Roller bearing part e.g. rolling bearing ring, has touch contact whose surface is separated from surface of touch contact of projection at low load, where surfaces of contacts of projections are merged with one another at high load

摘要

The bearing part (1) has a body provided with a rotational axis and a contact surface on an outer surface (3) at periphery of the body. A flat touch contact is formed at the bearing part in a section of the contact surface during a loading condition. A surface of a touch contact of a projection is spatially separated from a surface of a touch contact of another projection at a low load. The surfaces of the touch contacts of the projections are merged with one another at a high load. A recess (7) is arranged between the projections.