Haas DT-2

The Haas DT-2 is a BT30 drill/tap vertical machining center with 28 × 16 × 15.5 in (711 × 406 × 394 mm) of travel, a 10,000 rpm spindle and 2,400 ipm (61 m/min) rapids. It is the middle of three DT sizes that share one spindle rating, one tool changer and the same Y and Z strokes, so choosing between them comes down to X travel and table length.

The DT-1 has 20 in (508 mm) of X and a 26 × 15 in (660 × 381 mm) table. The DT-3 has 36 in (914 mm) of X and a 38 × 15 in (965 × 381 mm) table. The DT-2 sits between them with a 34 × 15 in (864 × 381 mm) table, long enough for a row of small vises or one long fixture plate. Weight is the thing to plan around: Haas gives a maximum table load of 250 lb (113.4 kg) and 500 lb (226.8 kg) evenly distributed, and a plate with several vises can use much of that before any part is loaded.

The inline direct-drive spindle is rated 15 hp (11.2 kW) with 46 ft-lbf (62 N·m) at 1,700 rpm, and tapping runs at up to 5,000 rpm. Tools are limited to 2 in (51 mm) in diameter, 7 in (178 mm) in length and 5.5 lb (2.5 kg), so this is a machine for drills, taps and small end mills, not for large face mills. Z thrust is 4,200 lbf (18,683 N) against 2,550 lbf (11,343 N) on X and Y, about 65% more, which fits a machine that spends its time pushing drills straight down.

The 20+1 side-mount tool changer swaps tools in 1.75 s tool-to-tool and 2 s chip-to-chip, and cutting feeds reach 1,200 ipm (30.5 m/min), so the time between holes on a part with dozens of them stays short. Haas lists a starting price of US$70,995 for the base machine. It ships at 5,350 lb (2,427 kg) and runs on 220 VAC three-phase at 40 A or 440 VAC at 20 A.