... cast iron to ensure maximum rigidity, maximum precision milling, with ball rail guide of the NC with the drive to ensure ... of hiwin linear- Imported from Taiwan OEM PMI double nut ball screw Intime - Safety electrical components of high quality and fast plug ... .0Nm - Z axis servo motor: 4.0Nm - PMI double nut ball screw - USB, RS232 Interface: data transfer - Standard 15-pin parallel port ...