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English
SPECIFICATIONS
Model
Voltage (by areas)*
Power input*
No-load speed
outer dia × hole dia
peripheral speed
Weight (only main body)
Wheel
G12SA G13SB
(110V, 115V, 120V, 127V, 220V, 230V, 240V)
750W*
10000/min
115 × 22 mm 125 × 22 mm
4800 m/min
2.0 kg
*Be sure to check the nameplate on product as it is subject to change by areas.
STANDARD ACCESSORIES
(1) Depressed Center Wheel ........................................... 1
(2) Wrench ........................................................................ 1
(3) Side Handle ................................................................. 1
Standard accessories are subject to change without notice.
OPTIONAL ACCESSORY
Handle Joint
To be used when you attach the side handle to the
right side of the tool.
Optional accessory is subject to change without notice.
APPLICATIONS
Removal of casting fin and finishing of various
types of steel, bronze and aluminum materials and
castings.
Grinding of welded sections or sections cut by
means of a cutting torch.
Grinding of synthetic resins, slate, brick, marble,
etc.
PRIOR TO OPERATION
1. Power source
Ensure that the power source to be utilized con-
forms 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 effective-
ness. 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. Always hold the body handle and side handle of
the power tool firmly. Otherwirse the counterforce
produced may result in inaccurate and even dan-
gerous operation.
7. Conducting a trial run
Before commencing grinding operation, the ma-
chine should be given a trial run in a safe area to
ensure that it is properly assembled and that the
depressed center wheel is free from obvious de-
fects.
Recommended trial run durations are as follows:
After replacing grinding wheel
........................................... 3 minutes or more
Prior to starting routine work
............................................ 1 minute or more
8. Confirm the lock plate
Confirm that the lock plate is disengaged by push-
ing the lock plate two or three times before switch-
ing the power tool on. (See Fig. 2)
9. 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. 1, the machine should be held at an
angle of 15˚ ~ 30˚ so that the external edge of the
depressed center wheel contacts the material at an
optimum angle.
3. To prevent a new depressed center wheel from
digging into the workpiece, initial grinding should
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