4304-BB-TVH - FAG Deep Groove Radial Ball Bearings - 20x52x21mm 3MM 9126 DUL This 3214B 2RSTN bearing is

This 3214B 2RSTN bearing is a metric double row angular contact bearing with a rubber seal on both sides of the bearing

The dimensions of the SKF N321ECP bearing are 105x225x49mm

B 719 10 E T P4S DU L Standard Steel Balls Extremely Light Series 50mm - Bore Size 25° Contact Angle Phenolic Cage Accuracy Class Duplex Universal Light Preload

This 6824-2RS1 bearing is a Sealed Thin Section Deep Groove Radial Ball Bearing with a standard radial internal clearance

4304-BB-TVH - FAG Deep Groove Radial Ball Bearings - 20x52x21mm 3MM 9126 DUL This 3214B 2RSTN bearing is43 04 bb tvh Double Row, Medium Series 20mm Bore Size Paired, Back to Back Open Type Plastic Cage Normal Internal Clearance