Manual Hitachi DM 20 V (page 6 of 42) (English, German, Dutch, French, Italian, Portuguese, Spanish)

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English

4. Selecting the appropriate drill bit

⅜ When boring concrete or stone

Use the drill bits specified in the Optional Accessories.

⅜ When boring metal or plastic

Use an ordinary metalworking drill bit.

⅜ When boring wood

Use an ordinary woodworking drill bit.

However, when drilling 6.5 mm or smaller holes, use

a metalworking drill bit.

5. Mounting and dismounting of the bit.

The country of use will determine whether Type A or

Type B keyless chuck is required.

⅜ Type A (Fig. 1)

(1) Mounting the bit

Turn the lock collar in the direction “AUF” and open

the chuck. After inserting the drill bit into the chuck

as far it will go, turn the lock collar in the “ZU”

direction. Grip the ring and close the chuck by turning

the sleeve clockwise as viewed from the front.

(2) Dismounting the bit

Turn the lock collar in the direction “AUF” to release

the chucking force. Grip the ring and open the chuck

by turning the sleeve counterclockwise.

NOTE

When the sleeve does not become loose any further,

fix the side handle to ring, hold side handle firmly,

then turn the sleeve to loosen by hand. (Fig. 3)

⅜ Type B (Fig. 2)

(1) Mounting the bit

Turn the sleeve counterclockwise and open the chuck.

After inserting the drill bit into the chuck as far it will

go, grip the ring and close the chuck by turning the

sleeve clockwise as viewed from the front.

(2) Dismounting the bit

Grip the ring and open the chuck by turning the

sleeve counterclockwise.

NOTE

When the sleeve does not become loose any further,

fix the side handle to ring, hold side handle firmly,

then turn the sleeve to loosen by hand. (Fig. 3)

STANDARD ACCESSORIES

(1) Side Handle................................................................ 1

(2) Depth Gauge .............................................................. 1

Standard accessories are subject to change without

notice.

OPTIONAL ACCESSORIES (sold separately)

(1) Impact Drill Bit (for concrete)

3.2 mm – 20 mm dia.

Optional accessories are subject to change without notice.

APPLICATIONS

⅜ By combined actions of ROTATION and IMPACT:

Boring holes in hard materials (concrete, marble,

granite, tiles, etc.)

⅜ By ROTATIONAL action:

Boring holes in metal, wood and plastic.

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, 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.

PRECAUTIONS ON USING MASONRY DRILL

1. Wear ear protections

Exposure to noise can cause hearing loss.

2. Before drilling into walls, ceilings or floors, ensure

that there are no concealed power cables inside.

3. Use auxiliary handles supplied with the tool.

Loss of control can cause personal injury.

4. Always use side handle and hold the tool firmly with

both hands.

5. Always use the masonry drill with clockwise rotation,

when using it as a masonry drill. (Fig. 10)

Voltage (by areas)* (110V, 220V, 230V, 240V)

Power input 790 W*

Speed change 1 2

No load speed

Forward rotation 0 – 1000 min

-1

0 – 3000 min

-1

Reverse rotation 0 – 600 min

-1

0 – 1800 min

-1

Steel 13 mm 8 mm

Capacity Concrete 20 mm 13 mm

Wood 40 mm 25 mm

Full load impact rate 5500 min

-1

18000 min

-1

Weight (without cord) 2.5 kg

SPECIFICATIONS

*Be sure to check the nameplate on product as it is subject to change by areas.

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Hitachi DM 20 V Manual

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