Patent ID: 7534047

Claim:
An assembly comprising a shaft having a shoulder spaced from a free end, a journal of smaller diameter than the shaft between the shoulder and the free end, and a contoured fillet leading from the journal to the shoulder, a bearing assembly adapted to be fitted onto the journal and into another structure to permit relative rotation between the shaft and the other structure, the bearing assembly comprising, a roller bearing including an inner race fitted around the journal and having an outwardly directed raceway thereon, an outer race having an inwardly directed raceway thereon, and roller elements located between and contacting the inner and outer raceways, a backing ring having a contoured surface, complementary to and engaging said contoured surface of the fillet, the contoured surfaces cooperating to fix the backing ring against radial and axial movement on the shaft when the bearing is installed thereon, an annular wear ring interposed between and engaging the inner race and the backing ring, the wear ring having a first end bearing against the inner race and a second end received in interference relation to radially and axially fix the second end on the journal, a first sealant ring interposed between and engaging the shaft shoulder and the backing ring, and a second sealant ring interposed between and engaging the wear ring and the backing ring.