Bearing component part, bearing component and process for manufacturing a bearing component

A process for manufacturing a bearing component, such as a bearing ring or a roller, comprising:

• (A) providing a bearing component part comprising:
• at least one circumferential peripheral surface, wherein the circumferential peripheral surface presents at least one groove extending along at least a part of the circumference of the peripheral surface, wherein the groove is arranged to receive a second material;
• and
• the peripheral surface further presenting a first portion and a second portion located on opposite sides of the at least one groove along the circumference of the peripheral surface,
• wherein the bearing component part comprises a weldable metallic material,
• (B) fixating a sheet metal strip to the bearing component part, so that the at least one groove and the sheet metal strip creates at least one closed space,
• (C) filling the at least one closed space with the second material, and diffusion welding the second material to thereby fixate and bond the second material to the bearing component part.