Abstract: A device and method for induction hardening rolling tracks of thrust blocks of bearings, according to a required hardening profile. At least two inductors arranged in tandem are used within a track to be hardened, at a predetermined distance from a surface of the track and the thrust block is rotated with respect to the inductors, so as to make them cover the entire track, with a complete 360° turn; the inductors, at least one first pre-heating inductor and one at least heating inductor, are shaped so as to generate a first and a second magnetic fields, respectively, both having flux lines which are perpendicular to each other, and one of the two inductors is mounted on an orientable head so as to be able to arrange the two inductors oriented according to the curvature of the track.