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1.New 10 Ton Hydraulic Hand Pump Knockout Hole Punch Kit Metal Die 22-60.5mm 
2.22-60.5mm Industry Hydraulic Metal Hole Punch 10 Ton Hand Pump Knockout Kit Die 

Hydraulic Punch Driver
Suitale for punching holes on electric switch boxes and metal sheets. Easy to change 
dies. Make clean punch and cause no damage to the surroundings.Custom punch dies are also available. Please feel free to let us know the height if you want to order square and retangle dues.
Model:SYK-8B
Power(T)£º10T
work travel(MM):25
Crimping range(MM):22-60
Tool standard disposition(MM):?22 ?27.5 ?34 ?43 ?49 ?60.5
Hole digging range:Thickness below 3mm for soft steel sheet


Operating instructions:
1. Use a electric drill to punch a workpiece to make a guide hole before using the hydraulic hole punch.
2. Whirl the pulling rod into the screw of piston cylinder, then ring the rod with a gasket and pass through the lower cutting die with the rod.
3. Put the pulling rod into the guide hole, and whirl the upper cutting die through the rod to make the upper cutting die, workpiece and the lower cutting die connected tightly.
4. Shut the spill valve clockwise, and then press down the hand lever repeatedly to make the piston pump work. When the oil pressure climbing and shear force between the cutting die increasing, the die is starting to punch until it finishes. After punching, the hand lever must be stopped pressing down immediately.
5. Loose the spill valve anticlockwise to release the oil pressure.
6. After punching, the punch kit should be detached to clean thoroughly