Technical Description
The Summit 24-4 x 120 is a precision manual engine lathe constructed entirely from cast iron, engineered for durability and consistent performance under demanding work conditions. With a 25-inch swing over bed and 120-inch distance between centers, this machine accommodates substantial workpieces for extended turning operations. The spindle features a large 4.125-inch bore, precision chrome alloy construction, and delivers 1,250 RPM maximum speed across 21 variable steps, providing flexibility for diverse machining applications. The 15 horsepower main drive motor powers the quick-change gearbox, which seamlessly cuts American inch threads, metric threads, module, and diametrical pitch threads without requiring change gears. The lathe incorporates a clutched headstock for enhanced precision control and long-lasting reliability, while hardened and ground alloy steel gears, shafts, and splines ensure sustained accuracy. Standard features include anti-friction mounted shafts with dynamically balanced components, rapid 4-way joystick traverse on the carriage, and a two-speed tailstock for expedited setups. The cross-ribbed headstock design provides exceptional strength and stability, complemented by hardened and precision-ground bedways that minimize vibration and maintain rigidity. Included accessories encompass a 3-jaw chuck, thread dial, standard and extra-capacity steady rests, follow rest, taper attachment, coolant system, and full-length splash guard. Weighing 9,000 pounds with dimensions of 194 x 48 x 67 inches, this machine represents a substantial capital investment built to deliver reliable production capability.
