Precautions On Using Disc Grinder; Specifications; Standard Accessories; Prior To Operation - Hitachi Koki G 12SE2 Handling Instructions Manual

PRECAUTIONS ON USING DISC GRINDER

1. Never operate these power tools without Wheel
Guards.
2. Check that speed marked on the wheel is equal to
or greater than the rated speed of the grinder.
Use only a depressed center wheels rated at
80 m/s or more.
3. Ensure that the wheel dimensions are compatible
with the grinder and that the wheel fits the spindle.
4. Abrasive wheels shall be stored and handled with
care in accordance with manufacturer's instructions.

SPECIFICATIONS

Model
Voltage (by areas)*
Input*
No-load speed
Outer dia × inner dia
Wheel
peripheral speed
Weight (main body only)
*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 an acetylene torch.
Grinding of synthetic resins, slate, brick, marble,
etc.
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 power receptacle while
the power switch is in the ON position, the power
tool will start operating immediately, inviting 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.
5. Inspect the grinding wheel before use, do not use
chipped, cracked or otherwise defective products.
6. Always hold the body handle and side handle of
the power tool firmly. Otherwise the counterforce
produced may result in inaccurate and even
dangerous operation.
7. Do not use cutting-off wheels for side grinding.
8. Do not use of separate reducing bushings or adapters
to adapt large hole abrasive wheels.
9. The wheel continues to rotate after the tool is
switched off.
G12SE2
(110 V, 120 V, 230 V, 240 V)
1200 W
11000 min
115 × 22 mm
80 m/s
1.9 kg
4. Fitting and adjusting the wheel guard
The wheel guard is a protective device to prevent
injury should the depressed center wheel be
shattered during operation. Ensure that the wheel
guard is properly fitted and fastened before
commencing grinding operation.
[How to attach and adjusts the wheel guard] (Fig. 2)
Set the wheel ass'y to the packing gland.
Tighten M5 screw to secure the wheel guard
while the lever is in closed position.
Perform the adjustment of the wheel guard while
the lever is released. (Loosen M5 screw and
readjust if the wheel guard does not rotate
smoothly .
After adjustment, if machine operation is
required, perform the operation only after setting
the lever in closed position.
Lubricate the sliding section of the set piece (B)
and the lever if the lever does not move smoothly.
5. Ensure that mounted wheels and points are fitted
in accordance with the manufacturer's instructions.
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".
Ensure that blotters are used when they are provided
with the bonded abrasive product and when they
are required.
Do not use separate reducing bushings or adaptors
to adapt large hole abrasive wheels.
For tools intended to be fitted with threaded hole
wheel, ensure that the thread in the wheel is long
enouth to accept the spindle length.
Do not use cutting off wheel for side grinding.
English
G13SE2
–1
125 × 22 mm
21