200T×4000 CNC Hydraulic Press Brake

1. Definition

A 200T×4000 CNC / NC hydraulic press brake is a stand-alone torsion-bar hydraulic bending machine for sheet metal. The workpiece is bent between upper and lower tools under programmed ram motion. Nominal force is about 2000 kN (200 t class); the common working-table length in the parameter set used here is about 4000 mm.

It is fabrication equipment — not a roll former, not a shear, and not a cut-to-length (CTL) line.

2. How it works

1. Load the sheet onto the table
2. Position with the backgauge
3. Ram descends and bends between tools
4. Return stroke

NC systems such as ESTUN E21 are common on this class; higher CNC packages (for example DA41S / E300 class) appear as upgrades when the job needs more axes or storage.

3. Capacity and table length

Marketing language for this family often pairs about 4 m width with about 6.0 mm nominal thickness. Actual bendable thickness still depends on material strength, tooling, and V-die opening — do not treat “6 mm” as a universal guarantee for every grade.

Some commercial packages for the same product family also mention a 3200 mm table length alongside the 4000 mm parameter-table figure. Those lengths must not be averaged into one invented size. Confirm the working-table length on the contract.

4. Technical parameters

5. Controls and components

• NC: ESTUN E21
• Hydraulic pump: Sunny (USA)
• Valves: XINLI; fittings: JS (Germany type)
• Main motor: SUNGTA (Siemens optional)
• Electrics / inverter: Schneider / Schlin
• Cylinder: Wuyang
• Tools: 42CrMo, about HRC 47±2

6. Common options

• Mechanical or hydraulic crowning
• Light-curtain or laser guarding
• Siemens main motor
• Air / oil cooling
• Special tooling
• CNC upgrades (DA41S / E300 class)

7. Related machines

• Shear — cuts blanks; often inquired together, but separately specified
• CTL / cut-to-length line — coil leveling and length cutting; not this press brake
• Roof-panel roll formers — form profiles from coil; different equipment class

8. Applications

Sheet-metal bending for fabrication and structural parts in plants that also run roofing or cladding lines. Pairing with a shear is common in inquiry packages, but each machine keeps its own ratings.

9. Inquiry checklist

• Working-table length (4000 vs 3200 class wording)
• Material grade, thickness, bend length / flange needs
• NC level (E21 vs upgrade)
• Crowning, guarding, cooling, special tools
• Whether a matching shear is also required

10. Buyer FAQ

Is this a CTL line?

No. It is a hydraulic press brake for bending between tools.

What force class is it?

Nominal pressure 2000 kN — about 200 t class.

Why mention both 4000 mm and 3200 mm?

Because some packages mix a 4000 mm parameter-table length with 3200 mm commercial wording. Confirm the table length on the contract instead of assuming one unique size.