6211 ZZ NSK Deep Groove Bearing - 55 x 100 x 21mm 6210dduc3 This W6000 SKF bearing is

This W6000 SKF bearing is a Open Type Deep Groove Radial Ball Bearing with a standard radial internal clearance The bearing's dimensions are 10x26x8

This 6212 2RS C3 KOYO bearing is a Sealed Deep Groove Radial Ball Bearing with a larger than standard radial internal clearance The bearing's dimensions are 60x110x22

(Non-interchangable with bearings having same basic part numbers

This 6307 NSK bearing is a Open Type Deep Groove Radial Ball Bearing with a standard radial internal clearance The bearing's dimensions are 35x80x21

6211 ZZ NSK Deep Groove Bearing - 55 x 100 x 21mm 6210dduc3 This W6000 SKF bearing isThis 6211ZZ NSK bearing is a Shielded Deep Groove Radial Ball Bearing with a standard radial internal clearance The bearing's dimensions are 55x100x21. 62 11 ZZ Light Series 55mm Bore Size Metal Shields on Both Sides of Bearing Normal Radial Internal Clearance