Haas SB-35L

The Haas SB-35L stretches the SB-35 to 49.6 in (1,260 mm) of turning length and 52 in (1,320 mm) of Z travel. The working end is unchanged: a 12 in (305 mm) chuck on an A2-8 nose, 3.5 in (90 mm) of bar capacity and a 40 hp (29.8 kW) spindle with a 2,500 rpm top speed. It belongs to Haas's box-way lathe series.

Length is the whole case for this model. The SB-35 turns 30 in (760 mm), so the L version adds about 65% more usable length on the same 13.5 in (345 mm) maximum turning diameter and 9 in (230 mm) of X travel. Long parts need support, and the table lists an MT5 tailstock with 39.4 in (1,000 mm) of travel and a 4.7 in (120 mm) hydraulic quill, with 58.8 in (1,494 mm) between centres. No steady rest appears in the table, so ask Haas about one if the work is slender.

A 2,500 rpm ceiling matters less on shafts than on small bar parts, and the torque is where shafts need it: 425 ft-lbf (576 N·m) at 325 rpm. For heavy roughing on forgings or large-diameter tube there is an optional gearbox listed at 1,400 ft-lbf (1,898 N·m) at 150 rpm. X and Z thrust are both 7,780 lbf (34,607 N). Z rapids at 787 ipm (20 m/min) and X at 630 ipm (16 m/min).

The 12-station turret takes OD and ID tools in any combination and leaves 2 in (51 mm) of rear clearance for boring bars. BMT65 live tooling at 4,000 rpm and a C axis with interpolated motion and positioning are in the table; a Y axis is not. The SB-35LY is the long-bed machine with ± 2 in (± 50 mm) of Y, and its turning envelope is slightly smaller at 12 in (305 mm) by 47.3 in (1,200 mm).

Plan the delivery. Shipping weight is 16,425 lb (7,450 kg) on a 214.5 × 90.5 × 99 in (545 × 230 × 252 cm) pallet, against 14,920 lb (6,767.7 kg) for the SB-35. Haas lists a starting price of US$152,995.