Specifications; Standard Accessories; Prior To Operation; Practical Grinder Application - Hitachi Koki G 13SD Handling Instructions Manual

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SPECIFICATIONS

Model
Voltage (by areas)*
Power Input*
No-load speed
Outer dia. × hole dia.
Wheel
Peripheral speed
Weight (Only main body)
*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.
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 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"
4
G10SD2
(110V, 115V, 220V, 230V, 240V)
-1
11000 min
100 × 16 mm
72 m/s
6. Conducting a trial run
Before commencing grinding operation, the machine
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 defects.
Recommended trial run durations are as follows:
After replacing depressed center wheel
Prior to starting routine work
7. Confirm the push button.
Confirm that the push button is disengaged by
pushing push button two or three times before
switching the power tool on (See Fig. 2).
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. 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
be performed by drawing the grinder across the
workpiece toward the operator (Fig. 1 direction B).
Once the leading edge of the depressed center
wheel is properly abraded, grinding may be
conducted in either direction.
4. Precautions immediately after finishing operation
After switching off the machine, do not put it down
until the depressed center wheel has come to a
complete stop. Apart from avoiding serious
accidents, this precaution will reduce the amount
of dust and swarf sucked into the machine.
CAUTIONS
When the machine is not use, the power source
should be disconnected.
G12S2
800 W
115 × 22 mm
80 m/s
1.6 kg
··································· 3 minutes or more
····································· 1 minute or more
G13SD
-1
10000 min
125 × 22 mm