... bearings can be broadly classified into four types: Single row angular contact ball bearings 7000C, 7000AC, 7000A, ... and the two outer ring raceway combination of single - Outer Ring Road dual-roll and ... the two inner ring raceway combination of single - Double Raceway Road, outer and inner two ... Four-point contact ball bearing QJ0000, QJF0000Single row angular contact ball bearings and ball bearing ...