Cincinnati GOFORM 40GX3

The Cincinnati GOFORM 40GX3 is an all-electric press brake rated at 40 tons over a 40 in (1,016 mm) die surface. It is the lightest model Cincinnati lists in the line, with a domestic shipping weight of 6,400 lb (2,903 kg), and the maker describes it as portable by fork truck.

Instead of hydraulic cylinders the ram is driven through planetary roller screws. Cincinnati's argument for that design over ballscrews is that it allows both air bending and bottom bending on one machine. The table lists the motor as 10x2 in the HP column. With no hydraulic oil on board, the maker says the machine can even operate in clean rooms.

For a small electric brake the opening is generous. Stroke length is 10 in (254 mm), closed height 7 in (178 mm) and open height 17 in (432 mm), with an 8 in (203 mm) throat. Ram repeatability is ±0.0002 in (±0.005 mm).

Speed is the reason to choose this model over the GOFORM 60GX3 and GOFORM 60GX5. Approach and return are both 400 ipm (10,160 mm/min), and forming speed is 60 ipm (1,524 mm/min). The GOFORM 60GX3 on the same 40 in (1,016 mm) bed forms at 40 ipm (1,016 mm/min) and approaches at 350 ipm (8,890 mm/min). For small parts in thin material, where cycle time is mostly ram travel, that difference adds up over a shift.

The backgage is Cincinnati's 6xGX, a 6-axis gage. Pass line and control height are both adjustable, so the operator can sit or stand. Tooling is held by a quick clamp system, and angle measuring is optional. Overall height is 98 in (2,489 mm).