The application of cylindrical roller bearings (CRB) is widespread in mechanical engineering. CRB can carry
comparatively high loads and are usable in high speed ranges. These bearings have been proven to be
variably applicable and economic. With lipped inner and outer rings CRB permit the transmission of axial
loads in addition to radial loads. The axial load is induced on the lip of the inner or the outer ring and transferred
by the roller end face contacts to the opposing lip. In comparison to an only radially loaded bearing, there are
additional friction losses in the contact between the lip and the roller ends as a result of sliding.
The limiting factors for the permissible axial load are high temperatures, which can cause smearing and
seizing, lip fracture, fatigue failure and wear. In consequence of the axial loading, the stresses in the contact
between the roller and the raceway rise and the fatigue durability of the bearing is reduced.
At high speeds the permissible thrust load is dominantly limited by high temperatures. At low speeds the
limiting factors are lip fracture and wear.
Within the examination an extensive test program with different bearing geometries is carried out. Thereby
the decisive measure is the friction torque of the bearings.