Nova Patents
SI1375684T2

Process for the manufacture of bearing rings for large rolling bearings

Abstract

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Term

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3 claims: 1 independent, 2 dependent

  1. 1
    Appointment of Slovenia in EP 1375 684 B2 method of manufacturing bearing rings for large roller bearings Claims 1. A method of manufacturing a bearing ring, for a large rolling bearing, which comprises at least one roller rail with a hardened edge layer, which lies in the vicinity of the area, which can not be quenched, in which the heating of the boundary layer, which is to be quenched - while when the bearing ring is rotated about its axis (A) - a fully exposed to electromagnetic radiation of at least one annular inductor at the same time preserving the distance, and after heating of the inductor as a whole simultaneously quenches, characterized in that the bearing ring prior to heating by the inductor fitted with a notch, which surface separates the boundary layer, which is to be quenched, the area which can not be quenched, and that the distance (a, al, a2) of the inductor from the surface of the boundary layer, which is to be quenched in the case of the radial roller rail ( 48, 51) is from 1 to 2 times the depth (T) of the surface, which is to be quenched in the event of an axial roller rails (47, 49, 50), which is adjacent to the inner surface (51) of the bearing ring is at the outer edge (al) from 0.6 to 1 times the depth (T) of the surface, which is to be quenched, and the inner edge (a2) from 1.5 to 2 times the depth (T) of the surface, which is to be quenched, whereby the distance (al, a2) continuously vary from the outer edge toward the inner edge;and in the case of axial roller rail (49), whose inner diameter is larger than the diameter of the inner surface (48) of the bearing ring is uniformly 0.6 to 1 times the depth (T) of the surface, which has to be quenched.