INDEX G200

The INDEX G200 is a turn-mill center for bar and chuck parts up to 200 mm (7.9 in) in diameter and 660 mm (26 in) long, with a counter spindle as standard and up to 3 tool carriers with Y-axis. Up to 3 of those carriers can cut at the same time, which is the main reason to choose it: on a part with many short operations, simultaneous cutting removes much of the cycle time that a single-turret lathe spends in sequence.

Upper and lower turrets each have 12 stations with live tooling, and the table gives a maximum of 42 tool stations in VDI25. Driven tools on the turrets run to 7,200 rpm with 9 kW and 16 Nm. Separately, a motor milling spindle with an HSK-A40 interface is rated 22 kW (30 hp) and 52 Nm (38 ft-lbf) at up to 7,200 RPM. That is more than three times the torque of a turret-driven tool, so heavier milling, larger drills and threading belong on the milling spindle.

The main spindle runs to 6,000 rpm with 20 kW continuous and 24 kW at 40% duty, and 125 Nm continuous and 170 Nm at 40% duty. It takes 65 mm (2.6 in) bar through a 65 mm spindle clearance and a 165 mm (6.5 in) chuck. The counter spindle also reaches 6,000 RPM, so second-side turning runs at the same speed as the first.

Axis travel is 230 mm (9.1 in) in X and 845 mm (33.3 in) in Z, with rapids of 30 m/min on X and 50 m/min on Z. The control is a Siemens S840D sl. The machine weighs approx. 8,500 kg (18,739 lb), measures 5355 × 2235 × 2400 mm (L × W × H) and needs a 42 kW supply.

The G220 Plus shares the same main spindle rating, 165 mm (6.5 in) chuck and 660 mm (26 in) turning length. The G220 Plus table adds a ±60 mm Y-axis stroke and a 5,000 RPM sub spindle, while the G200 table is the one that details the three tool carriers and the motor milling spindle, so compare the two configurations line by line.