AMERICAN TURNMASTER AT-1550-G-TW MANUAL LATHE

Technical Description

The AMERICAN TURNMASTER AT-1550-G-TW is a precision manual engine lathe featuring a 15.2-inch swing over the bed and 9.4 inches swing over the cross slide, with a substantial distance between centers of 50 inches. It is equipped with a geared headstock allowing 16 spindle speeds ranging from 25 to 2,000 RPM, driven by a robust 7.5 HP, 220/440V 3-phase motor ensuring constant horsepower across the speed range. The spindle bore measures 2.2 inches with a D1-6 spindle nose, facilitating the machining of larger workpieces and accommodating versatile tooling options. The lathe’s bed is hardened, ground, and Turcite-coated on the anti-friction sliding surfaces, supported by a 3 V-way design, enhancing precision, durability, and smooth operation. The machine uses a Colchester-type clutch headstock with a forward-reverse disc clutch, allowing reliable control over spindle engagement. Threading capabilities include both inch (2-72 TPI) and metric (0.2-14 mm) ranges, with manual operation and no CNC control. Additional features include a cam-lock spindle for quick tool changes, pressure lubrication system for sustained performance, and an adjustable double-wall apron with enclosed drive for accurate feed control. The tailstock has a #4 Morse taper. Standard accessories often include dead centers, backplate, foot brake, and tool post, with options for various chucks and attachments. This lathe is well-suited for precision high-speed turning, toolroom, and general-purpose machining applications where manual control and high finish quality are required.