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JH21L
WORLD
This 45-ton variable stroke punching press is built for medium-load metal fabrication, combining robust performance with full operational safety.
. Core performance: 45-ton rated punching capacity, paired with a durable dry-type pneumatic clutch for stable, high-cycle operation.
. Maintenance design: Integrated automatic grease lubrication system, which automatically distributes lubricant to key friction points to reduce wear.
. Flexible configuration: 7 adjustable stroke shifts, fully compatible with different types of stamping and forming tools.
. Standard full package: Equipped with safety light barriers for operator protection, and a frequency inverter to support adjustable motor drive speed.
 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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