CNC Machining Centers & Lathes

Used Mazak QTN-350: Sell or Buy at Auction

Mazak is one of the world's largest and most respected machine tool manufacturers: known for advanced multi-tasking machines, high-speed machining centers, and the Mazatrol conversational control system. Mazak machines are a mainstay of aerospace, automotive, and precision manufacturing environments globally.

The Mazak Quick Turn Nexus 350 is the large-capacity member of Mazak's Quick Turn Nexus lathe family, a horizontal CNC turning center built for heavy roughing and precision finishing of large-diameter shafts, flanges, and housings. It runs Mazak's Mazatrol conversational control alongside standard EIA/ISO G-code, and it pairs a rigid cast bed with a strong integral spindle so it can hog through large stock without chatter. Where the Quick Turn Nexus 200 and 250 handle smaller work, the 350 steps up to a 12-inch chuck, bar capacity in the 3 to 4 inch range, and a spindle in the 30 to 40 horsepower class running up to roughly 3,300 rpm. Many QTN-350s on the used market also carry live tooling, a C-axis, and a Y-axis in the M, MY, and MSY configurations, so a single machine can turn and mill large components in one setup. Shops turning big-diameter parts, oil and gas fittings, heavy equipment shafts, power generation hardware, and large aerospace forgings reach for this CNC lathe over Mazak's smaller Quick Turn models, valuing the bed rigidity and spindle torque that a 12-inch chuck demands. At auction, a QTN-350 draws strong interest from job shops scaling up capacity and from the active international market for used Mazak equipment, where the brand's global parts and service support helps hold resale value. KD Auctions markets each QTN-350 listing to its network of 500,000+ industry contacts, pairing that reach with photos, run-off video, and control screenshots so bidders can evaluate spindle hours, axis configuration, and tooling condition before sale day.

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