Excetek ED30C

The Excetek ED30C is the smallest CNC die sinking EDM in the ED series, with 300 mm (11.8 in) of X travel, 250 mm (9.8 in) of Y and 300 mm (11.8 in) of Z. Excetek's one-line description of it is "Compact with easy operation performance", and the figures bear that out: the whole installation, counting machine body, travel, tank and generator, fits in 2,340 x 1,690 x 2,250 mm (92.1 x 66.5 x 88.6 in) and the machine weighs 1,450 kg (3,197 lb).

Part of the reason is the dielectric system. The 350 L oil filter tank is built in, with two paper filters, so there is no separate tank to place beside the machine. The work table measures 650 x 350 mm (25.6 x 13.8 in), wider than the X stroke, and carries up to 550 kg (1,213 lb).

Electrode weight is limited to 50 kg (110 lb). That is the same limit Excetek gives for the ED400C, a machine nearly twice as heavy, so the head is not the weak point of the small model. Travel is. With 300 x 250 mm under the electrode, the ED30C is a machine for inserts, small cavities, ribs and connector tooling, not for mold bases.

The generator uses a MOSFET sparking circuit, which the maker credits with low electrode wear, and is built from front and back modules with fuse protection on each circuit. The ED Series catalogue adds roller type linear guide ways, AC servo motors, a work table hardened to HRC50 and 18 kinds of OB modes for orbiting. An automatic electrode changer, a C axis, X/Y/Z linear scales and the tungsten carbide sparking circuit are optional equipment.