Patent ID: 6280093
Filing Date: 2001-08-28
Classification: B60B,F16C

Abstract:
A wheel supporting structure for supporting wheels freely rotatably in relation to a vehicle body via a bearing section, wherein the bearing section is a tapered roller bearing having an inner member, an outer member fitted on the inner member from the outside and double rows of tapered rollers interposed between the inner member and the outer member, the outer member comprising double raceway surfaces where the tapered rollers move rolling thereon, the inner member comprising a hub that has a wheel mounting flange and annular member fixed on the outer circumference of the hub, and provided with raceways, where the tapered rollers move rolling thereon, being formed on the outer circumference of the hub and on the outer circumference of the annular member, while the outer member having hardened layers on at least the raceway surface and in relieving recesses thereof.