to the core metal, the core metal being provided with an elastic seal lip, and causing the metallic ring to contact the seal lip,
• wherein a ring shaped outer member-side weir portion protruding further than an outer edge of the metallic ring in a radial outward direction to surround the metallic ring is provided with the outer member, and
• an outer member-side expanded portion for holding a lubricant is formed on an inner circumferential face of the outer member-side weir portion.