2018 Doosan DNM-750L II CNC Vertical Machining Center

The Doosan DNM-750L II is a long-bed vertical machining center with a reputation for rigid, dependable performance that has made it a go-to platform in aerospace, energy, and heavy-parts job shops. This 2018 unit is equipped with travels of 85 inches in X, 30 inches in Y, and 25.6 inches in Z, paired with an 85-by-29.9-inch table rated for 3,968 pounds. Power comes from a 21-HP CAT40 BIG PLUS spindle turning at 12,000 RPM, fed by a 30-position arm-type automatic tool changer. The FANUC i Series CNC control provides proven conversational and program-based operation, while the factory thru-spindle coolant system keeps tools cool during deep-cavity and long-reach cuts. Additional equipment includes a Chick subplate with quick release system and an LNS chip conveyor for continuous chip evacuation.

The DNM-750L II builds on the foundation of the original Doosan DNM-750L with meaningful engineering improvements that directly affect shop-floor output. Doosan upgraded the servo drive system for faster axis response and improved contouring accuracy, refined the spindle thermal compensation for tighter tolerance holding over extended run times, and added the BIG PLUS dual-contact spindle interface for superior rigidity at high speeds. The result is a machine that holds size better over longer cuts, indexes tools faster, and runs more confidently in lights-out scenarios — all advantages the first-generation 750L could not match. For shops stepping up from the original DNM-750L or looking to add large-envelope vertical capacity at a used price, the DNM-750L II represents a genuine production upgrade.