The development of modern industrial robots tends to be lightweight, and bearings must be installed in limited space with small volume and light weight. Thin walled bearings are widely used in robots. As one of the key components of industrial robots, industrial robot bearings are suitable for the joint or rotating parts of industrial robots, as well as the rotating parts of robotic arms. Using thin-walled bearings with equal cross-sections can save space, reduce weight, significantly reduce friction, and provide good rotational accuracy. Make the lightweight and miniaturization of the host possible