Miniature ball bearings with a bearing outer diameter of less than 9 mm, a bearing inner diameter of less than 10 mm, and a bearing outer diameter of 9 mm or more.
WIS supply small ball bearings below :
Metric miniature ball bearings
Inch miniature ball bearings
Flange miniature ball bearings
Bearing material : chrome steel,stainless steel, highcarbon steel
Application It can be used for parts that rotate at high speed with low friction torque and for all applications that require low noise and low vibration, like toy,small power tool, robot, vacuum,fish reel, 3d printer.