Standard Single Column D 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