Non standard micro bearings refer to micro bearings that do not meet the external dimensions specified in national standards, usually used for special equipment or customized scenarios. Non standard: dimensions (inner diameter/outer diameter/thickness) or structures that do not meet national standards (such as GB/T 273 series), need to be customized according to customer needs
2. For example, British bearings with an inner diameter of 3.175mm and an outer diameter of 6.35mm belong to this category.
Application scenarios: mostly used in special fields such as shower rooms, furniture, toys, medical equipment, etc., with small batch size and low universality
