J&M TN660 MANUAL LATHES

Technical Description

The J&M TN660 Manual Lathe features a maximum swing of 25.98 inches (660 mm) over the bed, providing substantial capacity for machining larger workpieces. It is equipped with a spindle bore diameter of 4.13 inches (105 mm), allowing for the accommodation of sizeable bar stock or blanks through the spindle. The lathe bed width is 405 mm, ensuring rigidity and stability during heavy-duty turning operations. The machine offers a distance between centers ranging from 1000 mm to 3000 mm, catering to various workpiece length requirements. Its spindle incorporates a D8 spindle nose with a taper bore typically conforming to M.T. 7, facilitating compatibility with standard tooling and holding devices. The spindle speed is manually variable across multiple steps, encompassing a broad rpm range suitable for different material types and cutting conditions. The lathe is designed for precise and versatile manual turning tasks, including facing, threading, and taper turning, supported by a robust construction that minimizes vibration for enhanced surface finish and dimensional accuracy. Optional features may include an effective gap length of 230 mm, a four- or six-way tool post compatible with 32 x 32 mm tooling, and a tailstock with a quill taper of M.T. No.5 and 150 mm travel. Powered by motors up to 11 kW, the TN660 balances power, size, and precision for demanding workshop environments requiring reliable manual lathe operation.