J&M TN1250F MANUAL LATHE

Technical Description

The J&M TN1250F Manual Lathe is a robust and precision-engineered engine lathe designed for heavy-duty turning applications. With a swing over bed of 49.21 inches (1250 mm) and a swing over cross slide of 37.01 inches (940 mm), this lathe provides ample capacity for large workpieces, making it ideal for demanding industrial environments. The spindle features a generous bore diameter of 3.94 inches (100 mm), allowing for the passage of long bar stock and facilitating versatile machining operations. The lathe is equipped with a metric spindle taper (Φ120 1:20), ensuring compatibility with a wide range of tooling and accessories. It offers 18 steps of spindle speed, with a range typically between 6-800 rpm, providing flexibility for various materials and cutting requirements. The machine’s rigid construction includes a hardened and precision-ground V-way bed, ensuring long-term accuracy and durability. The cross and longitudinal feeds are finely adjustable, with ranges of 0.05-12.5 mm/r and 0.1-24.3 mm/r respectively, supporting precise control during machining. The tailstock quill has a travel of 250 mm and a diameter of 100 mm, with a MT5 taper for secure tool holding. The main drive is powered by an 11 kW motor, delivering strong and consistent performance. Additional features include a rapid feed system, a 32x25 mm tool section, and a top slide travel of 200 mm. The TN1250F is supplied with a 3-jaw chuck (400 mm) for swing over bed greater than 800 mm, as well as a 4-jaw chuck and drive plate for enhanced workholding options. This lathe is engineered for reliability, precision, and versatility in heavy-duty turning tasks.