Manual Hitachi g 12 sa3 (page 8 of 64) (English, German, Dutch, French, Italian, Portuguese, Spanish)

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SPECIFICATIONS

*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

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.

[In the case of Tool-less wheel guard](Fig. 3)

⅜ Set the wheel ass’y to the packing gland.

⅜ Tighten M5 screw to secure the wheel guard while

the lever is in closed position.

⅜ 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.)

⅜ After adjustment, if grinder operation is required,

perform the operation only after setting the lever

in closed position.

⅜ 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 “ASSEMBLING

AND DISASSEMBLING THE DEPRESSED CENTER

WHEEL”

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

enough to accept the spindle length.

Do not use cutting off wheel for side grinding.

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 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.

Model G12SA3 G13SB3

Voltage (by areas)* (110V, 230V, 240V)

Power Input* 1300 W

No-load speed* 11000 min

-1

Wheel

outer dia. × hole dia. 115 × 22 mm 125 × 22 mm

peripheral speed 80 m/s

Weight (only main body) 1.9 kg

01Eng_ G12SA3_WE 08/12/10, 14:317

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Hitachi g 12 sa3 Manual

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