Hurco TMX8i

The Hurco TMX8i is a heavy two-axis turning center for 210 mm (8.27 in) chucks, built around a 37.5 kW (50.29 hp) spindle that turns to 4,500 rpm and delivers 369.2 Nm (272.3 ft-lb). It turns parts up to 356 mm (14.01 in) in diameter and 535 mm (21.06 in) long, and the machine weighs 7,000 kg (15,432 lb).

The useful comparison is with the TM8i, which shares the 210 mm (8.27 in) chuck and the 356 mm (14.01 in) turning diameter. The TM8i carries a 23.2 kW (31.11 hp) spindle with 221.5 Nm (163.41 ft-lb) at up to 4,000 rpm and weighs 4,030 kg (8,885 lb). Against the TM8i, the TMX8i has about 67% more spindle torque, a higher 4,500 rpm ceiling and about 74% more machine weight. That mass is what lets a lathe take the heavier depths of cut its motor allows without chatter, so the TMX8i suits forged or cast steel blanks rather than light bar work.

Travels are 203 mm (8 in) on X and 560 mm (22.05 in) on Z, with a W axis of 640 mm (25.2 in) travel. All three axes rapid at 30 m/min (1181 ipm). Distance between centers is 754 mm (29.68 in), swing over the bed 640 mm (25.2 in) and swing over the cross slide 415 mm (16.34 in). Bar capacity is 64.5 mm (2.54 in).

The 12-station turret takes 25 mm x 25 mm shank tools and boring bars up to 40 mm (1.57 in), a size that keeps internal turning stiff in deeper bores. The table lists no live-tool figures for this model. Parts that need cross holes or milled flats point to the TMX8MYi, which carries 5,000 rpm live tooling and 55 mm (2.17 in) of Y travel. Like every Hurco, the TMX8i runs WinMax with conversational programming as well as NC.