South Bend 1640 Engine Lathe, 16" x 40", 2.25" Spindle Bore, Newall DRO

The South Bend 1640 is a heavy-duty engine lathe designed for precision toolroom and maintenance operations. This model features a 16-inch swing over the bed and a 40-inch distance between centers, providing ample capacity for medium to large-scale workpieces. The headstock is equipped with a 2.25-inch spindle bore and a D1-6 camlock spindle nose, supporting spindle speeds ranging from 30 to 980 RPM via a back-geared eight-speed drive system. The machine’s carriage includes a wide bridge with power longitudinal and cross feeds, managed through a double-wall apron with steel gears and a multiple-disc friction clutch. A quick-change gear box allows for 48 threading pitches ranging from 4 to 224 TPI and longitudinal feeds from 0.0015 to 0.0841 inches per revolution. Additional technical specifications include a 10.5-inch cross slide travel, a No. 3 Morse taper tailstock with 5.75 inches of spindle travel, and a 2-axis Newall Digital Readout (DRO) for enhanced positioning accuracy. Built on a rigid, semi-steel bed with three V-ways and one flat way, the lathe is typically powered by a 1.5 to 2 HP motor configured for 460V operation. The unit occupies a footprint of approximately 8ft x 4ft x 5ft and has a shipping weight of approximately 3,000 to 4,000 lbs.