Linear guide is a device designed to facilitate linear motion along a predetermined path. It consists of two main components: the rail and the carriage. The rail is a long, straight track, typically made of hardened steel, that serves as the guiding surface. It features a precision profile, such as a V-shaped groove, to minimize friction and ensure consistent motion along the rail's length. The carriage, also known as the slide or slider, is a specialized component that runs along the rail and houses the load to be moved.