ANTIFRICTION BEARING RACE, PARTICULARLY FOR HIGHLY STRESSED ANTIFRICTION BEARINGS IN AIRCRAFT POWER UNITS AND METHODS FOR THE PRODUCTION THEREOF

摘要

The invention relates to an antifriction bearing race, particularly for highly stressed antifriction bearings in aircraft power units, which are comprised of a fixed joining of two layers made of different metallic materials, the area of the raceway (6) for the roller bodies (4) being made of a steel with a very high degree of hardness and resistance to wear, and the core area (7) of the antifriction bearing race (2) being made of a high-strength steel. According to the invention, a powder-metallurgical high-speed steel having a high content of carbide-forming alloying elements and a high carbon content is provided as the material for the raceway (6) of the roller bodies (4), whereas the material for the core area (7) of the antifriction bearing race (2) is made of a hot-work steel with, in comparison to the raceway material (11), a lower content of carbide-forming alloying elements and with a low carbon content, both materials being joined to one another with material fit by diffusion welding.