C&U four-point contact ball bearings are radial single row angular contact ball bearings featuring raceways that can handle axial loads acting in both directions. A limited radial load can be supported for a given axial load. They take up considerably less axial space than double row bearings. The split inner ring design enables inclusion of a large number of balls producing a high load carrying capability. The outer ring with ball and cage assembly can be mounted separately from the two inner rings.