NC Torsion Bar Press Brake
NC Press Brake

NC Torsion Bar Press Brake

With advanced design,advanced configuration and fashion appearance, Press brake advantage is high rigidity,high precision and high efficiency .
Description Specification Details Pictures
Standard configuration:
  1. Double cylinders control ram moving upward and downward.
  2. Right-and-lift balance achieved by torsion synchronization.
  3. NOK Japan layer seals for main cylinders.
  4. Schneider key electrics.
  5. Upper tools fast clamps.
  6. Standard front supports arms.
  7. Motor:Siemens,Germany.
  8. Oil pump:Rexroth,Germany
  9. Hydraulic system:Rexroth,Germany
  10. Clip-and -sleeve pipe system.
  11. The two fingers of back-gauge for 2500mm length machine( three fingers for 3200mm length machine; four fingers for 4000mm)
  12. Electrical cabinet with ABB switch power outage.
  13. With safety side door and back doors.
  14. Optional ESTUN 300,Holland DA41S system
1.Hydraulic / Mechanical ram, synchronised positive stop design, ram stroke controlled by precision mechanical nut depth stops built into each cylinder. Electronically controlled by Estun NC-E21 Programmable digital control assuring accurate repeatability.
2.Parallelism is ensured by torsion bar that can be easily adjusted by clutch system.
3.Estun NC-E21 programmable digital control stores up to 40 unique programs with 25 automatic progressive bending steps in each individual program, assuring production accuracy & repeatability every time.
4.Estun NC-E21 programmable hardened ballscrew back-gauge system, simply enter the desired measurement into the controller and press go, the backgauge then will move quickly into the position you have requested. The superior hardened ballscrew system eliminates any backlash that leadscrew type machines produce.
5.Segmented heavy duty 86° offset top punch is segmented for return bend clearance, complete with European style punch holder with an adjustable wedge clamping system for crowning. Intermediate clamp has safety key to stop punch dropping.
6.Multi vee ('V') bottom die is made from one 3200mm solid die block design to handle heavy plate, safety edge vee ('V') is incorporated in bottom die block.
7.Conveniently mounted control box on pendant for quick swivel and adjustments.
8.Mono-block steel frame design, welded then machined to ensure Min bed deflection under load
9.Enclosed rear gate with micro safety switches complete with sliding rear door for easy access.
10.European Intermediate clamping system, allowing operator to change position of tooling to suit multiple requirements on complex applications. This feature ensures Min down time, more productivity and results in reduced cost per finished product.
11.Sliding steel fabricated sheet supports enabling a wide range of material sizes to be aligned and supported at the correct required height. This feature is achieved with a "T" slot machined down the total length of the die bed sheet supports are also adjustable vertically to assist in supporting material with return bends already folded.
12.Adjustable sliding blocks control the machines beam to provide desirable open height distance to the (slow speed) mute bending point. Operator adjustable locking knobs for quick adjustment, enables accurate repeatability and increased productivity.
13.Metal safety guarding surrounding the machine with rear sliding door fitted and micro switch ensuring operator safety. Clear access panels placed at each end of machine allows the operator to clearly view tooling and work piece during bending operation.
14.Hydraulic MPA pressure gauge mounted on right side of support frame with quick adjusting pressure control knob allowing operator to accurately set the pressure required for different material thickness, incorporating with hydraulic overload protection.
15.Welded steel fabricated synchronised torsion bar horizontally supporting main bending beam to provide consistent parallelism that also can be adjusted for taper correction.
16.The vertical supporting slides are treated to provide greater ware resistance and increased accuracy.
17.Reinforced side frames providing addition support strength to machine throat
18.Mild steel capacity is rated on hot rolled material with 250MPA
1.Swivel pendant control unit operated by Estun NC-E21 control.
2.Sliding front sheet support arms.
3.Emergency stop buttons conveniently located on control panel and foot control.
4.Mobile dual operation foot control.
