HAAS AUTOMATION, INC. ST-55 HORIZONTAL MACHINING CENTER

The HAAS AUTOMATION, INC. ST-55 Horizontal Machining Center is a high-performance CNC lathe engineered for heavy-duty turning of large-diameter and long workpieces. It features a main spindle with a maximum turning diameter of 25.500 inches and a maximum turning length of 80.000 inches, accommodating substantial workpiece sizes. The 18.000-inch chuck diameter and 34.500-inch max swing provide robust workholding capacity, while the 12.500-inch maximum bar diameter supports extended bar feeding operations. The single main spindle delivers 55 horsepower and operates at up to 1,000 RPM, ensuring efficient material removal and precision for demanding applications. Equipped with a turret-style primary tool carrier, the machine supports up to 12 turning tools, with a rotary tool capability of 6,000 RPM for enhanced versatility. The ST-55 offers two-axis control, with X-axis travel of 17.000 inches and Z-axis travel of 80.000 inches, enabling precise machining across a broad range. Rapid traverse rates of 710 inches per minute on both X and Z axes maximize productivity by reducing non-cutting time. Designed for simultaneous single-tool cutting, the ST-55 balances speed and accuracy for high-volume production environments. This machining center is ideal for shops requiring reliable, large-capacity turning performance with advanced CNC control and tooling flexibility.