Patent ID: 8876396

Claim:
A roller bearing, comprising: an outer ring having a substantially cylindrical internal bearing surface, an outside surface defining a plurality of protuberances configured to rollingly engage and grip a mating surface of a shaft, and the outer ring having a protective coating applied thereto; an inner ring coaxially disposed at least partially in the outer ring about a common axis of rotation and having a substantially cylindrical external bearing surface; the external bearing surface and the internal bearing surface defining an annular cavity therebetween; and a plurality of rolling elements disposed in the annular cavity, the rolling elements being in rolling engagement with the external bearing surface and the internal bearing surface; the plurality of protuberances are operable to rollingly engage the mating surface rotating about a mating surface axis of rotation, the mating surface axis of rotation being substantially parallel to the common axis of rotation; and the plurality of protuberances are operable to grip the mating surface being translated along the mating surface axis of rotation.