Durma HD-TC 120500 MEGA

The Durma HD-TC 120500 MEGA is the largest tube and profile laser Durma lists. It holds round tube up to Ø500 mm (19.7 in), square profile up to 380 x 380 mm (15.0 x 15.0 in) and rectangular profile up to 400 x 350 mm (15.7 x 13.8 in), in lengths up to 12,500 mm (492.1 in). A single workpiece may weigh 2,100 kg (4,630 lb).

Those numbers place it among machines for pipe spools, large structural members and pole sections. Material weight is rated at 175 kg/m, well above the 125 kg/m of the HD-TC 120350 MEGA. The table notes the minimum remaining length as 0 (3 chuck), which indicates a third chuck that lets the tail of a bar be passed through and cut instead of scrapped.

Everything about the motion is tuned for mass. The A axis rotates at 150 °/s, less than half the rate of the 350 mm machines, while X and Y both run at 50 m/min and Z at 30 m/min. On a Ø500 mm tube the surface still passes under the head quickly at that rotation speed, so the lower figure is less of a handicap than it looks on paper.

A chain loader and a chain unloader are standard, with semi automatic loading for material 4,500-12,000 mm long. The smallest tube is Ø40 mm (1.6 in). Positioning accuracy is ±0.2 mm and positioning variation ±0.05 mm. The unloading-length row for this model is not printed cleanly in the brochure and is left out of the table here. Open profiles up to 380 x 380 mm (15.0 x 15.0 in) are covered.