The Haas ST-35Y is a large-bore CNC turning center with live tooling and Y-axis capability that has earned a reputation for production versatility across job shops and industrial manufacturers running complex turned-part programs. This 2016 machine is built around a 40 HP, 3,200 RPM main spindle in a 12" A2-8 chuck, offering a maximum turning diameter of 18" and Z-axis travel of 32.5" — a working envelope well-suited for large, long components in aerospace, oil and gas, and heavy industrial applications. The Y-axis provides ±2" of offset travel, enabling off-center milling, eccentric boring, and multi-face contouring that would otherwise require a second setup on a machining center, while the 6,000 RPM live tooling spindle with full C-axis control delivers complete mill-turn capability in a single chucking. This unit is equipped with a parts catcher, programmable hydraulic tailstock, CNC control cabinet cooler, rigid tapping, spindle orientation, high intensity lighting, and the Haas Intuitive Programming System.
Compared to the standard Haas ST-35 — the same bed and spindle platform without the Y-axis option — the ST-35Y represents a meaningful step up in part-complexity capability at the same floor footprint. The ST-35 is a proven production lathe that shares an identical 40 HP spindle, 18" max swing, and 32.5" Z-travel, but its live tooling is confined to on-center axial and radial positions, restricting it to straight cross-drilling and on-axis face features without the ability to offset laterally. The ST-35Y's ±2" Y-axis removes that constraint, opening the door to off-center milling, keyway cutting, and eccentric pocket work entirely at the lathe — collapsing what would otherwise be a two-machine cycle into a single chucking and eliminating the fixturing, handling, and re-datum time associated with a VMC second op. For shops running complex turned components, that difference in capability translates directly to lower cycle times, fewer operator touchpoints, and more competitive pricing on jobs that previously required two machines to complete.