UC201-8-BLK Oxide Plated Plated Insert 1/2 Bore BearingUC201 8 BLK Oxide Plated Insert Ball Bearing 1 2" inch Inner Diameter UC201 8 BLK Oxide Plated Insert Ball Bearing, bearing is wide inner ring with spherical outer ring, bearing is relubrication 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. UC201 BLK Bearing Oxide Plated Insert Ball Bearing Shaft Diameter: 1 2" inch Dynamic load rating: 12800 N Static