Johnford HT-35-2S

A 10 in main spindle paired with an 8 in sub-spindle on 760 mm (30 in) of Z travel: the Johnford HT-35-2S is the unequal twin-spindle lathe of the small HT frame.

The main side does the heavy half of the job. It has a Ø254 mm (10 in) chuck on an A2-8 nose, a Ø86 mm (3.4 in) bore that passes Ø76.5 mm (3 in) bar, a Ø130 mm (5.1 in) bearing diameter and 15 / 18.5 kW (20.1 / 24.8 hp) at up to 3,500 rpm. The sub-spindle is the lighter, faster unit: Ø203.2 mm (8 in) chuck, A2-6 nose, 11 / 15 kW (14.8 / 20.1 hp) and 4,500 rpm. Its Ø51 mm (2 in) bar capacity is the limit for anything that has to pass through the second spindle.

Compared with the HT-30-2S, which has 550 mm (21.7 in) between centers, this machine has 800 mm (31.5 in), and the weight rises from 7,500 kg (16,500 lb) to 11,000 kg (24,200 lb). X travel is 175 mm (6.9 in) and swing over the cross slide Ø330 mm (13 in).

Single 12-station turret, 45° bed, heavy box ways on all axes. The turret is non-driven unless the live tool turret is ordered, and a bar feeder interface and parts catcher are options for running from bar.