OTRA has been in supplying fine blanking press for last forty years. In fact most of the fine blanking press that has been installed in Korea has been supplied by OTRA.

Mori Fine Blanking Press is OTRA’s recommendation in terms of precision, productivity and cost efficiency.

Mori’s Fine Blanking Press Products

Customer can select a suitable press based on thickness, material, shape of the product.
Tool for the FB, there are two different types of fixed punch and movable punch. Takes many pieces, progressive, large parts of the tool for fixed punch is used.

Hydraulic FB press that produced has 10 models, from the smallest 160 tons type, to up to 1,500tons.
More recently, developed a Mechanical FB200ton 100SPM and Hydraulic FB500ton 50SPM. It also supports high-speed production.

Production Table（kN）
MFB 1600 2000 2500
FB 1600 2000 2500 3200 4000 6500 8000 10000 12000 15000

Structure and Features of body

  • The frame is welded integral structure, careful annealing has been applied.
  • Cylinder, Bolster and Ram are using a special steel.
  • Ram slide has long and widely eight guides. Can withstand the load eccentricity in composite tool.
  • Top stop device, high-precision fine thread called Mechanical stopper has been used. Mechanical stopper. During production, mechanical stopper is fixed at four hydraulic cylinders. And, the accuracy will remain in a repeat stop within 0.01mm. Therefore, you can maintain a stable high-quality composite molding, also prevent damage to the mold.
  • Lamb, it takes pressure from below by hydraulic and is controlled so as not to vibrate at the lower stop.
  • Main cylinder, V-ring cylinder, Counter cylinder, Auxiliary cylinder of their pressure and timing can be adjusted individually.
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  1. Main cylinder
  2. Main piston
  3. Mechanical stopper
  4. Bottom Bolster
  5. Counter Piston
  6. Slide
  7. Center support
  8. Eight surface guide
  9. Bottom guide
  10. V-ring piston
  11. Top bolster
  12. Fast approach cylinder
  13. Tool safety cylinder

Specification

FB (Hydraulic) MFB (Mechanical)
160 250 320 400 500 650 800 1000 1200 1500 100 160 200 250
Forces
Total force kN 1600 2500 3200 4000 5000 6500 8000 10000 12000 15000 1000 1600 2000 2500
V-ring Force kN 800 1200 1600 2000 2500 3200 4000 5000 6000 300 600 800 1400
Counter Force kN 400 600 800 1000 1250 1300 2000 2500 3000 240 400 500 800
Cutter
Cutter Force		 kN 300 400 600 700 70 120 150 100
Stroke Length mm 20〜100 20〜140 20〜200 50 58 60 67.5
Max Stroke SPM 60 55 50 40 35 30 100
Cutting speed mm/s 3〜70 3〜60 3〜50 3〜45 3〜40
Max Approch Speed mm/s 220 200 180 160
Max Decent Speed mm/s 220 200 180 160
material
Min Sheet Length mm 2440 3000 3400 3600 3750 4000 1600 1700 1800 2400
Width mm 20〜200 40〜250 40〜320 40〜450 60〜550 20〜160 20〜200 20〜150 20〜150
Thickness mm 10 15 16 20 6 8 6 6
Electric Power
Total Power KW 56 69 82 102 136 160 180 192 230 15 35 35 52
Main Drive KW 30 37 55 75 90 110 132 160 5.5 22 22 30
Hydrauric
Oil Cooler KW/h 30 38 45 60 70 90 100 110 130 2.5 4 5 7.5
Oil Tank Capacity L 850 1400 1600 2000 150 250 150
Press
A mm 1445 1625 1725 1750 1825 1900 2040 2310 2310 2375 1160 1300 1100 2100
B mm 1510 1840 1845 2030 2080 2130 2310 2790 2850 2950 1110 1190 1200 1900
C mm 1435 1625 1815 1830 1850 1980 2200 2250 2250 2410 1150 1280 1350 1290
D mm 2900 3400 3000 3300 3300 3400 3800 3900 4050 4400 2650 3100 3160 3680
E mm 1465 1715 1450 1450 1450 1450 1450 1450 1450 1450 1470 1710 1714 1257
F mm 1265 1415 1150 1150 1140 1080 1060 1060 1040 1010 1390 1620 1624 894
G mm 0 0 480 530 665 870 1175 1520 1660 2050 0 0 0 785
H mm 2460 2600 2660 2700 2840 3200 3500 3800 3800 4050 1620 3030 3250 2120
I mm 7010 7440 7550 7780 7830 8430 8765 9000 9100 9775 3810 2760 3550 7400
FB (Hydraulic) MFB (Mechanical)
160 250 320 400 500 650 800 1000 1200 1500 100 160 200 240
Tool Space
Upper Bolster
a		 mm 500 650 800 850 900 1000 1100 1150 1200 430 550 560 650
b mm 500 600 700 750 850 900 1000 1100 430 550 560 650
c mm 75 75
Lower Bolster
e		 mm 500 650 800 850 900 1000 1100 1150 1150 1400 430 560 650
f mm 750 900 950 1000 1050 1200 1300 1300 1500 480 620 560 650
g mm 75 75 110 75
Adapter
Plate
X mm 420 550 650 750 800 950 1000 1200
Y mm 500 650 750 800 950 1000 1200
Z mm 80 100 140 160 200
Upper Insert
Ring Du		 mm 320 400 500 720 160 260 320
du mm 180 300 380 580 70 120 250
Tu mm 72 80 120 140 175 30 45 80
Lower Insert
Ring Dl		 mm 250 400 500 720 250 300 320
dl mm 250 400 500 720 140 180 250
Tl mm 72 80 120 140 175 50 60 90
Shut Height mm 230〜320 300〜380 320〜400 360〜460 400〜520 190〜280 210〜340 305〜355 360〜410
Max
Open Height		 mm 370 520 540 600 640 660 700 330 398 477 477.5