Which device on a press brake uses fluid pressure to apply force?

• A. Mechanical
• B. Electric
• C. Hydraulic
• D. Pneumatic

Answer: (C)

Fluid pressure acting on a piston in a hydraulic cylinder converts fluid energy into the linear force needed to move the press brake ram. This hydraulic system uses a pump and control valves to push the piston, delivering high tonnage and smooth, controllable bending force. Mechanical drives rely on linkages and cams, electric drives use motors, and pneumatic systems use compressed air (which is less suitable for heavy, steady bending due to air’s compressibility). So the device that uses fluid pressure to apply force is the hydraulic system.