Eccentric anti-friction drive for fluid power apparatus

An eccentric drive comprising at least one anti-friction bearing having an inner race and an outer race, a deep drawn tubular member having two cylindrical peripheries arranged eccentrically with respect to one another, one of said two cylindrical peripheries being fitted to a rotatable member for rotation therewith, the other of said two cylindrical peripheries comprising one of the inner or outer race of said at least one anti-friction bearing, said tubular member comprising a cup having a first tubular portion and a second tubular portion integrally formed eccentrically with the first tubular portion, said rotating member comprising a shaft, said first tubular portion being fitted to the periphery of the shaft and the periphery of the second tubular portion comprising the inner race of the at least one anti-friction bearing, said second tubular portion having an end cover, and means connected to said end cover for retaining the at least one anti-friction bearing on the second tubular portion, said retaining means comprising a cap having an annular lip confronting said at least one anti-friction bearing, a hole in said end cover and resilient fingers on said cap engageable with said hole for securing the cap to the end cover.

An eccentric device comprising a rotatable shaft having a free end, an anti-friction bearing having an inner race and an outer race, a tubular member having two integrally formed cylindrical tubular portions arranged eccentrically with respect to one another, a first one of said cylindrical tubular portions being fitted to and supported by the periphery of said shaft for rotation of said tubular member therewith, a second one of said cylindrical tubular portions being hollow and extending axially beyond the free end of said shaft, said second tubular portion having an outer periphery comprising the inner race of said anti-friction bearing.