Durma AD-EB 2580

The Durma AD-EB 2580 is an electric press brake that moves its beam with belts and pulleys instead of cylinders or ball screws. It is rated at 80 ton over a 2,550 mm (100.4 in) bending length. Durma lists a coupled motor and reducer and a belt and pulley tackle system as the press group, and no hydraulic oil is used.

One figure in the table is unusual. The distance between columns, 2,840 mm (111.8 in), is larger than the bending length. On a conventional machine the side frames stand inside the bed length and limit how deep a full-length part can go. Here a 2,550 mm part passes between the columns, so the back gauge depth and not the frame decides how deep a long panel can be bent. The table gives no throat depth for that reason.

Open height is generous: 320 mm (12.6 in) of stroke and 500 mm (19.7 in) of daylight. The beam approaches and returns at 105 mm/s. Bending speed is listed as 10-20 mm/s, with a note that under the CE norm it should be a maximum of 10 mm/sec except for robot-aided use.

Standard equipment is a DA-66S control with four axes, Y1, Y2, X and R. The aluminium back gauge travels 650 mm (25.6 in) in X and 250 mm (9.8 in) in R; an X axis of 1000 mm with light barrier back protection is optional. Durma says the body is bolted, not welded. It weighs 6,400 kg (14,109 lb) and measures 3,700 mm (145.7 in) by 2,200 mm (86.6 in) on the floor.