Miniature bearing

Micro bearings refer to various types of bearings in the metric series with an outer diameter less than 9mm and the imperial series with an outer diameter less than 9.525mm! The main materials include carbon steel, bearing steel, stainless steel, plastic, ceramics, etc. Among them, the minimum inner diameter can reach 0.6mm, and there are generally more ones with an inner diameter of 1mm.
In ultra small aperture micro bearings, there are six types of micro deep groove ball bearings, including metric 68 series, 69 series, 60 series, and imperial R series. On this basis, they can also be divided into bearing series with ZZ steel plate dust cover, micro bearing series with RS rubber seal ring, Tefulong bearing seal ring series, and series with flange guard edge, etc.