Wheel supporting structure

A wheel supporting structure for supporting wheels freely rotatably in relation to a vehicle body via a bearing section,

• wherein
• said bearing section is a tapered roller bearing comprising an inner member, an outer member fitted on the inner member from the outside, double rows of tapered rollers interposed between the inner member and the outer member, and a pair of seals for sealing both ends of the bearing section;
• said outer member has double raceway surfaces where the tapered rollers move rolling thereon;
• and
• said inner member is formed from a hub having a wheel mounting flange and an annular member fixed on the outer circumference of the hub, and has raceway surfaces where the tapered rollers move rolling thereon being formed on the outer circumference of the hub and on the outer circumference of the annualr member;
• whereas, of the pair of seals, the outer seal has three seal lips, one of which being located at the outermost position of the bearing section making sliding contact with the end face of the flange of the hub, while the inner seal has a seal lip that makes sliding contact with the mating annular metal member located between two annular metal members.