Hwacheon L3

The Hwacheon L3 is the largest of Hwacheon's L series: a single size with 3,000 mm (118.1 in) of X, 1,800 mm (70.9 in) of Y and 500 mm (19.7 in) of Z travel over a 3,000 x 1,800 mm (118.1 x 70.9 in) table rated 3,000 kg (6,614 lb). The columns stand 2,050 mm (80.7 in) apart. Unlike the L1 and L2 there is no choice of bed length.

Compared with the Hwacheon L2, the L3 matches the 3,000 mm length of the L2's 3,000 x 1,100 mm (118.1 x 43.3 in) version but takes the table to 1,800 mm (70.9 in) deep, and raises the rating from 2,000 kg (4,409 lb) to 3,000 kg. Thirteen T-slots, 22 mm wide at 140 mm pitch, run across the table. That suits large welded frames, plates and base castings that would not fit the narrower models, provided they stay within 500 mm (19.7 in) of Z and the 100 to 600 mm (3.9 to 23.6 in) gap between spindle nose and table.

The axes are tuned to the bigger mass. Rapids are 20 m/min (787 ipm) in X, 24 m/min (945 ipm) in Y and 36 m/min (1,417 ipm) in Z, so long positioning moves across a large plate take noticeably longer than on a small machine. Cutting feed reaches 20,000 mm/min (787 ipm).

The L3 shares its spindle options with the smaller L models: a 12K BT-40 spindle at 12,000 rpm and 18.5 / 11 kW (24.8 / 14.8 hp), or a 20K at 20,000 rpm and 37 / 18.5 kW (49.6 / 24.8 hp). With 40-taper tooling the machine is set up for milling, drilling and finishing on large flat work rather than heavy roughing of deep cavities. The magazine holds 30 tools, 40 optional, up to 350 mm (13.8 in) long and 8 kg (17.6 lb), and Ø150 mm (Ø5.9 in) with the adjacent pockets empty.

The footprint is 9,630 x 4,420 mm (379.1 x 174.0 in), the height 3,280 mm (129.1 in) and the weight 29,000 kg (63,933 lb). It runs on 45 kVA at 220V, 60Hz with air at 0.5 to 0.7 MPa x 690 Nℓ/min, and the control is a FANUC 0i-MF Plus.