Manufacturing method of track wheel of rolling bearing and method of manufacturing rolling bearing

摘要

After the ring member is cut out from the material, the surface hardened layer is formed, and the quenching and tempering are performed, and after the quenching and tempering are carried out, the ring member of the rolling bearing is provided with a series of steps for polishing the inner diameter surface and the outer diameter surface of the ring part, and the quenched member is quenched so that the surface temperature becomes 50 ° C. or less after quenching and tempering is performed .As a result, an intermediate member of the track ring of the rolling bearing having an absolute value of the average residual stress of each portion in the radial direction from the surface to the core part, and the inner diameter surface and the outer diameter surface of the intermediate member are polished, and a ring ring having a high degree of roundness and a rolling bearing having the orbiting wheel are obtained .