8x22x11mm Bearing Shielded - Miniature Inner Diameter - 10mm the NJ209 inner diameter is

the NJ209 inner diameter is 45mm

5 x 8 x 3 Ball Bearing

Model 97-99

6314-2NSE Nachi Ball Bearing

the 21307EXW33K inner diameter is 35mm

8x22x11mm Bearing Shielded - Miniature Inner Diameter - 10mm the NJ209 inner diameter is8 x 22 x 11 Skateboard Sealed Ball Bearing 8 x 22 x 11 Skateboard Sealed Ball Bearing, bearing is Carbon Steel, 8 x 22 x 11 bearing has built in rubber seals in order to protect the moving elements from dust or any possible contamination, this is self lubricated bearings (bearing is already lubricated with oil), oil lubrication is to ensure fastest possible speeds. 8 x 22 x 11 Skateboard Bearing Deep Groove Ball Bearing Inner & Outer Races: Carbon