UC210 50mm Black Oxide Plated Plated Insert 50mm Bore BearingUC210 50mm Black Oxide Plated Insert Ball Bearing 50mm Inner Diameter UC210 50mm 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. UC210 50mm Black Bearing Oxide Plated Insert Ball Bearing Shaft Diameter: 50mm Dynamic load rating: 35052 N