Functional Description; Operation; Maintenance - Makita JN3200 Instruction Manual

8. Do not touch the punch, die or the workpiece
immediately after operation; they may be
extremely hot and could burn your skin.
9. Avoid cutting electrical wires. It can cause serious
accident by electric shock.
SAVE THESE INSTRUCTIONS.
WARNING:
DO NOT let comfort or familiarity with product (gained
from repeated use) replace strict adherence to safety
rules for the subject product. MISUSE or failure to
follow the safety rules stated in this instruction
manual may cause serious personal injury.

FUNCTIONAL DESCRIPTION

CAUTION:
• Always be sure that the tool is switched off and
unplugged before adjusting or checking function on the
tool.
Permissible cutting thickness (Fig. 1)
The thickness of material to be cut depends upon the
tensile strength of the material itself. The groove on the
die holder acts as a thickness gauge for allowable cutting
thickness. Do not attempt to cut any material which will
not fit into this groove.
Max. cutting capacities
Steel up to 400 N/mm
Steel up to 600 N/mm
Steel up to 800 N/mm
Aluminum up to 200 N/mm
006439
Switch action (Fig. 2)
CAUTION:
• Before plugging in the tool, always check to see that
the switch trigger actuates properly and returns to the
"OFF" position when released.
To start the tool, simply pull the switch trigger. Release the
switch trigger to stop.
For continuous operation, pull the switch trigger and then
push in the lock button.
To stop the tool from the locked position, pull the switch
trigger fully, then release it.
ASSEMBLY
CAUTION:
• Always be sure that the tool is switched off and
unplugged before carrying out any work on the tool.
Punch replacement
Fit the wrench provided onto the lock nut and tap the
handle lightly with a hammer to loosen the lock nut. Take
off the die holder and use a wrench to remove the screw.
Then remove the punch. (Fig. 3 & Fig. 4)
To install the punch, insert it into the punch holder with its
cutting edge facing forward so that the pin in the punch
6
mm ga
2
3.2 10
2
2.5 13
2
1.0 20
2
3.5 10
holder fits into the groove in the punch. Install the screw
and lock nut. Then tighten them securely. (Fig. 5)
NOTE:
• When installing the screw and lock nut, be sure to
tighten securely. If they become loose during operation,
the tool may break down.

OPERATION

Pre-lubrication
Coat the cutting line with machine oil to increase the
punch and die service life. This is particularly important
when cutting aluminum.
Cutting method (Fig. 6)
Smooth cutting is achieved by holding the tool upright and
applying gentle pressure in the cutting direction.
Apply tool oil to the punch about every 10 meters of mild
steel or stainless steel to be cut. Light oil or kerosene
should be used to keep an aluminum lubricated
continuously. Failure to lubricate aluminum in the cut will
cause chips to adhere to the tool, dulling the die and
punch and increasing load on the motor.
Cutouts (Fig. 7)
Cutouts can be done by first opening a round hole of
about 42 mm diameter or more in the material.
Cutting stainless steel (Fig. 8)
There is more vibration when cutting stainless steel than
mild steel. Less vibration and better cutting is possible by
adding another washer (standard equipment) beneath the
die.
Use the hex wrench provided to remove the two screws
and insert the washer below the die. Replace screws and
tighten securely.

MAINTENANCE

CAUTION:
• Always be sure that the tool is switched off and
unplugged before attempting to perform inspection or
maintenance.
• Never use gasoline, benzine, thinner, alcohol or the
like. Discoloration, deformation or cracks may result.
Punch & die service life
Replace or sharpen punch and die after cutting the
lengths indicated in the accompanying table. Their life, of
course, depends upon the thickness of materials cut and
lubrication conditions.
Replace after 150 m of 3.2 mm steel
Punch
Sharpen after 300 m of 3.2 mm steel
Die
006441
When cutting is poor even after replacing the punch,
sharpen the die. Grind down the dull edge shown in the
figure using a grinder. After rough-grinding the dull
portion, finish with a dressing stone. Stock removal should
be about 0.3 to 0.4 mm. (Fig. 9)
sheet
sheet