C-frame presses, also known as gap frame presses, open frame, or open front presses, consist of a frame shaped roughly like the letter "C,"with a bed at the bottom and a guide and support structure for a moving ram at the top. The frame may be a large casting, or a steel fabrication that is either welded or riveted. The bed, in turn, may be an integral part of the frame, or it may be moveable to adjust the distance between the ram and bed.
The JH21 series C press is with dry clutch and hydraulic overload with steel welded body and good rigidity. This C frame power press has six guide rail sliders, long and high precision, which can prolong its life span.
The crank-shaft is placed vertically, so the structure is compact and the contour is beautiful. It is equipped with combined wet pneumatic friction clutch, so the engagement is smooth, the action is agile and the noise is low.And this crank press is of convenient maintenance. The C frame power press has hydraulic overload protection device which can stop in emergency automatically to enhance the press and die safety for an easy use. This single crank press owns concentrated lubrication system with oil alarm function to ensure that the machine runs smoothly. The high speed press is controlled by LC electric centralized system, with emergency stop, inch, single, continuous operation specification with a drive output shaft, automatic feeding, and air cushion device.
| JH21-25 | JH21-45 | JH21-60 | JH21-80 | JH21-110 | JH21-125 | JH21-160 |
| L | S | L | S | L | S | L | S | L | S | L | S | L | S |
| Nominal capacity | kN | 250 | 450 | 600 | 800 | 1100 | 1250 | 1600 |
| Nominal power stroke | mm | 2.8 | 3.2 | 4 | 4.5 | 5 | 5 | 6 |
| Slide stroke | mm | 80 | 50 | 100 | 70 | 120 | 80 | 140 | 90 | 160 | 100 | 160 | 100 | 180 | 110 |
| Stroke number | variable-speed mode | S.P.M | 70~100 | 80~130 | 60~90 | 70~110 | 50~80 | 60~100 | 40~75 | 50~90 | 35~70 | 45~80 | 30~65 | 45~80 | 30~55 | 35~70 |
| Single speed | S.P.M | 90 | 110 | 80 | 100 | 70 | 90 | 60 | 80 | 60 | 80 | 55 | 70 | 50 | 60 |
| Maximum die height | mm | 250 | 265 | 270 | 285 | 300 | 320 | 320 | 345 | 350 | 380 | 370 | 400 | 400 | 435 |
| Die height adjustment | mm | 50 | 60 | 70 | 80 | 90 | 90 | 100 |
| Throat depth | mm | 210 | 225 | 270 | 290 | 350 | 370 | 390 |
| Distance between columns | mm | 450 | 500 | 560 | 590 | 680 | 710 | 800 |
| Slide bottom size | About | mm | 360 | 410 | 480 | 560 | 620 | 620 | 700 |
| Before and after | mm | 250 | 340 | 400 | 430 | 520 | 520 | 580 |
| Size of the handle hole | Diameter | mm | φ40 | φ50 | φ50 | φ60 | φ70 | φ70 | φ70 |
| Depth | mm | 60 | 60 | 60 | 80 | 80 | 80 | 100 |
| Size of table | About | mm | 710 | 810 | 870 | 1000 | 1100 | 1120 | 1260 |
| Before and after | mm | 400 | 440 | 520 | 560 | 680 | 720 | 760 |
| Thickness | mm | 85 | 110 | 130 | 130 | 160 | 160 | 165 |
| Hole of the table | Diameter | mm | φ100 | φ150 | φ150 | φ150 | φ160 | φ160 | φ180 |
| Motor power of stepless speed regulation | kW | 3 | 5.5 | 7.5 | 7.5 | 11 | 15 | 15 |
| Motor power of single speed | kW | 3 | 5.5 | 5.5 | 7.5 | 11 | 11 | 15 |
| Overall dimensions | About | mm | 950 | 1080 | 1200 | 1385 | 1419 | 1480 | 1573 |
