... surface in the housing and the shaft. 4. Single direction thrust ball bearings, as their name suggest, can accommodate axial loads ... . They must not be subjected to any radial load. 5. Bearing Number 1) 51100, 51101, 51102, 51103, 51104, 51105, 51106, 51107 ... , 51317, 51318, 51320 F-series F2-6, F2X-7, F3-8, F4-9, F4-10, F5-11, F6-12, F7-15 ... , F7-17M, F8-16M, F8-19M, F9-20M, F10-18M Thrust Ball Bearing