Support rollers are either needle roller or cylindrical roller bearings with an extra radially thick outer ring. Depending on their series, support rollers may be both separable and non - separable radial bearings.

Support rollers usually run with their outer ring either directly on a guide track or against a machine surface that is for guidance.

Due to their extra - thick outer rings, Support rollers are able to accept high radial forces as well as shock loads.

Their ability to accommodate axial forces, however, depends on the particular design of the support roller.

Support rollers are usually exposed to minor misalignments during operation. To minimize the negative effects of such misalignments, (e.g. high edge stresses), support rollers are more frequently used with sphered outer rings.

Mouken - support rollers with parallel (cylindrical) outer diameters are indicated by the suffix „X“.