Type SMX Miniature Ball Bearing in Stainless Steel Application This ball bearing is specially designed for miniature applications in industries such as: - Clock- and Watchmaking, - Aeronautics, - Food-processing, - Medical or pharmaceutical technology, etc... Features - All-metall (STAINLESS STEEL - BRASS); - Housing in stainless steel 1.4112; - Solid brass precision-milled ball tray; - Balls in stainless steel.