Abstract: The cageless thrust bearing with unguided cylindrical rollers comprises a pair of thrust bearing races with axially separated flat thrust raceways. Cylindrical rollers all having the same diameter are located between the separated flat thrust raceways. The spacing of the rollers is such that the rollers become radially aligned in the bearing under a rotating thrust load, without side or end guidance of the rollers.

Abstract: The roller thrust bearing cage and roller assembly includes an annular cage with a plurality of circumferentially spaced pockets. Each of the pockets is shaped to give proper guidance to the roller when the extended center line of the roller passes through the axis of the annular cage. Preferably each pocket has two radially, inwardly converging sides and preferably, the pockets are trapezoidal. A cylindrical roller is preferably located in each of the pockets.

Abstract: The separator ring to be used with thrust bearings is an annular member with a plurality of circumferentially separated roller engaging portions. The rollers have outer ends constructed to mate with the roller end engaging portions of the annular member. The roller engaging portions on the annular member may be protrusions extending radially inwardly toward the axis of the bearing with the rollers having depressions on the outer ends for receiving the protrusions or alternatively, the roller engaging portions may be radially outwardly extending depressions with the rollers having outer surfaces which fit into the depressions.