The rotation speed of the rotary joint is also an important parameter for selecting a rotary joint. The speed is not as fast as possible, but it is selected according to the actual situation of the equipment. Rotary joints rotate due to their high speed, high heat generation and high wear. The life of the joint has a certain effect. When we choose a rotary joint, evaluate the zuida speed of our equipment and then select the appropriate rotary joint based on the evaluation value.