The CNC rotary table provides the rotation coordinate for the machine tool, enabling three - axis machine tools to achieve four - axis and five - axis machining. The CNC high - precision rotary table has characteristics such as "high torque, high precision, and strong rigidity", and can realize multi - axis positioning machining and linkage machining. The CNC rotary table bearing can bear the weight of the workpiece and can also ensure the rotational accuracy under load conditions. As the core component of the rotary table, the rotary table bearing not only has a high load - bearing capacity but also has high rotational accuracy, high anti - overturning ability, and high rotational speed ability during the operation of the rotary table. According to the operating conditions of the CNC rotary worktable, different types of rotary table bearings can be selected.