KNUTH DL E620/3000 MANUAL LATHE

Technical Description

The KNUTH DL E 620/3000 is a heavy-duty universal manual lathe designed for machining large, heavy workpieces up to 118 inches (3000 mm) in length and 49 inches (1250 mm) in diameter over the bed, with a 35-inch (900 mm) turning diameter over the cross slide. It features a robust 30-inch wide cast-iron bed with hardened and ground ways to minimize vibrations and ensure precision. The lathe accommodates workpieces weighing up to 13,200 pounds (approximately 6,000 kg) between centers and up to 3,300 pounds on the chuck, which is a large 39.5-inch 4-jaw face plate. The spindle has a 5.1-inch bore and supports spindle speeds ranging from 3.15 to 315 RPM on the right side (21 speeds) and 4 to 315 RPM on the left (12 speeds), driven by a powerful 29.5 HP (22 kW) motor. Feed rates for the X-axis vary from 0.00252 to 0.47244 inches per revolution, while Z-axis feed rates range from 0.00126 to 0.23622 inches per revolution. The lathe features rapid traverse rates of 73.62 inches per minute on the X-axis and 147.24 inches per minute on the Z-axis, enhancing productivity. Additional capabilities include three-axis digital readout (DRO) for precise position monitoring, a tailstock with a 6-inch diameter quill and 12-inch stroke with ±0.1-inch traverse adjustment, and a top slide with ±180 degrees swing. The machine’s dimensions are approximately 241 inches long by 76 inches wide and high, weighing around 28,000 pounds. It includes standard equipment such as central lubrication, coolant system, steady and follow rests, and various tooling accessories to optimize heavy-duty conventional turning operations.