Vehicle-use bearing apparatus

摘要

A vehicle-use bearing apparatus including a hub wheel formed of steel material to which a wheel is mounted and a rolling bearing mounted to an outer periphery of the hub wheel. An end portion of the hub wheel is expanded radially outward toward an inner ring provided to the rolling bearing to be formed into a caulked portion and a percentage of sulfur content is adjusted to be 0.020% by weight or less in steel material of which the 10 caulked portion is formed.