A method and apparatus for assembling bearings and a stub into a bore of a hub. The apparatus includes a block defining a receiving position for the hub. A feed mechanism arranges plurality of bearings in the form of an annular array. A first mandrel is axially displaceable toward one side of the hub to push the annular array of bearings into the bore of the hub. A second mandrel is axially displaceable toward an opposite side of the hub to push a stub within the annular array of bearings in the bore of the hub. The stub includes at least one outwardly biased detent for retaining the bearings in the hub.