YCM GT-200MA

Live tools are what the YCM GT-200MA adds to the small GT lathe. It has a 12-station radial power turret, a 6" chuck on an A2-5 nose and a 6,000 rpm main spindle, for turned parts up to ø230 mm (ø9.06 in) in diameter and 370 mm (14.57 in) long.

The driven tools turn at up to 4,500 rpm with 2.4 kgf-m of torque. That is enough for cross holes, flats, keyways and small tapped holes, the secondary operations that otherwise send a part to a mill. YCM fits the turret with an extra large 3-piece coupling for milling stiffness and gives the index time between adjacent tools as 0.6 second.

The X axis row shows the difference from the plain lathe. Travel is 177 mm, printed as 115+62, so the slide moves well past the spindle centerline. That over-travel lets a radial live tool reach across the part. Swing over the turret is ø560 mm (ø22.05 in), larger than on the GT-200B, to clear the live tool holders.

Smaller chuck, faster spindle: the machine is set up for bar work and small chucked parts. The draw bar hole is ø45 mm (ø1.77 in) and the spindle bore ø56 mm (ø2.2 in). Motor ratings follow the GT-200B, with 5.5/11 kW in the high range. The slides run on box ways, the tailstock quill is MT-4 with 260 mm (10.24 in) of stroke, and the machine weighs 4,260 kg (9,392 lb).