The main goal of the thesis was to optimize the solid of the bearing spacer for sleewingring bearings. The introductory part deals with theoreticel knowledge of sleewing ring bearings, methods of separating rolling elements and design solutions of bearing spacers. In the next part, the optimized variants of the bearing spacers are interpreted. The last part contains an evaluation of design solutions. The thesis also presents a production drawing of an optimized bearing spacer design.