초록 ▼

Disclosed is a double row tapered roller bearing assembly employing a contoured, maximum journal-contact bearing seal wear ring especially adapted to be installed on a journal at the end of a shaft or axle with the wear ring providing an interference fit contact area engaging the journal over at lea

Disclosed is a double row tapered roller bearing assembly employing a contoured, maximum journal-contact bearing seal wear ring especially adapted to be installed on a journal at the end of a shaft or axle with the wear ring providing an interference fit contact area engaging the journal over at least a major portion of the axial length of the wear ring. Stress risers are eliminated by providing smooth contoured surface junctures to thereby substantially reduce fretting wear on the journal, with the increased contact area facilitating heat transfer to the shaft to extend seal life.

대표청구항 ▼

In combination with an axle having a shoulder spaced from a free end and a journal of smaller diameter extending from the shoulder to the free end, an improved bearing assembly fitted onto the journal and retained thereon by an end cap mounted on said free end to permit relative rotation between the

In combination with an axle having a shoulder spaced from a free end and a journal of smaller diameter extending from the shoulder to the free end, an improved bearing assembly fitted onto the journal and retained thereon by an end cap mounted on said free end to permit relative rotation between the axle and an element supported by the bearing, said bearing assembly comprising an inboard bearing cone and an outboard bearing cone mounted on said journal in axially spaced relation to one another, each said cone defining an outwardly directed, tapered inner raceway and each having an inner diameter providing an interference fit on said journal, a cylindrical spacer element mounted on said journal between said bearing cones and maintaining said bearing cones in axially spaced relation, a bearing cup defining a pair of inwardly directed tapered outer raceways located one in radially outward spaced relation to each of said inner raceways, rolling elements located between the inner and outer raceways, a backing ring mounted on said journal and engaging said shoulder in a manner to radially fix the backing ring on the axle, a first seal wear ring mounted on said journal and having a first end surface engaging said backing ring and a second end surface engaging said inboard bearing cone and a second seal wear ring mounted in contact with the said outboard bearing cone and said end cap, and a pair of annular seal elements interposed one between said bearing cup and each of said seal wear rings forming a lubricant barrier at each end of the bearing, said first seal wear ring having an inner generally cylindrical surface extending over a major portion of its axial length, said generally cylindrical inner surface having a diameter providing an interference fit with said journal and terminating at each end in a smoothly curved, outwardly flared surface portion.