30206 - Koyo Metric Taper Roller Bearing - 30x62x17.25mm 63112rsrc3FAG and the separable outer ring

and the separable outer ring referred to as the cup which allows the cone to be mounted separately

63 11 C3 Medium Series 55mm - Bore Size Open Type Radial Internal Clearance Greater Than Normal

This 6210DDUC3 NSK bearing is a Sealed Deep Groove Radial Ball Bearing with a larger than standard radial internal clearance The bearing's dimensions are 50x90x20

This 6310 2Z SKF bearing is a Shielded Deep Groove Radial Ball Bearing with a standard radial internal clearance The bearing's dimensions are 50x110x27

30206 - Koyo Metric Taper Roller Bearing - 30x62x17.25mm 63112rsrc3FAG and the separable outer ringThis 30206 bearing is a metric taper roller bearing. The bearing's dimensions are 30x62x17. 25mm 3 02 06 Tapered Roller Light Series 30mm Bore Size