8 MAINTENANCE AND INSPECTION
WARNING
Switch off and remove the power plug from the
power supply during maintenance and inspection.
CAUTION
Check all attached parts periodically for loose
screws. Securely tighten any loose screw.
8-1 Tighten the Set Screw when the tool is not in use
For safety reasons, when the tool is not in use or when
the drilling operation is suspended, keep the Drill Motor
from moving downward due to its dead weight by
tightening the stopper set screw with the Drill Motor in
an elevated position. If the Drill Motor is left down, the
Pilot Pin or cutter may be damaged during transit.
(Fig. 37)
8-2 Greasing of sliding surfaces
From time to time, the sliding surfaces between the
body and the Slide Board should be greased. (Fig. 37)
8-3 Loose Slide Board adjustment
Any looseness between the body and the Slide Board
will adversely affect drilling precision, leading to
premature wear on the cutter. When looseness is
encountered, eliminate it by uniformly re-tightening the
four Slide Board adjustment screws on the lateral side
of the body to the extent that the Drill Motor will not fall
under its dead weight. The screws are designed to work
as a double-lock, so they should be securely tightened
by turning the nuts. Do not adjust using the Set Screws.
(Fig. 37)
8-4 Inspection of the Bracket
The Bracket which supports the Spindle Arbor is of
key importance in maintaining drill precision. The
Bracket is tightened by three screws, which should be
inspected from time to time to ensure they are tight.
(Fig. 37)
15
(Fig. 37)
8-5 Sharpening of Pilot Pin tip
If the Pilot Pin tip is dull, the pin will not be able to fit
itself into the punching hole, causing poor drilling precision.
It should be inspected from time to time, and , if the Pilot
Pin tip is found to be dull, sharpen the tip or replace with a
new one. Exercise caution during the sharpening
operation as any rough grinding softens the tip due to
annealing, even to the point of disabling it in some cases.
(Fig. 38)
(Fig. 38)
Sharpen
the tip
Optimal angle
Pilot Pin
Pilot Pin
Cutter
Sleeve
Spindle Arbor
Oil Dropper
Bracket
Side Handle
Drill Motor
Slide Board
Slide Board
adjustment screw
Rod Handle
Set Screw
Body
Model
WARNING
QA
-
4000
NITTO
●
Read instruction manual before use.
●
Always wear eye protection.
●
Never use in the rain. Have a chance
of electric shock. Always ground the
machine.
●
Never touch moving parts.
●
Do not use on the wall or
upsidedown.
●
Use chain to avoid possible
drop of machine.
MADE IN JAPAN
TQ05062
LOAD DETECTOR
ON
LOAD
STOP
VOLTAGE V~(50/60Hz)
DRILL MOTOR 680W
Cutter diameters
Plate thickness
ø17.5~ø40mm Max. 35mm
Max. 12mm
Max. 25mm
ø16~ø18mm
ø14
・
ø15mm
JETBROACH
HIBROACH
MAGNET 50W
DRILL MOTOR SPEED
No
750min-1
NITTO KOHKI CO.,LTD.
QA4000(230V)
10.6.19, 12:52 AM
Page 16
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