... catalog:Deep groove ball bearing,Angular contact bearing,Self-aligning bearing,Cylindrical roller bearing,Spherical roller bearing, Taper roller bearing,Needle roller bearing,Block pillow bearing, Auto bearing Retainer:copper ... steel cage, double row symmetrical rollers,inner ring rideCTN1: Double row symmetrical rollers ,nylon cageK: Tapered bore bearing, the taper is 1:12K30 ...