Miniature and Instrument Metric Series 9.000 Millimeter (mm) Width (B) and 3,879 Newton (N) Dynamic Load Rating (Cr) Stainless Steel Ball Bearing

AST Bearings has a huge selection of miniature ball bearings and instrument series bearings with over 500 types available. Precision tolerances from ABEC-1 through ABEC-9 are generally available for most miniature products. Typical bore sizes of miniature bearings start at 3 mm with an outside diameter a mere 10 mm. Custom-made miniature bearings can have bore sizes as small as 1 mm!

Miniature Ball Bearings are small bearings with balls as their rolling elements. These small bearings have an outside diameter of less than ?” (<9.525 mm) or are small bearings with an outside diameter less than or equal to 1/2" (= 12.7 mm) having a ration of outside diameter to inside diameter equal to or less than two.