Select the control type. Manual hydraulic control suits high-volume runs of consistent simple bends at the lowest capital cost. CNC control becomes justified when part complexity, batch variety, or tolerance requirements exceed what manual operation can reliably deliver. The ROI inflection point for CNC typically arrives when the combined cost of operator error — rework, rejects, and setup time — exceeds the amortized cost of CNC automation.
Verify tooling interface compatibility. Specify either European Standard (Promecam/Amada, 13mm tang) or New Standard (Wila/Trumpf, ±0.01mm precision) at the time of machine purchase. Tooling from one standard is not interchangeable with the other without an adapter, and the correct choice depends on whether you are integrating with existing tooling inventories or specifying a new system from scratch.
Choose the drive type. Hydraulic is the right choice for heavy tonnage, thick plate, and high-volume production where maximum force is the priority. Servo-electric is appropriate for precision work, energy efficiency, and light-to-medium material thicknesses — with the 80% energy saving over hydraulic delivering a significant reduction in operational costs. Hybrid press brakes suit applications requiring both high force and lower energy consumption than a pure hydraulic machine provides.
Account for long-term operational costs. A servo-electric press brake consuming approximately 12 kWh/day versus approximately 60 kWh/day for a comparable hydraulic unit represents a substantial difference in energy cost over the machine’s service life. Add hydraulic oil change costs (every 4,000–6,000 operating hours), filter replacement schedules, and tooling replacement cycles to complete the total cost of ownership comparison between drive types.
Inside radius and minimum flange length are additional design parameters that interact with machine selection: smaller inside radius means tighter bends, which demands specific punch tip radii and may require higher tonnage per unit thickness than a standard calculation suggests.