The MR52 is a miniature deep groove ball bearing with a 2 mm bore, 5 mm outer diameter, and 2.5 mm width (for the shielded ZZ type). It offers high-speed performance, supporting up to 85,000 rpm with grease lubrication, and has a basic dynamic load rating of 187 N. This compact bearing is widely used in small motors, precision instruments, medical devices, and electronic equipment
