JOHNFORD - ROUNDTOP MACHINERY COMPANY ST-40(60, 70)B HORIZONTAL MACHINING CENTER

The JOHNFORD ST-40(60, 70)B Horizontal Machining Center is engineered for high-efficiency turning and milling operations, featuring a robust single main spindle with a maximum turning diameter of 23.62 inches and a turning length of 72.83 inches, accommodating large workpieces. The main spindle chuck diameter measures 15 inches, with a maximum swing of 31.1 inches and a bar diameter capacity of 4.57 inches, ensuring versatility for a wide range of part sizes. The spindle operates at up to 1,700 RPM and delivers 50 HP for powerful material removal. The machine is equipped with a turret-style primary tool carrier, supporting up to 12 turning tools and 12 rotary tools, with the rotary tool providing 5 HP and reaching 4,000 RPM for live tooling applications. Designed for simultaneous cutting, the ST-40(60, 70)B allows one tool to cut at a time, optimizing precision and control. The machine features two axes of motion, with X-axis travel of 13.39 inches and Z-axis travel of 35.43 inches, enabling precise positioning and deep cuts. All axes offer rapid traverse rates of 590 inches per minute, ensuring fast cycle times and high productivity. The ST-40(60, 70)B is ideal for complex, high-volume machining tasks, combining heavy-duty construction with advanced tooling capabilities for reliable performance in demanding production environments.