Abstract: A lubricating system for high speed ball bearings includes forming the cage into a scalloped ring and rotatably supporting it in an annular channel formed in the inner split race centrally of the balls and judiciously locating lubricating passageways in the inner split race to communicate with this channel and where the side walls of the scalloped ring and the channel are dimensioned to define a gap for leading lubricant to and from internally of the bearing. This provides positive lubrication for the cage, balls and races by the same lubricant flow while also achieving unrestricted discharge of the lubricant from the bearing interior.