JH21 Series C-Frame Double Cranks Press
Product Description
1. Product Features
1. This series of machine tools is a high performance punching machine with an open fixed table, which in-creases the throat depth.
2.The fuselage is welded with integral steel plate to remove internal stress. It has high strength and steel degree, and can flexibly change the depth of throat
3. Crankshaft longitudinal structure, compact structure beautiful appearance.
4. Rectangular hexahedron lengthening guide rail, high guiding accuracy.
5. Combined pneumatic friction clutch/brake, combined smooth, low noise.
6. JH21S adopts hydraulic overload protection device. while JF21S adopts steel safety device to prevent damage to machine tools caused by overload.
7. The circuit is controlled by PLC, and the air circuit by safety double valve, which is sensitive, safe and reliable, with single, inching, continuous operation specifications, in line with the safety standard of punch.
8. The sliding block adopts pneumatic balance device to improve the smoothness and precision of the machine.
9. The machine adopts automatic thick oil lubrication with fixed time, fixed point and fixed quantity, which is suffi-cient, uniform and reliable.
10. Optional automatic feeding device, photoelectric pro-tection device, die cushion, etc.
2. Applications
This open-type press with fixed table is press machine of general use intended for stamping operations such as stamping plate materials. It is fit for punching, cutting, bending, folding and shallow drawing, and is widely used in various industries such as watch making, toys, utensils, communication apparatuses, meters & instruments, electric motors, tractors, auto making, metallic tools and radio components.
Operating capacity of the machine: to use the machine properly and keep it under the optimum operating conditions, it is recommended 70% of the permitted value be adopted as the workload. Please check the following things before using the machine.
1.1 Load capacity: This press machine is not fit for coining operation. Make sure the workload is below the nominal force.
1.2 Torque capacity: The press capacity of the machine changes to the position of the slide block. The “press curve” shows the changes of the press capacity. The workload must be lower than those shown on the curve.
3. Details
| Specification | Unit | JH21-25 | JH21-45 | JH21-60 | JH21-80 | JH21-110 | JH21-125 | JH21-160 | JH21-200 | JH21-250 | JH21-315 | JH21-400 |
| JF21-25 | JF21-45 | JF21-60 | JF21-80 | JF21-110 | JF21-125 | JF21-160 | JF21-200 | |||||
| Capacity | Ton | 25 | 45 | 60 | 80 | 110 | 125 | 160 | 200 | 250 | 315 | 400 |
| Rate tonnage point | mm | 3 | 4 | 4 | 5 | 5 | 5 | 6 | 6 | 7 | 7 | 8 |
| Stroke | mm | 80 | 120 | 140 | 160 | 180 | 180 | 200 | 250 | 250 | 250 | 280 |
| Stroker per Minute | s.p.m | 100 | 80 | 70 | 60 | 50 | 50 | 45 | 45 | 40 | 40 | 35 |
| Die height | mm | 250 | 270 | 300 | 320 | 350 | 350 | 400 | 450 | 500 | 500 | 530 |
| Slide adjustment | mm | 50 | 60 | 70 | 80 | 90 | 90 | 100 | 110 | 120 | 120 | 120 |
| Depth of Throat | mm | 210 | 225 | 270 | 310 | 350 | 350 | 390 | 430 | 450 | 450 | 490 |
| Distance betweenuprights | mm | 450 | 500 | 560 | 620 | 660 | 660 | 720 | 900 | 980 | 980 | 1050 |
| Slide area | mm | 360ｘ250 | 410ｘ340 | 480ｘ400 | 540ｘ460 | 620ｘ520 | 620ｘ520 | 700ｘ580 | 880ｘ650 | 950ｘ700 | 950ｘ700 | 1000ｘ750 |
| Shank hole | mm | ∅40ｘ60 | ∅50ｘ60 | ∅50ｘ60 | ∅50ｘ60 | ∅70ｘ80 | ∅70ｘ80 | ∅70ｘ90 | ∅70ｘ90 | ∅70ｘ100 | ∅70ｘ100 | ∅70ｘ100 |
| Bolster area | mm | 720ｘ400 | 810ｘ440 | 870ｘ520 | 950ｘ600 | 1070ｘ680 | 1070ｘ680 | 1170ｘ760 | 1390ｘ840 | 1500ｘ880 | 1540ｘ880 | 1700ｘ940 |
| Size opening in the table | mm | 150 | 150 | 150 | 150 | 160 | 180 | 200 | 200 | 200 | 200 | 200 |
| Distance from worktable to ground | mm | 780 | 800 | 900 | 900 | 900 | 900 | 900 | 1000 | 1000 | 1000 | 1020 |
| Main motor | kw.p | 2.2ｘ4 | 5.5ｘ4 | 5.5ｘ4 | 7.5ｘ4 | 7.5ｘ4 | 11ｘ4 | 15ｘ4 | 15ｘ4 | 22ｘ4 | 30ｘ4 | 37ｘ4 |
| Slide adjust device | HP | manual operation | electrial driving | |||||||||
| Air pressure | kg/cm2 | 6 | ||||||||||
| Presses precision | GB/JIS 1 class | |||||||||||
| Presses dimension | mm | 1520ｘ1060ｘ2120 | 1620ｘ1130ｘ2340 | 1690ｘ1160ｘ2650 | 1870ｘ1170ｘ2810 | 2020ｘ1315ｘ2985 | 2020ｘ1315ｘ2985 | 2325ｘ1450ｘ3250 | 2580ｘ1690ｘ3810 | 2820ｘ1710ｘ3900 | 2880ｘ1750ｘ3920 | 3150ｘ1940ｘ4320 |
| Die cushion capacity | Ton | 4.5 | 4.5 | 6 | 6 | 8.5 | 8.5 | 8.5 | 11.5 | 15 | 15 | 15 |
| Stroke | mm | 50 | 50 | 60 | 60 | 70 | 70 | 80 | 80 | 90 | 90 | 90 |
| Die cushion effective area | mm2 | - | 300ｘ230 | 350ｘ300 | 450ｘ310 | 500ｘ350 | 500ｘ350 | 650ｘ420 | 710ｘ480 | 710ｘ480 | 710ｘ480 | |