Linear bearings are linear motion systems that work with shafts to perform wireless linear motion. Since there is point contact between the ball and the shaft, the friction is small and the precision is high. The ball moves linearly along the axis in the integral cage. The material is high-carbon chromium bearing steel, and the inner and outer diameters are ground after heat treatment. Application of linear bearings Linear bearings are used in computers and their peripheral machines, various measuring instruments, automatic recorders, three-dimensional measuring devices and other precision equipment. They are also widely used in multi-axis iron beds, punching machines, tool grinders, automatic gas cutting machines, printers, card sorting machines, and food packaging machines.