Tapered roller bearings are a type of rolling bearing characterized by a separable inner and outer ring structure. The rollers are cylindrical in shape and make line contact with the raceways, endowing them with high radial load capacity, low friction coefficient, and high-speed adaptability. They are widely used in heavy-load, high-speed transmission scenarios such as machine tool spindles, motors, gearboxes, automotive transmissions, and metallurgical equipment, serving as a key basic component for achieving smooth operation in mechanical equipment.