SUMMIT 20X80 MANUAL LATHES

Technical Description

The Summit 20X80 is a precision manual engine lathe engineered for versatile machining applications in toolroom and production environments. This robust machine features a 20-inch swing over ways with an extended 28-inch swing capacity in the removable gap bed, accommodating larger workpieces while maintaining the ability to work over the cross slide at 12 inches. The lathe is equipped with a 12-inch three-jaw chuck and accommodates workpieces up to 84 inches between centers, making it suitable for extended turning operations. Driven by a 10 HP motor, the spindle delivers 18 speed variations ranging from 11.5 to 1400 RPM, enabling optimization for diverse material and tool configurations. The machine offers comprehensive threading capabilities, including 64 English thread pitches from 1/4 to 60 TPI and 64 metric thread options from 0.5 to 120 mm, allowing production of both standard and precision threads without change gears. Longitudinal feeds span 124 positions from 0.00145 to 0.44474 inches per revolution, providing fine control for detailed work. A four-way rapid traverse system delivers 150 IPM, significantly reducing non-cutting time between operations. The 4-1/16-inch diameter spindle hole accommodates various tooling options. Standard equipment includes a thread dial, taper attachment for angular cuts, two roller-type steady rests for workpiece support, and a follow rest for precision turning. An integrated coolant system with chip guards ensures optimal tool life and workpiece finish. This machine represents a capable platform for general machining, thread cutting, and precision turning operations.