USED HAAS ST55

The Haas ST-55 is a large-frame CNC turning center built for heavy-duty machining, large parts, and demanding production environments. As part of Haas Automation’s ST Series — a platform known worldwide for strength, stability, and ease of use — the ST-55 combines a premium mechanical design with a flexible control system. Its substantial cast iron base and precision guideways ensure rigidity and vibration resistance, enabling consistent accuracy and excellent surface finish even under heavy cutting loads.

The ST-55’s generous work envelope makes it suitable for machining large housings, long shafts, sleeves, flanges, and other industrial parts that require significant material removal and high tolerance control. Suitable industries include automotive, aerospace, energy generation, oil & gas, industrial machinery, and contract manufacturing. The machine is built to handle deep turning, threading, grooving, boring, and other conventional lathe operations with stability and repeatability.

Equipped with Haas CNC control, the ST-55 offers intuitive conversational programming, full G-code compatibility, USB and Ethernet connectivity, adjustable feeds and speeds, and comprehensive tool management features. Optional accessories like chip conveyors, high-pressure coolant systems, probing packages, live tooling, and automation interfaces further expand capability. Whether integrated into high-volume production cells or used in mixed-model job shops, the ST-55 delivers a powerful combination of capacity, reliability, and ease of operation.

HAAS ST55 SPECIFICATIONS

WHY BUY USED HAAS ST55

Purchasing a used Haas ST-55 is a smart investment for manufacturers that need large-scale turning capability without the premium cost of a new machine. Like most CNC equipment, the steepest depreciation happens in the first several years, so a well-maintained used ST-55 can often be acquired at a significant reduction relative to new pricing while still offering robust performance and many years of productive life.

The ST-55 is built with heavy cast iron construction, precision guideways, and a high-torque spindle — mechanical elements that stand up well to long service when properly maintained. Because Haas is one of the most widely adopted CNC brands globally, used machines benefit from extensive access to parts, tooling, and technical expertise. Operator familiarity with Haas versus other control brands also reduces training time and accelerates integration into existing workflows.

Another advantage of buying used is flexibility: shops can choose to purchase a machine with basic functionality and then upgrade with optional accessories like chip conveyors, high-pressure coolant, live tooling, or probing packages as budgets allow. Used ST-55 machines can also be integrated with automation such as bar feeders or robotic loaders to support extended cycle times or lights-out production. For job shops, contract manufacturers, and high-mix production environments, a used ST-55 often represents excellent value, stability, and long-term ROI.

HOW MUCH DOES A USED HAAS ST55 COST?

The price of a used Haas ST-55 varies depending on machine age, hours, condition, configuration, and included options, but typical market ranges help buyers plan budgets and negotiate effectively. Because the ST-55 is a larger and more capable turning center compared to smaller models like the ST-40 or ST-45, its used pricing generally sits at a higher range.

Older used ST-55 machines with higher spindle hours and basic configurations (without many optional accessories) often list in the $60,000 to $100,000 USD range. These machines can still deliver substantial turning capacity for large components and are good options for shops willing to invest in tooling or minor refurbishing.

Mid-range used ST-55 machines — typically under 10–12 years old with moderate hours, clean mechanical condition, and desirable options like chip conveyors, high-pressure coolant systems, and updated Haas CNC controls — commonly trade between $100,000 and $150,000 USD. These units often represent excellent value, with strong production-ready capability and minimal required upgrades.

Late-model, low-hour ST-55 machines equipped with advanced productivity options — such as live tooling, probing systems, bar feeders, or automation packages — can command $150,000 to $200,000+ USD in markets with strong manufacturing demand. Regional differences also influence values: North America and Western Europe tend to exhibit higher used prices due to stronger industrial activity. Buyers should also consider transport, rigging, installation, and tooling when assessing total investment.