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Open Back Power Press

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JH21 Series

Pneumatic Open Back Press With Dry Clutch And Hydraulic Overload Protector

Image of Open Back Power Press - JH21 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; JH21-315B/400B adopts eight-face lengthen guide way.
  • Equipped with hydraulic overload protecting device.
  • 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.
  • JH21-45 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.
  • Electric compelling grease lubrication system.
  • Balancing cylinder adopts manual lubrication system.
  • One set of blowing device.
  • 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 JH21-25B JH21-25 JH21--45 JH21-63 JH21-80 JH21-110
Capacity kN 250 250 450 630 800 1100
Nominal Stroke mm 3 3 4 4 5 6
Slide Stroke mm 60 80 100 120 140 160
SPM Fixed min-1 100 100 80 70 60 50
Variable 80-120 80-120 70-90 60-80 50-70 40-60
Max. Die Height mm 200 250 270 300 320 350
Die Height Adjustment mm 50 50 60 80 80 80
Between Slide Center & Frame mm 160 210 230 300 300 350
Bolster (FB×LR) mm 300×680 400×700 440×810 580×900 580×1000 680×1150
Bolster Opening (Up Hole Dia.×Dpth×Low Hole Dia.) mm 130×260 φ170×20
×φ150
φ180×30
×φ160
φ200×40
×φ180
φ200×40
×φ180
φ260×50
×φ220
Bolster Thickness mm 70 80 110 110 120 140
Bolster Opening (Dia./FB×LR) mm 200×270 260×250 300×300 390×460 390×520 420×540
Slide Area (FB×LR) mm 270×330 300×360 340×410 400×480 420×560 500×650
Shank Hole (Dia.×Dpth) mm φ40×60 φ40×60 φ40×60 φ50×80 φ50×80 φ60×80
Between Columns mm 448 450 550 560 640 760
Main Motor Power kW 3 3 5.5 5.5 7.5 11
Outline Size (FB×LR×H) mm 1150×1050
×2050
1300×1050
×2050
1390×1200
×2400
1580×1210
×2520
1640×1280
×2700
1850×1450
×3060
Net Weight kg 2200 2600 3450 5400 7000 9340
Model JH21-125 JH21-160B JH21-200 JH21-200B JH21-250
Capacity kN 1250 1600 2000 2000 2500
Nominal Stroke mm 6 6 6 6 8
Slide Stroke mm 160 160 180 200 200
SPM Fixed min-1 50 40 35 35 30
Variable 40-60 35-50 30-40 30-40 25-35
Max. Die Height mm 350 350 390 450 430
Die Height Adjustment mm 80 110 110 110 120
Between Slide Center & Frame mm 350 380 390 390 420
Bolster (FB×LR) mm 680×1150 740×1300 760×1400 760×1400 800×1400
Bolster Opening (Up Hole Dia.×Dpth×Low Hole Dia.) mm φ260×50
×φ220
φ300×50
×φ260
φ300×50
×φ260
φ300×50
×φ260
φ320×50
×φ280
Bolster Thickness mm 140 150 160 160 170
Bolster Opening (Dia./FB×LR) mm 420×540 φ470 φ470 φ470 370×570
Slide Area (FB×LR) mm 540×680 580×770 600×800 600×800 650×850
Shank Hole (Dia.×Dpth) mm φ60×80 φ65×85 φ65×90 φ65×90 φ70×90
Between Columns mm 760 850 870 870 960
Main Motor Power kW 11 15 18.5 18.5 22
Outline Size (FB×LR×H) mm 1850×1490
×3060
2280×1550
×3240
2500×1580
×3320
2500×1580
×3420
2730×1640
×3550
Net Weight kg 9900 14500 17000 17350 23500
Model JH21-250B JH21-315 JH21-315B JH21-400 JH21-400B
Capacity kN 2500 3150 3150 4000 4000
Nominal Stroke mm 8 8 8 10 10
Slide Stroke mm 250 200 250 200 250
SPM Fixed min-1 30 30 30 25 25
Variable 25-35 25-35 25-35 20-30 20-30
Max. Die Height mm 500 430 550 430 550
Die Height Adjustment mm 120 120 120 120 120
Between Slide Center & Frame mm 420 420 460 420 490
Bolster (FB×LR) mm 800×1400 800×1400 880×1600 760×1400 940×1800
Bolster Opening (Up Hole Dia.×Dpth×Low Hole Dia.) mm φ320×50
×φ280
φ320×50
×φ280
φ320×50
×φ280
φ320×50
×φ280
φ320×50
×φ280
Bolster Thickness mm 170 170 200 180 200
Bolster Opening (Dia./FB×LR) mm 370×570 440×580 440×580 440×580 440×580
Slide Area (FB×LR) mm 650×850 650×850 700×950 690×900 720×1000
Shank Hole (Dia.×Dpth) mm φ70×90 φ70×90 φ70×90 φ70×90 φ70×90
Between Columns mm 960 920 920 960 960
Main Motor Power kW 22 30 30 37 37
Outline Size (FB×LR×H) mm 2770×1700
×4060
2770×1650
×3550
2850×1700
×4450
2830×1680
×3890
3100×1900
×4600
Net Weight kg 24500 25000 28000 29500 34000