| Before and after | mm | 1350 | 1410 | 1615 | 1915 | 2200 | 2300 | 2355 |
| Height | mm | 2160 | 2300 | 2570 | 2820 | 3190 | 3220 | 3375 |
| Total weight | kg | 3100 | 4000 | 6000 | 7800 | 11000 | 13000 | 14200 |
| JH21-200 | JH21-250 | JH21-315 | JH21-315A | JH21-400 | JH21-400A | JH21-500 |
| L | S | L | S | L | S | L | S | L | S | L | S | L |
| Nominal capacity | kN | 2000 | 2500 | 3150 | 3150 | 4000 | 4000 | 5000 |
| Nominal power stroke | mm | 6 | 7 | 8 | 8 | 8 | 8 | 8 |
| Slide stroke | mm | 200 | 130 | 220 | 150 | 250 | 180 | 250 | 180 | 250 | 180 | 250 | 180 | 250 |
| Stroke number | variable-speed mode | S.P.M | 25~50 | 30~60 | 25~45 | 30~50 | 25~40 | 25~40 | 25~35 | 25~35 | 20~30 |
| Single speed | S.P.M | 45 | 50 | 40 | 45 | 35 | 35 | 30 | 30 | 25 |
| Maximum die height | mm | 450 | 485 | 500 | 535 | 550 | 585 | 500 | 535 | 500 | 585 | 500 | 535 | 550 |
| Die height adjustment | mm | 110 | 110 | 120 | 120 | 120 | 120 | 120 |
| Throat depth | mm | 430 | 450 | 480 | 420 | 480 | 420 | 420 |
| Distance between columns | mm | 900 | 950 | 1050 | 1000 | 1050 | 1000 | 1220 |
| Slide bottom size | About | mm | 880 | 930 | 1000 | 950 | 1000 | 950 | 1000 |
| Before and after | mm | 650 | 700 | 720 | 700 | 720 | 700 | 720 |
| Size of the handle hole | Diameter | mm | φ70 | φ70 | φ70 | φ70 | φ70 | φ70 | φ70 |
| Depth | mm | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
| Size of table | About | mm | 1400 | 1590 | 1700 | 1650 | 1850 | 1800 | 1820 |
| Before and after | mm | 840 | 880 | 940 | 820 | 940 | 820 | 810 |
| Thickness | mm | 200 | 200 | 200 | 200 | 200 | 200 | 240 |
| Hole of the table | Diameter | mm | φ200 | φ250 | φ250 | φ250 | φ250 | φ250 | φ250 |
| Motor power of stepless speed regulation | kW | 22 | 30 | 37 | 37 | 37 | 37 | 55 |
| Motor power of single speed | kW | 15 | 22 | 30 | 30 | 37 | 37 | 55 |
| Overall dimensions | About | mm | 1630 | 1750 | 1950 | 1900 | 2200 | 2150 | 2250 |
| Before and after | mm | 2690 | 2830 | 3400 | 3350 | 3500 | 3450 | 3900 |
| Height | mm | 3810 | 3930 | 4180 | 4100 | 4500 | 4450 | 5255 |
| Total weight | kg | 21000 | 25000 | 33500 | 30000 | 39000 | 36000 | 53000 |
Shanghai Lejia CNC Machine Co., Ltd. is a national new technological enterprise and national important "Torch Plan" implementation organization with integration of research and development, machinery manufacturing, tools designing and building, sales and import and export authority rigths. We are professional manufacturing company holding many domestic and international certificates.
Manufacture ranges: CNC Press brake Machine, shearing machine, CNC-Punch, and Slotting Machine, Rolling bending machine, Straightening, Unrolling, Shearing Production Line and normal Forging Machinery. And pressbrake tools. Shearing blade. Punch tools, etc. The products are awarded highly by the clients with the fame of those precise, reliable and high qualified products produced by the state -in- art manufacturing techniques, which are of reasonable price and excellent after-sale-service.
Our Company is dedicated to contribution for nation by sustainable promotion and improvement in the field of CNC machinery, CNC Machinery Tools and-Cutter-localization.
