Haas DM-1

The Haas DM-1 is a 40-taper drill/mill center with 20 × 16 × 15.5 in (508 × 406 × 394 mm) of travel, 2,400 ipm (61 m/min) rapids and a 10,000 rpm inline direct-drive spindle. It shares its dimensions with the DT-1, which has identical travels, the same 26 × 15 in (660 × 381 mm) table and the same 15 hp (11.2 kW), 46 ft-lbf (62 N·m) spindle rating, but uses a BT30 taper. The DM-1 exists for shops that want that speed with CT40 or BT40 tooling.

What the larger taper buys is tool capacity, not spindle power. The 18+1 side-mount tool changer takes tools up to 2.5 in (64 mm) in diameter, 7 in (178 mm) long and 12 lb (5.4 kg), which covers small face mills, larger drills and insert tooling that the BT30 holders of the DT-1 are too small for. Changes take 1.75 s tool-to-tool and 2 s chip-to-chip.

Torque peaks at 46 ft-lbf (62 N·m) at 1,700 rpm, so this is a machine for fast, light-to-medium cuts: drilling, tapping to 5,000 rpm, and quick milling in aluminium at feedrates up to 1,200 ipm (30.5 m/min). Z thrust is 4,200 lbf (18,683 N), about 65% higher than the 2,550 lbf (11,343 N) of X and Y, which is where a drilling machine needs it.

Table loading needs a careful read. Haas gives a maximum table load of 250 lb (113.4 kg) and a separate figure of 500 lb (226.8 kg) for an evenly distributed load, on a table with three T-slots at 4.92 in (125 mm) centres. A pair of vises and steel parts add up fast against either number.

The spindle is air cooled with air/oil injection lubrication. The machine ships at 5,150 lb (2,336 kg), runs on 40 A at 220 VAC or 20 A at 440 VAC three-phase, and has a starting price of US$77,995.