The JET GH-2680ZH is a heavy-duty geared head engine lathe engineered for high-output production machining operations. This machine features a substantial 26-inch swing capacity with an extended 79.9-inch distance between centers, enabling the machining of elongated workpieces with precision. The lathe accommodates a large 4.13-inch spindle bore with a D1-8 spindle mount, providing exceptional versatility for various tooling configurations and larger diameter workpiece handling. Powered by a robust 10.1 HP motor, the machine delivers variable spindle speeds ranging up to 1,600 RPM with 12 selectable speed options, allowing operators to optimize cutting parameters across diverse material types and applications. The universal gearbox system enables the lathe to turn 89 different thread sizes while supporting inch, metric, diametral, and module threading capabilities. The 16.5-inch swing over the cross slide facilitates efficient workpiece accessibility and tool positioning. The machine incorporates a clutch-operated headstock with hardened and ground gears, ensuring durability and precision during continuous production runs. Induction-hardened bed ways provide excellent rigidity and wear resistance for extended service life. With 65 programmable longitudinal and cross feed rates, this lathe delivers exceptional flexibility for complex machining operations. Weighing 8,514 pounds and measuring 138 inches in length, 43 inches in width, and 57 inches in height, the GH-2680ZH represents a substantial industrial machine tool suitable for tool rooms, small job shops, and production facilities requiring precision threading and turning capabilities on larger components.