Functional Description; Operation; Maintenance - Makita JN3201 Betriebsanleitung

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
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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.
• Switch can be locked in "ON" position for ease of oper-
ator comfort during extended use. Apply caution when
locking tool in "ON" position and maintain firm grasp on
tool.
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 (Fig. 3, 4 & 5)
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.
To install the punch, insert it into the punch holder with its
cutting edge facing forward so that the pin in the punch
holder fits into the groove in the punch. Install the screw
and lock nut. Then tighten them securely.
NOTE:
• When installing the screw and lock nut, be sure to
tighten securely. If they become loose during operation,
the tool may break down.
mm ga
2
3.2 10
2
2.5 13
2
1.0 20
2
3.5 10

OPERATION

CAUTION:
• Hold the tool firmly with one hand on the main handle
when performing the tool.
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 continu-
ously. 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.
The tool and its air vents have to be kept clean. Regularly
clean the tool's air vents or whenever the vents start to
become obstructed.
Punch & die service life (Fig. 9 & 10)
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.
Punch Replace after 150 m of 3.2 mm steel sheet
Die Sharpen after 300 m of 3.2 mm steel sheet
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When cutting is poor even after replacing the punch,
sharpen the die. Grind down the dull edge shown in
Fig. 9 using a grinder. After rough-grinding the dull por-
tion, finish with a dressing stone. Stock removal should
be about 0.3 to 0.4 mm.
When installing ground die, a clearance of 3.5 to 4.0 mm
should be obtained by attaching one or two of the washer
provided, as shown in Fig. 10. Failure to have the proper
clearance will result in vibration during cutting.
5