... Integral brass cage, double row symmetrical rollers, inner ring ride b) MA: Integral brass cage, double row ... symmetrical rollers, outer ring ride c) MB: Two piece brass cage, ... piece steel cage, double row symmetrical rollers, inner ring ride e) CTN1: double row symmetrical rollers, ... is 1:30 h) W33: With lubrication groove in outer ring, with three oil holes i) C2/C3 ...