Tapered Roller Bearings

About Tapered Roller Bearings

Tapered roller bearingsare rolling elementbearingsthat can support axial forces as well as radial forces.

The inner and outer ringracewaysare segments ofconesand the rollers are tapered so that the conical surfaces of the raceways, and the roller axes, if projected, would all meet at a common point on the main axis of the bearing. This geometry makes themotion of the conesremain coaxial, with no sliding motion between the raceways and the outside diameter of the rollers.

This conical geometry creates a linear contact patch which permits greater loads to be carried than with spherical (ball) bearings, which have point contact. The geometry means that the tangential speeds of the surfaces of each of the rollers are the same as their raceways along the whole length of thecontact patchand no differential scrubbing occurs.