ROMI GL 170G

The ROMI GL 170G is a gang-tool turning center for small parts cut from bar: 170 mm (6.7 in) of maximum turnable diameter, a 6,000 rpm A2-5” spindle and no turret at all. Tools are bolted in a row on a slotted table, and the cross slide carries each one to the work in turn.

That layout explains the unusual travels. X travel, at 450 mm (17.7 in), is longer than the 300 mm (11.8 in) of Z, because X has to carry the whole line of tools past the spindle. The gang table measures 180 x 550 mm with 3 T slots and is inclined at 60° so chips fall away. With no turret to unclamp and index, tool-to-tool time is only the X move, and X rapids at 36 m/min (1,417 in/min), faster than the 30 m/min (1,181 in/min) of Z.

Bar capacity is 42 / 51 mm (1.6 / 2 in) through a 60 mm (2.4 in) spindle bore. The main motor is rated 15 cv (14.79 hp) / 11 kW, and Romi notes that the headstock sits on insulating plates to keep cartridge heat out of the base. External turning tools are 20 x 20 mm (0.79 x 0.79 in) and internal tools Ø 25 mm (0.98 in). A bar feeder and a parts dresser are options.

The trade-off of gang tooling is clearance. Every tool on the table has to miss the chuck and the part while its neighbour cuts, so the number of tools shrinks as part diameter grows, and there is no tailstock in the specification. For short, bar-fed parts made in volume that rarely matters. The control is a Fanuc 0i-TF Plus with touchscreen, the footprint 2,200 x 1,900 mm (86.6 x 74.8 in) without chip conveyor, and installed power 20 kVA.