2023 Haas ST-20Y CNC Turning Center

The Haas ST-20Y is a Y-axis CNC turning center with live tooling, built on the high-performance Haas ST platform with a reputation for value and everyday reliability in job shops and production environments. This 2023 example pairs an 8.3 in hydraulic 3-jaw chuck, a 2.5 in bar capacity, and a 3.5 in spindle bore on an A2-6 spindle nose with a 20 HP, 4000 RPM main spindle, handling parts up to 11.75 in in diameter and 22.5 in in length. It adds a true +/-2 in Y-axis, full C-axis, and 4000 RPM live tooling through a 12-station turret, all under the intuitive Haas CNC control - so milling, drilling, and tapping off centerline happen in a single setup.

Compared to the standard ST-20 it builds on, the ST-20Y is a meaningfully more capable machine, not just a turning lathe. Where the standard ST-20 cuts on the X and Z axes only, the ST-20Y adds a programmable Y-axis, C-axis positioning, and driven live tools, letting a shop mill flats, drill cross-holes, and cut keyways without moving the part to a separate machining center. For a shop consolidating turning and light milling into one spindle, the near-new ST-20Y delivers true multi-axis capability and modern Haas control at a used-machine price.