Momentum MLD 50

The Momentum MLD 50 is the middle model of Momentum's flat-bed CNC lathes, with 1,265 mm (50 in) of swing over the bed, 850 mm (33.4 in) over the cross slide and center distances of 1,400-12,400 mm (55.1-488.1 in) in 1,000 mm steps. Standard capacity between centers is 9,000 kg (19,841 lb), and two heavier ratings, 13,000 kg or 18,000 kg, are options.

Its bed is the point to understand before ordering. The MLD 50 has a two-way bed, 700 mm (27.5 in) wide with an auxiliary guide at 850 mm (33.4 in), and on this layout the turret cannot pass the steady rests. Any shaft long enough to need a steady therefore has to be planned around it: turn up to the rest, then reposition the rest or turn the part end for end. The MFA 60, with its four-way bed, lets the turret pass. If steady-rest work is the main job, that difference matters more than the extra swing.

From the carriage up, the MLD 50 has much in common with the larger machine. Its cross slide is 420 mm (16.5 in) wide and its carriage 950 mm (37.4 in), the same widths listed for the MFA 60, and it takes the same H4-350 or V12 hydraulic turrets, with a BMT-75 as the option, with or without Y axis. X travel is 730 mm (28.7 in).

The spindle figures follow the MLC 40 instead: a FANUC αiI 30 motor at 30 / 37 kW (40.2 / 49.6 hp) and 600 rpm with the standard 6 in bore, 800 rpm as an option. The MLD 50 adds one bore size above the MLC 40, a 16 in bore on an A2-28 nose limited to 250 rpm. The intermediate bores run 450 rpm (9 in), 400 rpm (12 in) and 300 rpm (14.5 in). An αiI 40 motor at 37 / 45 kW (49.6 / 60.3 hp) is optional.

Rapids are 6 m/min (236.2 in/min). The tailstock quill is a 185 mm (7.2 in) rotating type with 250 mm (9.8 in) of travel, and 250 mm (9.8 in) or 350 mm (13.7 in) quills can be ordered for heavier work. The machine weighs 17,000 kg (37,478 lb) at 1,000 mm center distance and adds 1,500 kg (3,307 lb) per extra 1,000 mm.