WILLIS SK2680 MANUAL LATHE

Technical Description

The Willis SK-2680 is a precision geared-head engine lathe designed for heavy-duty industrial applications requiring robust construction and reliable performance. This manual lathe features a 26-inch swing over bed with an 80-inch distance between centers, enabling machining of substantial workpieces. The machine accommodates a maximum swing of 37 inches in the gap configuration, providing versatility for specialized turning operations. Equipped with a 4-inch spindle bore and ASA A2-8 spindle nose with MT#5 taper, the lathe delivers spindle speeds ranging from 20 to 1,200 RPM across 12 selectable steps. The 15-horsepower main motor provides adequate power for demanding machining tasks. Cross-slide travel extends 14.375 inches, while the compound rest offers 9 inches of travel for precision angle work. The 3-inch quill diameter tailstock features 7 inches of travel with MT#5 taper compatibility. Longitudinal feeds range from 0.0002 to 0.016 inches per revolution, and cross feeds from 0.0001 to 0.008 inches per revolution, supporting precision thread cutting from 2 to 28 TPI in inch threads and 0.8 to 14mm in metric. The lathe weighs approximately 5,621 pounds and measures 140 by 42.5 by 66 inches in height. Standard equipment includes steady rest, coolant pump, back plate, and center sleeve, making it suitable for diverse production environments including oil field, shipbuilding, and manufacturing operations.