Bedienungsanleitung Hitachi G 12SA (Seite 5 von 22) (Holländisch)

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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

䡬 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

䡬 Removal of casting fin and finishing of various

types of steel, bronze and aluminum materials and

castings.

䡬 Grinding of welded sections or sections cut by

means of a cutting torch.

䡬 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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