KBC Bearings 6300 radial ball bearings will accommodate moderate to heavy radial loads and low to moderate thrust loads in either direction. Deep groove radial bearings are manufactured as open type bearings for oil or grease lubrication. They are also available with metal shields and/or seals for use where moderate contamination is present in the operation. - KBC Bearings 6300 single row deep groove radial ball bearings will accommodate moderate to heavy radial loads and low to moderate thrust loads in either direction.