The bearing's dimensions are 55x100x21
72 04 B E P 72 Series - Light 20 mm - Bore Size Contact Angle Single Row Bearing with a 40° Contact Angle Optimized Internal Design Glass Fibre Reinforced PA66 Cage (Polyamide)
70 14 CD /P4A DG B Series - Extra Light Bore Size - 70mm 15 Degree Contact Angle Precision Rating Duplex Universal Medium Preload
72 15 B E CB J 72 Series - Light 75 mm - Bore Size Contact Angle Single Row Bearing with a 40° Contact Angle Optimized Internal Design Universal Bearings
This 6000ZZNR NSK bearing is a Shielded Deep Groove Radial Ball Bearing with a snap ring groove in the outer ring and an appropriate snap ring
1311EKTN9/C3 - QBL Double Row Self-Aligning Bearing - 55x120x29 7221CDGA/P4A The bearing's dimensions are 55x100x21This 1311EKTN9 C3 bearing is a double row, narrow series, metric self aligning bearing with an optimized internal design for increased load carrying capacity, a 1: 12 tapered bore, a glass fibre reinforced PA66 cage and a larger than normal radial internal clearance. The bearing's dimensions are 55x120x29. 13 11 e k tn9 c3 Narrow Bore Size 55mm Extra Capacity Tapered Bore (1: 12 on Diameter) Glass Fibre Reinforced PA66 Cage, Ball Centred Radial