The inventions relate to the field of machine building, specifically to bearing units of machines operating under speed and load limit conditions. The technical result of the claimed inventions is an increase in the reliability of operation and of the operating life of a bearing during use under the maximum possible speed and load limit conditions. The essence of the invention consists in that each rolling element of the bearing is synchronized with external and internal races with the aid of a toothed engagement. Furthermore, parts of the races are fixed against rotation with the aid of at least one longitudinal projection or groove on a mounting surface of a toothed wheel and on the mounting surface of each race ring which is arranged along the generatrix of the cylindrical mounting surface and interacts with a reciprocal groove or projection on the surface of a corresponding link of a kinematic chain. The fixing of parts of the rolling element when the latter is assembled together with the pinions is carried out in an analogous manner. Rejection of a cage which is used in the known prior art makes it possible to significantly increase the reliability of operation of crankpin bearings, and to increase the specific technical characteristics of machines by increasing the load-bearing capacity and expanding the operating speed range of the bearings with a guarantee of the requisite operating life. To a very great degree, this involves gas-turbine and piston engines which are mounted in installations having maximum permissible working parameters.
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