Used Haas ST Series for Sale

MMI Used Haas ST Series Inventory

MMI offers a wide range of used Haas ST Series machines, including popular models such as the ST-10, ST-15, ST-20, ST-25, ST-30, and larger production-focused ST turning centers. The Haas ST Series has become one of the most recognized CNC lathe platforms in the industry due to its rigidity, fast spindle acceleration, and ease of operation on the shop floor.

From compact job shops to high-volume production facilities, used Haas ST machines are widely used for precision turning applications across aerospace, automotive, medical, tooling, and general manufacturing industries. With a large selection of Haas ST machines available on the market, finding the right turning center configuration for your production requirements has never been easier.

CNC Turning Centers

The Haas ST Series lineup consists of versatile CNC turning centers designed to support a wide range of machining operations with precision and consistency. These CNC lathes are capable of handling turning, boring, threading, grooving, and rigid tapping applications across various material types.

The ST Series includes compact machines for smaller-diameter work, mid-size models built for general job shop production, and larger-frame machines designed for extended turning length and larger part diameters. Many Haas ST machines can also be configured with live tooling, sub-spindles, bar feeders, tailstocks, and chip management options for continuous production runs.

For years, the Haas ST Series has remained one of the most trusted CNC lathe platforms in the industry due to its operator-friendly Haas Control, dependable spindle performance, and strong aftermarket support. If you have questions about selecting the right used Haas ST machine, the MMI team is available to help.

Haas ST Series Model Comparison

As of 2026, the Haas ST Series has expanded significantly — beyond the standard ST-10 through ST-40 line-up, Haas has added large-bore, heavy-industry models at the top of the range to compete for oilfield, pipe, and heavy-forging turning work.

Model	Max Capacity (Dia. x Length)	Bore / Bar Capacity	Description
ST-10	12″ x 16″	1.75″ bar	Compact CNC lathe with an extra-small footprint, ideal for smaller shops and precision turning of smaller parts.
ST-15	12″ x 16″	2.5″ bar	Extra-small footprint, big-bore lathe offering a larger bar capacity than the ST-10 in a similar compact frame.
ST-20	13″ x 22.5″	2.5″ bar	Haas's best-selling turning center, offering strong rigidity, bar capacity, and cutting performance for general production.
ST-25	13″ x 22.5″	3.0″ bar	Redesigned for a more compact footprint with superior cutting performance and larger bar capacity than the ST-20.
ST-30	21″ x 26″	3.0″ bar	Mid-size turning center with a generous work envelope, offering strong value for general and mid-volume production.
ST-30L	15″ x 62.5″	3.0″ bar	Long-bed version of the ST-30 with roughly double the Z-axis travel, built for longer shafts and parts.
ST-35	21″ x 26″	4.0″ bar	Mid-size, big-bore lathe with a larger drawtube bore than the ST-30, for larger-diameter bar work.
ST-40	30″ x 44″	4.0″ bar	Large-frame turning center with increased max turning diameter (30″) and part swing (35.5″), built for large-part production.
ST-45	30″ x 44″	7.0″ bore	Updated large-bore lathe with more capacity and performance than the previous-gen model, in a smaller footprint.
ST-50 (newer/large-bore)	25.5″ x 80″	8.5″ bore	Heavy-duty lathe with a 2-speed gearbox and front/rear A2-15 spindle noses, built for pipe, large-diameter stock, and heavy forgings.
ST-55 (newer, top of line)	25.5″ x 80″	12.5″ bore	Haas's largest-bore turning center — an oilfield/heavy-industry machine with front and rear A1-20 spindle noses and a 55 hp vector drive.
DS-25Y / DS-30Y (newer, dual-spindle)	Varies	—	Dual-spindle, Y-axis "done-in-one" turning centers with synchronized opposed spindles and on-the-fly part pass-off via a 12-station BMT65 turret.

Why Buy a Used Haas ST Series

The Haas ST Series is one of the most trusted lines of CNC turning centers in the industry, known for rigid construction, fast spindle acceleration, and an intuitive Haas Control that's easy to program on the shop floor. Because Haas builds these machines to last well beyond 20,000 hours with proper maintenance, a used ST-series lathe offers job shops, production facilities, and tool rooms enterprise-grade turning capability at a fraction of new-machine cost.

• Lower cost per part than new equipment
• Parts and service widely available (Haas Factory Outlets nationwide)
• Proven reliability across high-volume production
• Easy to finance or lease through MMI
• Faster ROI than buying new