雙向推力球軸承
52202M,52213,52240.52238.52212M
推力球軸承(銅保持器)
51102M-51184M,51203M-51292M,53201M-53244M,52202M-52240M
推力球軸承(鐵保持器)
51100-51184,51200-51292,53201-53244,52202-52240