Tapered roller bearings are separable and have the following components: outer ring, inner ring, and roller assembly (containing the rollers and a cage). The non-separable inner ring and roller assembly is called the cone, and the outer ring is called the cup. Internal clearance is established during mounting by the axial position of the cone relative to the cup.

In many applications tapered roller bearings are used in back-to-back pairs so that axial forces can be supported equally in either direction.

Pairs of tapered roller bearings are used in car and vehicle wheel bearings where they must cope simultaneously with large vertical (radial) and horizontal (axial) forces. Applications for tapered roller bearings are commonly used for moderate speed, heavy duty applications where durability is required. Common real world applications are in agriculture, construction and mining equipment, axle systems, gear box, engine motors and reducers.


Tapered roller bearings with metric dimensions according to DIN ISO 355 and DIN 720, edge radius excluded

Tolerances, bearing clearance
The boundary dimensions of metric bearings are in accordance with ISO 355. Inch bearings conform to AFBMA Standard 19. Single row tapered roller bearings are manufactured to Normal tolerances as standard. Values for Normal and CLN tolerances correspond to ISO492.

ROLLFINE Tapered roller bearings are preferably manufactured with pressed steel cages. Furthermore we offer cages of machined brass and welded pin-type of steel. Since cages may protrude slightly, the adjacent part fitting dimensions must not be ignored.