DS EN 3285:1994 Aerospace Series - Bearings, Airframe Rolling - Rigid Single Row Ball Bearings In Steel, Cadmium Plated - Diameter Series 0 And 2 - Normal Clearance Category - Dimensions And Loads Defines the characteristics of rigid single row ball bearings in steel, cadmium plated, of diameter series 0 and 2 designed to withstand only slow rotations and oscillations under load.