6303ZZ (I.D.=17mm, O.D.=47mm, Thickness=14mm); 6303ZZ bearing are shielded on BOTH SIDES to keep lubricant in; Chromium Steel long-life bearings, smooth and low noise.
6303-2RS (I.D.=17mm, O.D.=47mm, Thickness=14mm); 6303-2RS bearing are shielded on BOTH SIDES to keep lubricant in; Chromium Steel long-life bearings, smooth and low noise.