Makita JN3200 Owners Manual - Page 7

per pass; two passes should suf

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Maintenance After using, clean out the die area, lubricate with machine oil, run for a minute or two and store the tool. Punch & die service l i f e 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 (492.1 ft.) of 3.2 mm (118") steel sheet Sharpen after 3 0 0 m 1984.3 ft.) of 3.2 m m (118") steel sheet *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-grindingthe dull portion, finish with a dressing stone. Stock removal should be about 0.3 t o 0.4 mm (1/64") per pass; two passes should suffice. Grind/sharpen; Remove dull portion When installing ground die, a clearance of 3.5 t o 4.0 mm (1/8" to 5/32") should be obtained by attaching one or two of the washer provided, as shown in the figure. Failure t o have the proper clearance will reulst in vibration during cutting. Caution ; Secure installing screws carefully when installing. A loose screw can cause tool breakage during operation. rm 3.5-4.0mm I Washer

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Maintenance
After using, clean out the die area, lubricate with machine
oil,
run for
a
minute or two
and store the tool.
Replace after
150
m
(492.1 ft.)
of 3.2
mm
(118") steel sheet
Sharpen after 300
m
1984.3 ft.)
of 3.2
mm
(118")
steel sheet
Punch
Punch
&
die service
life
Replace or sharpen punch and die after
cutting the lengths indicated in the
ac-
companying table. Their life, of course,
depends upon the thickness
of
materials
cut and lubrication conditions.
*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 por-
tion, finish with
a
dressing stone. Stock
removal should be about
0.3
to
0.4
mm
(1/64") per pass; two passes should suf-
fice.
When installing ground die,
a
clearance of
3.5
to
4.0
mm
(1/8"
to
5/32")
should be
obtained by attaching one or two
of
the
washer provided,
as
shown in the figure.
Failure
to
have the proper clearance will
reulst in
vibration
during cutting.
Caution
;
Secure installing screws carefully when
installing.
A
loose screw can cause tool
breakage during operation.
Grind/sharpen;
Remove
dull
port
ion
3.5
-4.0
mm
I
rm
Washer