Process for the manufacture of bearing rings for large rolling bearings

摘要

In producing a bearing ring for large roller bearing, in which race rim zone is hardened by heating with electromagnetic field of inductor(s) whilst rotating ring about its axis, then chilling, the distance of inductor from rim surface is: 1-2 times depth (T) to be hardened for radial race; 0.6-2 x T and 1.5-2 x T for outer and inner rims of axial race bounded by inner ring surface; and 0.6-1 x T for axial race with inside diameter greater than that of inner ring surface.