The linear smooth rod and the linear guide are similar in function, both support and guidance. The main difference lies in the installation part, and the shape is different. The smooth rod is circular, and the linear guide is generally square and has a fixed mounting slider. Part. The linear smooth rod is generally fixed at both ends, and the intermediate suspended connecting member encloses all or most of the radial direction of the smooth rod. Linear guides generally have one side that fits snugly against the equipment mounting base for easy attachment.