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Hitachi G18SG Manual

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English
SPECIFICATIONS
*1 Be sure to check the nameplate on product as it is subject to change by areas.
*2 Weight: Only main body
*3 The starting current limiter produces the starting current to such an extent that a fuse (16A, slow-blow)
is not tripped.
STANDARD ACCESSORIES
(1) Wrench ........................................................................ 1
(2) Side handle ................................................................ 1
Grinding wheels are not provided as standard accessories.
Standard accessories are subject to change without
notice.
APPLICATIONS
⅜
Removal of casting fin and finishing of various types
of steel, bronze and aluminum materials and castings.
⅜ Grinding of welded sections or sections cut by
means of a cutting torch.
⅜ Grinding of synthetic resins, slate, brick, marble, etc.
⅜ Cutting of synthetic concrete, stone, brick, marble
and similar materials.
PRIOR TO OPERATION
1. Power source
Ensure that the power source to be utilized conforms
to the power requirements specified on the product
nameplate.
2. Power switch
Ensure that the power switch is in the OFF position.
If the plug is connected to a receptacle while the
power switch is in the ON position, the power tool
will start operating immediately, which could cause
a serious accident.
3. Extension cord
When the work area is removed from the power
source, use an extension cord of sufficient thickness
and rated capacity. The extension cord should be
kept as short as practicable.
4. Fitting and adjusting the wheel guard
The wheel guard is a protective device to prevent
injury should the depressed center wheel shatter
during operation. Ensure that the guard is properly
fitted and fastened before commencing grinding
operation. By slightly loosening the setting screw,
the wheel guard can be turned and set at any
desired angle for maximum operational
effectiveness. Ensure that the setting screw is
thoroughly tightened after adjusting the wheel guard.
5. Ensure that the depressed center wheel to be utilized
is the correct type and free of cracks or surface
defects. Also ensure that the depressed center wheel
is properly mounted and the wheel nut is securely
tightened, Refer to the section on “Depressed Center
Wheel Assembly”
6. Conducting a trial run
Ensure that the abrasive products is correctly
mounted and tightened before use and run the tool
at no-load for 30 seconds in a safe position, stop
immediately if there is considerable vibration or if
other defects are detected.
If this condition occurs, check the machine to
determine the cause.
6. Conducting a trial run
Ensure that the abrasive products is correctly
mounted and tightened before use and run the tool
at no-load for 30 seconds in a safe position, stop
immediately if there is considerable vibration or if
other defects are detected.
If this condition occurs, check the machine to
determine the cause.
7. Confirm the spindle lock mechanism
Confirm that the spindle lock is disengaged by
pushing push button two or three times before
switching the power tool on (See Fig. 1).
8. Fixing the side handle
Screw the side handle into the gear cover.
PRACTICAL GRINDER APPLICATION
1. Pressure
To prolong the life of the machine and ensure a
first class finish, it is important that the machine
should not be overloaded by applying too much
pressure. In most applications, the weight of the
machine alone is sufficient for effective grinding.
Too much pressure will result in reduced rotational
speed, inferior surface finish, and overloading which
could reduce the life of the machine.
2. Grinding angle
Do not apply the entire surface of the depressed
center wheel to the material to be ground. As
shown in Fig. 2, the machine should be held at an
angle of 15° – 30° so that the external edge of the
Model
G18SH G18U G18SE2 G18UA G18SG G18UB G23SF G23U
G23SC2
G23UA G23SE G23UB
Voltage (by areas)*
1
(110V, 115V, 120V, 127V, 220V, 230V, 240V)
Input*
1
2000 W 2200 W 2400 W 2000 W 2200 W 2400 W
No-load speed 8500/min 6600/min
Outer dia. 180 mm 230 mm
Wheel Inner dia. 22 mm
peripheral speed 4800m/min
Weight*
2
4.3 kg 5.0 kg 4.3 kg 5.0 kg
Starting current limiter*
3
No Yes No Yes No Yes No Yes No Yes No Yes
… 6 …


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