They are used whenever there is a need to slide an object or to increase the profitability of a process or machine by automating it. CTS offers various items: simple linear guides , which are the basis of its product range, can evolve into motorized linear guides with 1, 2 or 3 axes. Movement can be achieved with a toothed belt , straight or helical toothed rack , chain , trapezoidal screw and recirculating screw . A wide choice of standard carriages is available or they can be built to design according to the different needs of customers. Simple components can also be supplied to integrate them into an existing linear guide solution. Linear guides with rollers work dry , do not need to be periodically lubricated, they are therefore particularly suitable for dusty environments , in areas where constant maintenance is difficult, and above all where it is important not to pollute the final product such as in the textile, paper and food sectors. The track is made of an aluminum profile with two hardened, ground and chrome-plated steel bars inserted on both sides. The version with AISI420 stainless steel bars and wheels is also available and protection can be made with heat-welded flat bellows . The working temperature depends on the type of lubricant used and the polymer cage mounted inside the ball wheels, the range is -20°C +80°C . There are no standard lengths of the rails, they can be supplied from 100 mm up to 6 m in a single piece, for greater lengths special joints can be made.