Product Description
Open Back Power Press with Dry Clutch and Hydraulic Overload Protector (JH21 Series)
The body of JH21 series power press (mechanical press) is welded with steel plate, so it is with good rigidity and stable precision. The crankshaft is placed lengthways, so the structure is compact and the contour beautiful.
Using the combined pneumatic friction clutch and brake, so the engagement is smooth, the action agile, and the noise low. Gear pair adopts the flooding system lubrication. The slide block is six-face rectangle with longer guide track whose face is bronze panel.
Meanwhile an import hydraulic overload protector is installed in the slide block whose air pump and high pressure ring seal are imported from other country. Its action is agile and reliable. The die set is adjusted by motor over JH21-63 press. There set lifting balance cylinder at the slide block over model JH2I-4O press, whose ring seal is imported from other country.
The air pipeline is controlled by safety duplex valve. Its electric circuit is controlled by import Plicate press can be equipped with air cushion, automatic feed shaft and photoelectric protector, and can be equipped with various automatic equipment which conform to the safety standard of press.
| | JH21-40 | JH21-63 | JH21-80 | JH21-110 | JH21-125 | JH21-160 | JH21-160B | JH21-200 | JH21-200B | JH21-250 | JH21-250B | JH21-315 | JH21-400 |
| Nominal force | KN | 400 | 630 | 800 | 1100 | 1250 | 1600 | 1600 | 2000 | 2000 | 2500 | 2500 | 3150 | 4000 |
| Stroke under nominal force | mm | 4 | 4 | 5 | 6 | 6 | 6 | 6 | 6 | 6 | 8 | 8 | 8 | 10 |
| Slide block stroke | mm | 100 | 120 | 140 | 160 | 160 | 160 | 160 | 180 | 200 | 200 | 250 | 200 | 200 |
| Number of stroke | Fixed | min -1 | 80 | 70 | 60 | 50 | 50 | 40 | 40 | 35 | 35 | 30 | 30 | 30 | 25 |
| Variable | 70-90 | 60-80 | 50-70 | 40-60 | 40-60 | 35-50 | 35-50 | 30-40 | 30-40 | 25-35 | 25-35 | 25-35 | 20-30 |
| Max die set height | mm | 270 | 300 | 320 | 350 | 350 | 350 | 350 | 390 | 450 | 430 | 500 | 430 | 430 |
| Die set height adjustment | mm | 60 | 80 | 80 | 80 | 80 | 110 | 110 | 110 | 110 | 120 | 120 | 120 | 120 |
| Distance from slide block centre to the frame | mm | 230 | 300 | 300 | 350 | 350 | 380 | 380 | 390 | 390 | 420 | 420 | 420 | 420 |
| Worktable dimensions(W*L) | mm | 440×810 | 580×860 | 580×1000 | 680×1150 | 680×1150 | 740×1300 | 740×1300 | 760×1400 | 760×1400 | 800×1400 | 800×1400 | 800×1400 | 800×1400 |
| Dimensions of worktable hole | mm | 160 | 180 | 180 | 220 | 220 | 260 | 260 | 260 | 260 | 280 | 280 | 280 | 280 |
| Thickness of bolster | mm | 110 | 110 | 120 | 140 | 140 | 150 | 150 | 160 | 160 | 170 | 170 | 170 | 180 |
| Hole dimensions in bed(F.B*L.R) | mm | 300×300 | 365 | 365 | 400 | 470 | 470 | 470 | 470 | 470 | 370×570 | 370×570 | 440×580 | 440×580 |
| Dimensions of slide block bottom surface(W*L) | mm | 340×410 | 400×480 | 420×560 | 500×650 | 540×680 | 580×770 | 580×770 | 600×800 | 600×800 | 650×850 | 650×850 | 650×850 | 690×900 |
| Size of the handle hole(Diameter*Depth) | mm | 40×60 | 50×80 | 50×80 | 60×80 | 60×80 | 65×90 | 65×90 | 65×90 | 70×90 | 70×90 | 70×90 | 70×90 | |
| Distance between columns of body | mm | 550 | 620 | 680 | 760 | 760 | 850 | 850 | 870 | 870 | 960 | 960 | 920 | 960 |
| Main motor power | KW | 5.5 | 5.5 | 7.5 | 11 | 11 | 15 | 15 | 18.5 | 18.5 | 22 | 22 | 30 | 37 |
Xuzhou L&B Foreign Trade Co., Ltd is the export company of Xuzhou L&B Machine Tool Co., Ltd, a professional manufacturer and exporter specialized in various kinds of metal working machinery and relative equipments since 2000, our products include: Mechanical Press, Hydraulic Press, Shearing Machine, Bending Machine, Slitting Line, Cut to Length Line, Metal Moulds etc.
In the past 13 years, L&B machines have been exported to dozens of countries and regions all over the world, we have built long-term business relations with some well-known enterprises and accumulate good reputation in the international market, the annual gross sales has already more than twenty million US dollars every year. Some of our machines have CE or ISO9001 certificate, which can meet the safety standard for some countries.
We are ready to cooperate with customers according to our good experience and welcome to visit our company at any time, it is our great pleasure to supply good machinery with best price and sincere service.
