Hurco TM6i

The Hurco TM6i is the compact turning center of Hurco's TM line: a 170 mm (6.69 in) chuck, 45 mm (1.77 in) bar capacity and a 6,000 rpm spindle rated 13 kW (17.43 hp) and 113.9 Nm (83.99 ft-lb). It turns parts up to 316 mm (12.44 in) in diameter and 340 mm (13.39 in) long, on 176 mm (6.93 in) of X and 356 mm (14.02 in) of Z travel.

Spindle speed is what separates it from the larger TM models. Its 6,000 rpm top speed compares with 4,000 rpm on the TM8i and 3,000 rpm on the TM10i. On small-diameter bar work, surface speed for carbide depends on rpm, so the TM6i keeps cutting speed up on diameters where the bigger machines would run out of revs. The trade is torque: 113.9 Nm (83.99 ft-lb) is about half the 221.5 Nm (163.41 ft-lb) of the TM8i, which limits heavy roughing passes on large steel diameters.

Tooling is sized to match. The 12-station turret takes 20 mm x 20 mm square shanks and boring bars up to 32 mm (1.26 in), against 25 mm x 25 mm shanks and 40 mm (1.57 in) bars on the TM8i. Shops standardised on the larger shank will need a separate set of holders for this machine.

Swing over the bed is 405 mm (15.94 in) and over the cross slide 240 mm (9.45 in), with 402.5 mm (15.85 in) between centers. Both axes rapid at 30 m/min (1,181 ipm). The machine weighs 3,230 kg (7,121 lb), which keeps installation simple compared with the larger TM models. The listed table gives X and Z travel only and no driven-tool speed, so treat it as a 2-axis lathe. It runs Hurco's WinMax control, with conversational and NC programming.