5.Segmented 86° offset top punch.
6.Solid one piece four way multi vee (V) die block.
7.Top punch tool intermediate holder system with wedge type adjustment.
8.Powered hardened ballscrew back-gauge with 550-1000mm travel, operated by Estun NC-E21 control.
9.Oil tank level indicator.
10.Metal constructed safety guarding surrounding machine with clear side viewing panels.
11.Integrated hydraulic system allowing rapid approach switching automatically to slow bend.

Please see the Youtube video as following:

EB5 Series Technical Parameters
Model Nominal pressure
Worktable length
Distance between housings
Throat depth
Max. opening height
30T/1600 300 1600 1280 200 80 285 3 1600x1000x1600
35T/2000 350 2000 1480 200 80 285 4 2000x1100x1800
40T/2200 400 2200 1850 230 100 320 5.5 2200x1200x1910
40T/2500 400 2500 1850 230 100 320 5.5 2500x1200x1910
50T/2500 500 2500 1850 230 100 320 5.5 2500x1200x2000
63T/2500 630 2500 1900 250 100 320 5.5 2500x1300x2210
63T/3200 630 3200 2500 250 100 320 5.5 3200x1300x2210
80T/2500 800 2500 1900 300 100 320 7.5 2500x1400x2300
80T/3200 800 3200 2500 320 100 350 7.5 3200x1500x2300
80T/4000 800 4000 3000 320 100 350 7.5 4000x1500x2400
100T/2500 1000 2500 1900 320 120 320 7.5 2500x1600x2400
100T/3200 1000 3200 2500 320 120 370 7.5 3200x1600x2600
100T/4000 1000 4000 3000 320 120 370 7.5 4000x1600x2700
125T/3200 1250 3200 2500 320 120 370 7.5 3200x1600x2600
125T/4000 1250 4000 3000 320 120 370 7.5 4000x1600x2700
160T/3200 1600 3200 2500 320 200 460 11 3200x1700x2700
160T/4000 1600 4000 3000 320 200 460 11 4000x1700x2800
160T/5000 1600 5000 4000 320 200 460 11 5000x1900x3100
160T/6000 1600 6000 4940 320 200 460 11 6000x1900x3200
200T/3200 2000 3200 2500 320 200 460 11 3200x1950x2800
200T/4000 2000 4000 3000 320 200 460 11 4000x1950x2800
200T/5000 2000 5000 4000 320 200 460 11 5000x1950x3000
200T/6000 2000 6000 5000 320 200 460 11 6000x1950x3300
250T/3200 2500 3200 2500 400 250 590 18.5 3200x2000x3200
250T/4000 2500 4000 3000 400 250 590 18.5 4000x2000x3400
250T/5000 2500 5000 4000 400 250 590 18.5 5000x2000x3400
250T/6000 2500 6000 5000 400 250 590 18.5 6000x2000x3400
300T/3200 3000 3200 2530 400 250 590 22 3200x2000x3450
300T/4000 3000 4000 3000 400 250 590 22 4000x2000x3450
300T/5000 3000 5000 4000 400 250 590 22 5000x2000x3450
300T/6000 3000 6000 5000 400 250 590 22 6000x2000x3450
400T/4000 4000 4000 3000 400 250 590 30 4000x2180x3400
400T/5000 4000 5000 4000 400 250 590 30 5000x2180x3500
400T/6000 4000 6000 5000 400 250 590 30 6000x2180x3800
500T/5000 5000 5000 4000 400 250 590 45 5050x3500x3700
500T/6000 5000 6000 5000 400 320 590 45 6050x3500x3700
600T/4000 6000 4000 3000 400 320 590 55 4050x4500x3700
600T/6000 6000 6000 5000 400 320 590 55 6050x4500x3700
800T/6000 8000 6000 5000 400 320 590 55 6300x4500x6000
Note: No notice if any changes of the above statistics made.
