Miniature ball bearings, typically under 10 mm in bore size, are used in a wide range of compact, high-precision, and low-friction applications. They are essential in robotics for smooth joint movement, in medical devices such as dental drills, pumps, and diagnostic tools for quiet and accurate operation, and in drones and UAVs for lightweight, high-RPM motors and camera gimbals. These bearings are also found in small electric motors used in toys and instruments, in computer equipment like HDDs, cooling fans, printers, and scanners, and in automotive components such as ABS sensors, throttle systems, and HVAC actuators. Additionally, they are used in precision instruments, optical devices, laboratory equipment, industrial automation systems, micro gearboxes, conveyor rollers, hobby devices such as RC cars, drones, and 3D printers, and power tools, where their ability to handle high speed, low friction, and compact design ensures smooth performance in drills, grinders, rotary tools, and other handheld or compact machinery. Their popularity comes from their compact size, high speed capability, low friction, long life, and exceptional precision.