Used Haas ST Series CNC Lathes for Sale 101

Haas ST series and CNC lathe positioning

The ST series replaced the earlier Haas SL line and brought CNC turning into a price band accessible to mid-size European subcontractors, automotive suppliers, fittings manufacturers, and bar-fed production environments. The platform competes with equivalent Doosan Puma, Hyundai-Wia, and Hwacheon offerings in the small and mid-size CNC lathe segment.

ST-10, ST-20, ST-30, ST-40 sub-models

The ST-10 is the entry point with an 8-inch chuck and bar capacity around 44 millimetres, addressing small turned parts, fittings, and short shaft work. The ST-20 stretches the bar capacity to around 51 millimetres for fittings and small shaft work, with optional Big Bore configurations for larger bar capacities. The ST-30 sits at the heart of the range with a 10-inch chuck, substantial spindle power, and configurations spanning the bulk of European subcontracting work. The ST-40 carries a 15-inch chuck for larger turned parts including hydraulic and oilfield components.

ST configurations and live tooling

ST configurations vary considerably across the installed base. Base ST machines are two-axis turning centres with a 12-station turret. Higher specifications add live tooling for milling and drilling on the part, a Y-axis for off-centre operations (designated by the Y suffix), a sub spindle for second-operation work without re-fixturing (DS suffix on the ST-DS variants), and bar feeders coupled through the spindle bore. Each option significantly expands the scope of parts the lathe can produce in a single setup, and each adds meaningfully to the second-hand value.

Control generations

ST machines have shipped under both Haas Classic Control and Next Generation Control generations. The Next Generation Control with the Visual Programming System makes shop-floor adaptation easier, which is a meaningful factor for buyers transitioning from older Fanuc-controlled lathes or moving operators between Haas mills and lathes within the same shop.

Used Haas ST value drivers

Used Haas ST lathes benefit from continuing parts availability through Haas's European service network, common tooling and bar feeder interfaces, and the wide operator pool familiar with the Haas control environment. ST listings come predominantly from production subcontractors and automotive parts manufacturers cycling capacity.

Browse used Haas ST series CNC lathes on Exapro to compare ST-10 through ST-40 configurations across pure turning, live-tooling, Y-axis, and sub spindle variants from verified sellers worldwide. When evaluating a used ST lathe, verify spindle hours from the Haas control, check spindle bearing condition through radial play measurement, inspect turret indexing repeatability and clamping pressure, test live tool drives where present, confirm sub spindle alignment on DS variants, and verify bar feeder compatibility against actual spindle bore diameter. The included tooling, soft jaws, hard jaws, steady rests, and bar feeder accessories are a meaningful part of the deal economics and should be itemised explicitly on any listing.