Machine Characteristics Unique one-piece casting column with double ribs design. Box type structure deisng for spindle unit, providing high rigidity, reducing thermal growth, and ensuring positioning accuracy. X and Y axes ball screw with build-in oil cooling system. Saddle supported by 3 roller linear guides, providing an increase of 25% in cutting capacity. Y axis guideways are mounted on the top of cross rail to shorten the distance from spindle head to Y axis slideway.