Micro bearings are a type of rolling bearing with a nominal outer diameter less than 26mm, which are commonly used mechanical components in the fields of industrial equipment and precision instruments. Shanghai Baihe Bearing Manufacturing Co., Ltd. and other manufacturers position it as a core product in the industrial and automotive markets, mainly used in industrial robots, brushless micro small high-speed motors, dental medical equipment and other scenarios This type of bearing adopts a single row deep groove design, providing OPEN/ZZ/2RS three sealing methods, with low vibration, low noise characteristics, and high-speed capability of tens of thousands of revolutions per minute. The product models cover 684, 685, 687 and other series, with typical dimensions including inner diameter of 8.99-9mm, outer diameter of 17mm, and width of 5mm. The accuracy level meets the P0/P6/P5 industry standards. The production process adopts key technologies such as precision forging and ultra precision grinding, with a monthly production capacity of 1000 pieces and support for non-standard customization . The industry development trend shows that it is iterating in the direction of miniaturization and long life, and ultra micro bearings with an outer diameter less than 9mm have achieved mass production
