CNC Vertical Machining Center VMC-855L

The VMC-855L is a cnc vertical machining centre tuned for heavy, stable cutting in a compact envelope. Its defining feature is a reinforced eight-point-support, extra-large-span base that, after scraping treatment, mates with HT300 castings and a herringbone column to form a low-flexure platform. The high-rigidity spindle couples with a precision transmission train so that tool-tip deflection under heavy cuts stays inside 0.01 mm positioning and +/-0.003 mm repeat accuracy even during 24/7 running. The BT40 spindle reaches 10,000 rpm through a timing belt and draws 11 kW, the three axes travel at 48 m/min rapid traverse, and a 24-tool disc magazine completes tool changes in 2.5 seconds. Cutting feed covers 1-10,000 mm/min, air supply is 6-6.5 kg/cm2 and required power is 25 kVA. On an 800/550/550 mm X/Y/Z travel over a 1,000 x 550 mm table rated at 500 kg, the machine weighs 6,000 kg and carries the thermal and vibration damping needed for sustained roughing and semi-finishing of castings and steel in production lines, with the scraped casting mating surfaces ensuring long-term datum retention under continuous load.

For buyers running automotive component lines, the VMC-855L's value is not a one-off accuracy number but repeatability across a shift. Our batch production discipline - SOP process control, multi-point in-process inspection and full traceability - together with production consistency verified on Renishaw laser interferometer and Hexagon CMM, means each machine shipped holds the same datum build, so customers can plan unmanned second shifts and supplier audits without re-qualifying fixtures every quarter. Because casting roughing and finishing are split across ordinary and high-precision machines in our own shop, the base and column arrive at assembly already stress-relieved and geometrically matched, which is what holds the 0.01 mm / +/-0.003 mm envelope over years of 24/7 work.

The eight-point extra-large-span base absorbs the asymmetric loads of milling cast-iron engine blocks and gearbox housings, keeping the spindle upright under interrupted cuts so bore and face-mill datums stay aligned across batches.

With 24/7 continuous-operation stability and a 2.5 s tool change, the machine runs multi-process milling, drilling and tapping cycles on steel brackets without fixture re-setting, raising OEE on medium-volume automotive runs.

The rigid BT40 spindle and scraped casting joints hold tolerance on brake caliper carriers and steering knuckle semi-finishing, where vibration from roughing would otherwise ruin the mating surfaces.