DSU Miniguides in both standard and wide models are made from corrosion ressistant stainless steel. They offer a extremely low friction resistance, accurate linear motion and long term trouble free operation. The ball grooves in the rail and the carriage are ground very precisely which result in an unexcelled high running accuracy and smoothness. DSU miniguides are supplied with a light amount of preload ~0.02.Cdyn (V1) which increases the stiffness and offers a long operation lifetime.