HIR Roller Ways require only a small design envelope, have high load carrying capacity and are characterised by low, uniform friction and high accuracy throughout their operating life. In a preloaded design, the guidance systems can achieve extremely high rigidity. Since the high accuracy roller is built into the highly flat surface way finished by accurate ground, the product has a high rigidity and high accuracy. Also because the variation of operation height can be selected in the unit of 2 μm, the load can be evenly distributed even in the multiple-use environment. The structure of all models lets the roller to be guided accurately without creating skew, yielding an extremely stable and smooth linear motion.