CNC Double Column vertical lathe F series

Machine Material: HT250-HT300 gray cast iron, aged & stress-relieved,high rigidity, minimal deformation

Material Hardness: ≥ HB180; rough machining→secondary aging →finish machining

Manual Scraping: Contact surfaces hand-scraped for low friction & oxide layer; crossbeam with convexity; PTFE soft strips on tool post slideways

Gear & Gear Ring: Forged, quenched, ground gears (40Cr, 45 steel); ground spacers/shim for assembly precision

Spindle&Ram: QT600 ductile (nodular) cast iron

Ball Screw: Domestic brand (NJGR/Hanjiang), ф63 mm

Electrical & Bearings:  Chint electrical with overload protection; HRB/LY-C/C&U bearings