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Open Back Power Press

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JF21 Series

Pneumatic Open Back Press With Dry Clutch And Shearing Block Protector

Image of Open Back Power Press - JF21 Series

Main Features

  • Welded body with steel plate and high intensity.
  • Main motor is made by Siemens.
  • Adopts combined pneumatic friction clutch and brake.
  • Cluster gear adopts the flooding oil lubrication.
  • Six-face rectangle lengthen guide.
  • Rigid pressing down style overload protector.
  • JF21-25/25B/45 adopts manual shut height adjustment, among these types JF21-25/45 adopts scale display and JF21-25B with digital display.
  • JF21-63 and above type adopts electric shut height adjustment with digital display.
  • JF21-45 can equip with die set height adjustment motor, the value will be displayed by digital.
  • JF21-25B, JF21-45 and above type equipped with lifting balance cylinder.
  • Duplex valves imported.
  • Adopt grease lubrication system.
  • Balancing cylinder adopts manual lubrication system.
  • Controlled by PLC with international brand.
  • Buttons, indicators, AC contactors, air circuit breakers and other controlling devices are imported from international brand.
  • Equipped with optional air cushion device, automatic feed shaft and photoelectric protector, which can used to work with various automatic equipments.

Specifications

Model JF21-25B JF21-25 JF21--45 JF21-63 JF21-80
Capacity kN 250 250 450 630 800
Nominal Stroke mm 3 3 4 4 5
Slide Stroke mm 60 80 100 120 140
SPM Fixed min-1 100 100 80 70 60
Variable 80-120 80-120 70-90 60-80 50-70
Max. Die Height mm 200 250 270 300 320
Die Height Adjustment mm 50 50 60 80 80
Between Slide Center & Frame mm 160 210 230 300 300
Bolster (FB×LR) mm 300×680 400×700 440×810 580×900 580×1000
Bolster Opening (Up Hole Dia.×Dpth×Low Hole Dia.) mm 130×260 φ170×20×φ150 φ180×30×φ160 φ200×40×φ180 φ200×40×φ180
Bolster Thickness mm 70 80 110 110 120
Bolster Opening (Dia./ FB×LR) mm 200 260 300 390 390
270 250 300 460 520
Slide Area (FB×LR) mm 270 250 340 400 420
330 360 410 480 560
Shank Hole (Dia.×Dpth) mm φ40 φ40 φ40 φ50 φ50
60 60 60 80 80
Between Columns mm 448 450 550 560 640
Main Motor Power kW 3 3 5.5 5.5 7.5
Outline Size (FB×LR×H) mm 1150×1050
×2050
1300×1050
×2050
1390×1125
×2315
1580×1210
×3320
1640×1280
×2700
Net Weight kg 2200 2600 3450 5400 7000
Model JF21-110 JF21-125 JF21-160B JF21-200 JF21-200B
Capacity kN 1100 1250 1600 2000 2000
Nominal Stroke mm 6 6 6 6 6
Slide Stroke mm 160 160 160 180 200
SPM Fixed min-1 50 50 40 35 35
Variable 40-60 40-60 35-50 30-40 30-40
Max. Die Height mm 350 350 350 390 450
Die Height Adjustment mm 80 80 110 110 110
Between Slide Center & Frame mm 350 350 380 390 390
Bolster (FB×LR) mm 680×1150 680×1150 740×1300 760×1400 760×1400
Bolster Opening (Up Hole Dia.×Dpth×Low Hole Dia.) mm φ260×50
×φ220
φ260×50
×φ220
φ300×50
×φ260
φ300×50
×φ260
φ300×50
×φ260
Bolster Thickness mm 140 140 150 160 160
Bolster Opening (Dia./ FB×LR) mm 420 420 480 φ470 φ470
540 540 600
Slide Area (FB×LR) mm 500 540 580 600 600
650 680 770 800 800
Shank Hole (Dia.×Dpth) mm φ60 φ60 φ65 φ65 φ65
80 80 85 90 90
Between Columns mm 760 760 850 870 870
Main Motor Power kW 11 11 15 18.5 18.5
Outline Size (FB×LR×H) mm 1850×1450
×3060
1850×1490
×3060
2230×1630
×3210
2500×1580
×3320
2500×1580
×3420
Net Weight kg 9340 9880 14420 17000 17350