... GS spindle High precision ball screw for X,Y,Z Hiwin linear rails Aluminum and PVC working table NO.DescriptionParameter1X, Y, Z ... ± 0.03/300mm4Repeatability± 0.02mm5Lathe structureCast steel6X structureBall screw, shaft rails 7Y structureBall screw, linear rails8Z structureBall screw, shaft rails9Max. consume ...