Victor Taichung Vturn-S20/40

The Victor Taichung Vturn-S20/40 is the short-bed 8 in chuck lathe of the box-way S series. Maximum turning length is 420 mm (16.53 in), the spindle is an A2-6 unit at 4,200 rpm with Ø52 mm (Ø2.04 in) bar capacity, and the maker gives the machine width as 2300mm when the chip conveyor discharges to the rear.

That rear conveyor is particular to this model in the series and explains its place in the range. A short machine with nothing sticking out of its side can stand close to its neighbour. Rapid feeds of 20/24 m/min (X/Z) are modest, as expected of box slideways, and the bed is a one-piece 30˚ slant casting.

The table lists a 2 Axis and a C Axis column. Turning diameter is Ø320 mm (Ø12.59 in) at most on the 2 Axis machine and Ø260 mm (Ø10.23 in) with the C axis, while the standard turning diameter moves from Ø230 mm (Ø9.05 in) to Ø250 mm (Ø9.84 in). Both have 12 tools on □25 mm shanks and an M.T. #4 tailstock quill. The C axis comes with a BMT-55 turret according to the maker, and barely changes the weight: 4,500 kg (9,920.78 lb) against 4,560 kg (10,053.06 lb).

A programmable tailstock is standard. On a 420 mm (16.53 in) bed it will mostly support short shafts and long bores, and many buyers will run this machine as a chucker with a bar feeder interface, which is an option.