UC209 45mm Black Oxide Plated Plated Insert 45mm Bore BearingUC209 45mm Black Oxide Plated Insert Ball Bearing 45mm Inner Diameter UC209 45mm Black Oxide Plated Insert Ball Bearing, bearing is wide inner ring with spherical outer ring, bearing is re lubrication groove with oil hole on set screw side, bearing is anti rotation pin on side opposite grease groove, bearing is nylon patched class 3A set screws. UC209 45mm Black Bearing Oxide Plated Insert Ball Bearing Shaft Diameter: 45mm Dynamic load rating: 32694 N