Roller bearing assembly

Claim 1

A self-aligning bearing comprising a housing adapted to be fixed to a support having a cavity for receiving a roller bearing assembly, said cavity being defined by an inner spherical surface, said housing being provided with a lubrication fitting communicating with a passage into said cavity, said roller bearing assembly being insertable and removable as a unit with respect to said cavity and comprising: inner and outer race means; a pair of spaced groups of rollers between said inner and outer races said inner race means having spaced frusto-conical raceways for theoretical line contact with the rollers and a concentric cylindrical bore for receiving a shaft; said outer race means comprising, a. a first member having and defined within an outer spherical surface corresponding to the inner spherical surface of said block cavity, a frusto-conical raceway for theoretical line contact with one group of rollers and a cylindrical bore extending outwardly of said raceway and a lubricating passage to be aligned with the lubrication fitting and passage of said housing; b. a second and ring member having an outside cylindrical configuration corresponding to said bore in said first member and received therein, and an inner frusto-conical raceway for theoretical line contact with the rolls of the other group of rollers, pin means in said passages restricting rotation of said bearing assembly; and means for retaining the second member of said outer race in oPerational position with respect to said first member of said outer race, said roller bearing assembly being so movable with respect to said housing to accommodate limited shaft misalignment with respect to said support.