The unique structure called Dual X allows for smooth movement even when the load is applied horizontally or vertically. The rail is for medium load, designed to withstand an operating load of up to 300 N in either a horizontal or vertical direction. Can be used with a motor drive. Moves smoothly even when moment load occurs. The guide block is a preloaded type with minimal backlash. Grease is applied to the rail. When applying additional grease, use lithium soap grease.