Main features
1. The whole machine is in sheet plate welded structure, which internal stress eliminated by vibration aging technology, high strength and good rigidity of machine.
2. Double hydraulic oil cylinder is applied for upper transmission, provided with mechanical limit stopper and synchronous torsion bar, stable and reliable operation, as well as high precision.
3. Electrical adjustment and manual fine-tuning adjustment mode are adopted for distance of rear stopper and stroke of gliding block, and fitted with digital display device, easy and quick in use.
4. Upper clamp is fitted with compensation device.  
5. Worktable mechanical compensation or hydraulic compensation device is optional.

Standard Facilities:
 1. ESTUN E21 NC control + Frequency inverter
 2.Front support arms
3. Motorized stroke adjustment 
4. T slot on both front side and back side of the worktable
5.  OMAGE Hydraulic valve
6.  SUNNY hydraulic pump 
7.  Siemens famous brand motor  
8.  Siemens or Schneider Electric parts
9.  Machine power is turn-off when the electric cabinet door opened 
10. Upper clamps with Anti Wedges 
11. Hydraulic and Electrical overload protection
12. Side safety guard and Full height back safety guard
13. With standard Top punch and Bottom Die
14. Back gauge beam is made of profile steel and liner guide
15. Back gauge is supported with ball screw and polished steel round bar with 0,05mm accuracy
Estun E21 NC Press Brake Control system:
1. Monochrome LCD Box Panel.
2. Integral factor programmable freely
3. Automatic positioning control
5.Internal time relay
6.Ram stroke counter