Integral Welding
Steel Plate, Carbon Steel
The integral welding of vertical plate of front worktable and press brake body ensured no gap between worktable vertical plate and side plate.
Controller with Suspension Arm
E21s, Estun
The press brake controller adopts suspension device which refers to man-machine engineering design, making the controller not only easy to be controlled but also with high accuracy and comfort.
Front Support Arms
The front support arms is in simple structure and powerful functions. It can be adjusted up and down and can move along the worktable.
Electric System
Schneider, France
The stability of the machine is guaranteed by using the French Schneider electrical components, and the vibration of the X axis is eliminated by the inverter of Taiwan SHIHLIN brand.
Open Door Power-off Function
For Safety Protection
The design of the open door power-off function ensures the safety of the operators.
Siemens, Germany
Adopt Siemens motor to guarantee the service life of the press brake and reduce the noise at work.
Oil Pump
Sunny, USA
The Sunny oil pump from USA ensure the service life and reduce the noise of the press brake during working.
Pedal Switch
Kacon, South Korea
The KACON pedal switch with emergency button from South Korea increased service life and operating sensitivity.
Hydraulic System
Rexroth, Germany
1.The Japanese NOK sealing ring not only improved the service life of oil cylinder but also ensure that there is no oil leakage after long-term use.
2.Adopt Germany Rexroth brand integrated hydraulic system with hydraulic transmission, stable and reliable. The design of integrated hydraulic system can effectively reduce the problems caused by hydraulic oil leakage.
3.Adopt Germany EMB tubing and connector to reduce the welding slag block the valve and keep the hydraulic oil flow smoothly inside.
Mechanical Punch Holder
Fast Clamp, Standard
The tool clamping system in mechanical which make it much safer for workers to change the punch.
Fast Clamp
The tool clamping system in mechanical which make it much safer for workers to change the punch.
Punch and Dies
The press brake adopts 42CrMo material, and the heat treatment temperature reaches 42 degrees, which guarantees the service life of the die.
Back Stopper
Customize Amount optional
The back stopper can be moved left and right manually in order to meet production requirements. The forward and backward movement are controlled by the system.
Straightness Adjustment
The worktable straightness of the press brake is adjusted through the specailly designed screw on the ram.
High-precision Backgauge System
HIWIN Ball Screw, Taiwan
1.The high-precision motorized backgauge adopt precision ball screw and rod which driven by high performance motor in order to guarantee positioning accuracy.
2.The backgauge is equipped with shell horizontal mounting structure with high stability. Besides, it’s in single shell dual rail guide with high precision. The X-axis movement is automatically controlled by the controller.
3.Standard X-axis movement together with manually adjustment of R axis. The back stop finger can move left and right along the dual rail track.
Safety Gates
Safety Protection
The left, right and rear gates of the press brake ensure the safe operation of the workers.
Back Emergency Stop Switch and Stroke Switch
Schneider electrical components
The rear emergency stop switch and stroke switch adopt Schneider electrical components in order to ensure stable control and long service life.
Hydraulic Crowning
Connect with controller
The hydraulic crowning will improve bending accuracy and straightness.
Mechanical Crowning
Manual Optional
The mechanical crowning will improve bending accuracy and straightness.
Laser Protection
DSP, Italy Optional
Italy’s DSP Laser front protection system with CE norm will ensure the safety of worker’s fingers.
Front Light Curtain
China brand Optional
Front light curtain with CE norm will ensure the safety of the worker’s fingers.
Rear Light Curtain
China brand Optional
Rear light curtain with CE norm will ensure the safety of the workers.
Fast Clamp
KYOKKO, Japan Optional
The mechanical fast clamp will reduce the die changing time greatly.
Die Holder
Special Design Optional
Press brake die holder make the change of die much more convenient and time-saving. And can section bottom die
Dual-V Die
For thin sheet bending optional
The dual-V die is optional for sheet metal bending.
Segment Die
The segment die is necessary for small workpiece fabrication.