Summary

The Haas ST-55 is an industrial CNC turning center designed for heavy-duty machining of large-diameter and long parts, particularly suited to processing heavy pipes, fittings, couplers, and rollers. Its defining features include a 12.5-inch spindle bore, twin-chuck (front and rear) workholding, and a 2-speed gearbox supporting high-torque operations at low spindle speeds. The machine integrates a programmable servo tailstock and 12-station turret for flexible tool management and extended component support.

Key Capabilities

• Turning operations on large-diameter and long parts
• Twin-chuck capability (front & rear spindles) for machining long workpieces
• High-torque, 55 hp spindle with 2-speed gearbox for heavy cutting
• Programmable servo tailstock (MT6) for enhanced part support
• 12-station bolt-on tool turret, supporting multiple tool configurations
• CNC control with touchscreen, Ethernet/WiFi, advanced tool management, and remote monitoring

Key Specifications