J&M TL1240S MANUAL LATHE

Technical Description

The J&M TL1240S Manual Lathe is a heavy-duty engine lathe designed for demanding turning applications, offering robust construction and high precision. With a maximum swing over bed of 57.5 inches (1460 mm) and a swing over cross slide of 37.8 inches (960 mm), this lathe accommodates large workpieces, supporting a maximum weight of up to 20 metric tons. The spindle features a generous bore diameter of 4.1 inches (105 mm) and a taper of Φ140 mm at 1:7, ensuring compatibility with a wide range of tooling and workholding accessories. Spindle speeds range from 3 to 200 rpm, delivered through a hydraumatic 4-step gearbox (3–24; 6–48; 12–96; 24–200 rpm), allowing for optimal speed selection across diverse materials and operations. The lathe supports both metric and inch thread cutting, with metric thread pitches from 1 to 60 mm and inch threads ranging from 1/2 to 30 T.P.I. Longitudinal feed ranges from 0.1 to 6 mm/rev, while cross feed ranges from 0.05 to 3 mm/rev, providing fine control for precision turning. Rapid traverse rates are 3000 mm/min longitudinally and 1500 mm/min crosswise, enhancing productivity. The tool section is 45 x 45 mm, supporting heavy-duty tooling. The lathe bed is 1180 mm wide with a square bedway design for superior rigidity and accuracy. The cross slide travel is 700 mm, and the center distance is configurable from 2 to 12 meters. The machine’s surface finish capability reaches up to 3.2 μm, with dimensional accuracy up to IT7, making it suitable for high-precision industrial applications.