Specifications - Hitachi G 18SH Handling Instructions Manual

1
English
SPECIFICATIONS
Model
Gl8St-I~ Gl8U [Gl8SE2~Gl8lJA~Gl8SGlGl8UBlG23SF[ G23U lG23SC2lG23UAlG23SElG23UB
Voltage (by areas) *l (11 OV,
115v,
120v, 127V, 22OV, 23OV, 24OV)-
Input*' 2000W
1
22OOW
1 ~4tXN,A/ 1
2000W
1
2200W
1
2400W
No-load speed I
85OO/min
I 66OO/min I
Outer dia.
18Omm
230mm
Wheel Inner diam. 22mm
Peripheral speed
48OOm/min
Weigth*2 4.3kg
5.Okg 4.3kg
5.Okg
Starting current limiter*3 No Yes No
Yes No Yes No
Yes No
Yes No Yes
* 1 Be sure to check the nameplate on product as it is subject to change by areas.
*2 WeiQht: Onlv main bodv
*3 The starting current limiter produces the starting current to such an extent that a fuse (16A, slow-blow) is not tripped.
STANDARD ACCESSORIES
(I ) Wrench
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
(2)
Side Handle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Grinding wheels are not provided as standard acces-
sories.
Standard accessories are subject to change without
notice.
APPLICATIONS
0 Removal of casting fin and finishing of various
types of steel, bronze and aluminum materials and
castings.
0
Grinding of welded sections or sections cut by
means of a cutting torch.
0 Grinding of synthetic resins, slate, brick, marble,
etc.
o Cutting of synthetic concrete, stone, brick, mar-
ble, and similar materials.
PRIOR TO OPERATION
1.
2.
3.
4.
Power source
Ensure that the power source to be utilized con-
forms to the power requirements specified on the
product nameplate.
Power switch
Ensure that the power switch is in the OFF posi-
tion. If the plug is connected to a power recepta-
cle while the power switch is in the ON position,
the power tool will start operating immediately,
which could cause a serious accident.
Extension cord
When the work area is removed from the power
source, use an extension cord of sufficient thick-
ness and rated capacity. The extension cord
should be kept as short as practicable.
Fitting and adjusting the wheel guard
The wheel guard is a protective device to prevent
injury should the grinding wheel shatter during
operation. Ensure that the guard is properly fitted
and fastened before commencing grinding opera-
tion. By slightly loosening the setting screw, the
wheel guard can be turned and set at any desired
angle for maximum operational effectiveness.
5.
6.
7.
Ensure that the setting screw is thoroughly tight-
ened after adjusting the wheel guard.
Ensure that the grinding wheel to be utilized is the
correct type and free of cracks or surface defects.
Also ensure that the grinding wheel is properly
mounted and the wheel nut is securely tightened.
Refer to the section on "Grinding Wheel Assem-
bly".
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
grinding wheel is free from obvious defects.
Recommended trial run durations are as follows:
After replacing grinding wheel
..*..............................
3 minutes or more
Prior to starting routine work
. . . . . . . . . . . . . . . . . ..*.............
1 minutes or more
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.
2.
3.
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.
Grinding angle
l
Do not apply the entire surface of the grinding
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 grinding
wheel contacts the material at an optimum angle.
To prevent a new grinding wheel from digging into
the workpiece, initial grinding should be perfor-
med by drawing the grinder across the workpiece
toward the operator
(Fig. 2 direction B).
Once
the leading edge of the grinding wheel is properly
abraded, grinding may be conducted in either
direction.