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JH21L
WORLD
-45ton punching capacity
-dry type pneumatic clutch
-automatic grease lubrication
-7 shifts stroke lengths adjustable, suitable for different type tools
-standard equip with safety light barriers and frequency inverter

![]() Power press stroke length adjusting mechanismThe mechanism is installed in front of the crankshaft, adjustable by manual. Motorized adjustment is optional. There is a hole for operator to check the right stroke length position. A knob for adjusting the stroke length is located on the press console. When adjusting, the pneumatic cylinder will drive the adjusting shaft out. Use a spanner to adjust the shaft to the wanted position. Turn back the stroke adjusting knob and the shaft will return back to original position. |
| JH21-25L | JH21-45L | ||||
| Capacity | kN | 250 | 450 | ||
| Nominal Stroke | mm | 3 | 4 | ||
| Slide Stroke | mm | 10-110 | 20-120 | ||
| SPM | Fixed | min-1 | 100 | 80 | |
| Variable | min-1 | 80-120 | 70-90 | ||
| Max. Die Height | mm | 250 | 270 | ||
| Die Height Adjustment | mm | 50 | 60 | ||
| Throat Depth | mm | 210 | 230 | ||
| Between Columns | mm | 450 | 550 | ||
| Bolster | LR | mm | 700 | 810 | |
| FB | mm | 400 | 440 | ||
| Thk | mm | 80 | 110 | ||
| Bolster Opening | mm | φ170×20 | φ180×30 | ||
| (Up Hole Dia.×Dpth×Low Hole Dia.) | ×φ150 | ×φ160 | |||
| Slide Area | LR | mm | 360 | 600 | |
| FB | mm | 300 | 360 | ||
| Shank Hole | Dia. | mm | φ40 | φ40 | |
| Dpth | mm | 60 | 60 | ||
| Main Motor Power | kW | 4 | 5.5 | ||
| Dimensions | FB | mm | 1500 | 1610 | |
| LR | mm | 950 | 1170 | ||
| H | mm | 2650 | 2850 | ||
| Net Weight | kg | 3100 | 4350 | ||
-45ton punching capacity
-dry type pneumatic clutch
-automatic grease lubrication
-7 shifts stroke lengths adjustable, suitable for different type tools
-standard equip with safety light barriers and frequency inverter

![]() Power press stroke length adjusting mechanismThe mechanism is installed in front of the crankshaft, adjustable by manual. Motorized adjustment is optional. There is a hole for operator to check the right stroke length position. A knob for adjusting the stroke length is located on the press console. When adjusting, the pneumatic cylinder will drive the adjusting shaft out. Use a spanner to adjust the shaft to the wanted position. Turn back the stroke adjusting knob and the shaft will return back to original position. |
| JH21-25L | JH21-45L | ||||
| Capacity | kN | 250 | 450 | ||
| Nominal Stroke | mm | 3 | 4 | ||
| Slide Stroke | mm | 10-110 | 20-120 | ||
| SPM | Fixed | min-1 | 100 | 80 | |
| Variable | min-1 | 80-120 | 70-90 | ||
| Max. Die Height | mm | 250 | 270 | ||
| Die Height Adjustment | mm | 50 | 60 | ||
| Throat Depth | mm | 210 | 230 | ||
| Between Columns | mm | 450 | 550 | ||
| Bolster | LR | mm | 700 | 810 | |
| FB | mm | 400 | 440 | ||
| Thk | mm | 80 | 110 | ||
| Bolster Opening | mm | φ170×20 | φ180×30 | ||
| (Up Hole Dia.×Dpth×Low Hole Dia.) | ×φ150 | ×φ160 | |||
| Slide Area | LR | mm | 360 | 600 | |
| FB | mm | 300 | 360 | ||
| Shank Hole | Dia. | mm | φ40 | φ40 | |
| Dpth | mm | 60 | 60 | ||
| Main Motor Power | kW | 4 | 5.5 | ||
| Dimensions | FB | mm | 1500 | 1610 | |
| LR | mm | 950 | 1170 | ||
| H | mm | 2650 | 2850 | ||
| Net Weight | kg | 3100 | 4350 | ||
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