7221CD/P4A - SKF Precision Angular Contact - 105x190x36mm Calibrating Fluid 2 this bearing also has a

this bearing also has a standard radial internal clearance The bearing's dimensions are 25x52x15

This S682 2Z ZEN bearing is a Stainless Steel Shielded Miniature Deep Groove Radial Ball Bearing with a standard radial internal clearance The bearing's dimensions are 2x5x2

This R380 is a medium

This 7007A5TRDUDMP3 bearing is a Super Precision angular contact bearing with a 25° contact angle and a phenolic cage

7221CD/P4A - SKF Precision Angular Contact - 105x190x36mm Calibrating Fluid 2 this bearing also has a72 21 CD P4A Light Series 105mm Bore Size 15 Contact Angle, High Capacity Design Single Standalone Bearing Carbon Chromium Steel Accuracy Class