Forging Large Bearing Outer Rings

Bearing outer rings are critical components in mechanical systems for reducing friction. The machining process includes steps such as forging, turning, heat treatment, and grinding. The sequence of these processes may vary depending on the manufacturer, but it typically involves turning to create key features, heat treatment to enhance hardness, and grinding to achieve final precision.
Bearing outer rings should be made of high-strength bearing steel, heated and pressed into a ring shape through forging to ensure material uniformity. Then, CNC lathes are used for turning, machining key features such as raceways, inner and outer chamfers, sealing grooves, and inner and outer diameters. Heat treatment of bearing outer rings, including quenching and tempering, can significantly improve the hardness and wear resistance of the outer ring to adapt to high-load environments. Finally, rough grinding, fine grinding, and superfinishing are used to optimize the finish of the raceway and outer surfaces, and rigorous inspection is performed to ensure compliance with standards.