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Impact Drill
Model DV 20VB2
Handling instructions
Note:
Before using this Electric Power Tool, carefully read through these
HANDLING INSTRUCTIONS to ensure effi cient, safe operation. It is
recommended that these INSTRUCTIONS be kept readily available as an
important reference when using this power tool.
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English
EXPLANATION OF SYMBOL
: Class II tool
GENERAL POWER TOOL SAFETY WARNINGS
WARNING
Read all safety warnings and all instructions.
Failure to follow the warnings and instructions may result in
electric shock, fi re and/or serious injury.
Save all warnings and instructions for future
reference.
The term “power tool” in the warnings refers to your
mains-operated (corded) power tool or battery-operated
(cordless) power tool.
1) Work ar ea saf et y
a) Keep work area clean and well lit .
Cluttered or dark areas invite accidents.
b) Do not operate power tools in explosive
atmospheres, such as in the presence of
fl ammable liquids, gases or dust .
Power tools create sparks which may ignite the dust
or fumes.
c) Keep children and bystanders away while
operating a power tool.
Distractions can cause you to lose control.
2) Electrical safety
a) Power tool plugs must match the out let.
Never modify the plug in any way.
Do not use any adapter plugs with earthed
(grounded) power tools.
Unmodifi ed plugs and matching outlets will reduce
risk of electric shock.
b) Avoid body contac t with earthed or grounded
surfaces, such as pipes, radiators, ranges and
refrigerators.
There is an increased risk of electric shock if your
body is earthed or grounded.
c) Do not expose power tools to rain or wet
conditions.
Water entering a power tool will increase the risk of
electric shock.
d) Do not abuse the cord. Never use the cord for
carrying, pulling or unplugging the power tool.
Keep cord away from heat , oil, sharp edges or
moving parts.
Damaged or entangled cords increase the risk of
electric shock.
e) When operating a power tool outdoors, use an
extension cord suitable for outdoor use.
Use of a cord suitable for outdoor use reduces the
risk of electric shock.
f) If operating a power tool in a damp location
is unavoidable, use a residual current device
(RCD) protected supply.
Use of an RCD reduces the risk of electric shock.
3) Personal safety
a) Stay alert , watch what you are doing and use
common sense when operating a power tool.
Do not use a power tool while you are tired
or under the infl uence of drugs, alcohol or
medication.
A moment of inat tention while operating power tools
may result in serious personal injury.
b) Use personal protective equipment. Always
wear eye protection.
2
Protective equipment such as dust mask, non-skid
safety shoes, hard hat, or hearing protection used
for appropriate conditions will reduce personal
injuries.
c) Prevent unintentional start ing. Ensure the
switch is in the off position before connecting
to power source and/or bat tery pack, picking
up or carrying the tool.
Carr ying power tools with your fi nger on the switch
or energising power tools that have the switch on
invites accidents.
d) Remove any adjusting key or wrench before
turning the power tool on.
A wrench or a key left attached to a rotating part of
the power tool may result in personal injury.
e) Do not overreach. Keep proper footing and
balance at all times.
This enables better control of the power tool in
unexpected situations.
f) Dress properly. Do not wear loose clothing or
jewellery. Keep your hair, clothing and gloves
away from moving par ts.
Loose clothes, jewellery or long hair can be caught
in moving parts.
g) If devices are provided for the connection of
dust extraction and collection facilities, ensure
these are connected and properly use d.
Use of dust collection can reduce dust-related
hazards.
4) Power tool use and care
a) Do not force the power tool. Use the correct
power tool for your application.
The correct power tool will do the job better and
safer at the rate for which it was designed.
b) Do not use the power tool if the switch does not
turn it on and off .
Any power tool that cannot be controlled with the
switch is dangerous and must be repaired.
c) Disconnect the plug from the power source
and/or the battery pack from the power tool
before making any adjustments, changing
accessories, or storing power tools.
Such preventive safety measures reduce the risk of
starting the power tool accidentally.
d) Store idle power tools out of the reach of
children and do not allow persons unfamiliar
with the power tool or these instructions to
operate the power tool.
Power to ols are dangero us in the hands of untraine d
users.
e) Maintain power tools. Check for misalignment
or binding of moving parts, breakage of parts
and any other condition that may aff ect the
power toolʼs operation.
If damaged, have the power tool repaired
before use.
Many accidents are caused by poorly maintained
power tools.
f) Keep cut ting tools sharp and clean.
Properly maintained cutting tools with sharp cutting
edges are less likely to bind and are easier to
control.
g) Use the power tool, accessories and tool bits
etc. in accordance with these instructions,
taking into account the working conditions and
the work to be performed.
Use of the power tool for operations diff erent from
those i ntended coul d result in a haza rdous situati on.
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English
5) Service
a) Have your power tool serviced by a qualifi ed
repair person using only identical replacement
parts.
This will ensure that the safety of the power tool is
maintained.
PRECAUTION
Keep children and infi rm persons away.
When not in use, tools should be stored out of reach
of children and infi rm persons.
4. Before drilling into walls, ceilings or fl oors, ensure that
there are no concealed power cables inside.
5. Always use side handle and hold the tool fi rmly with
both hands.
6. Always use the impact drill with clockwise rotation,
when using it as an impact drill. (Fig . 1)
IMPACT DRILL SAFETY WARNINGS
1. Wear ear protectors when impact drilling.
Exposure to noise can cause hearing loss.
2. Use auxiliary handle(s), if supplied with the tool.
Loss of control can cause personal injur y.
3. Hold power tool by insulated gripping surfaces,
when performing an operation where the cutting
accessory may contact hidden wiring or its own
cord. Cutting accessory contacting a "live" wire may
make exposed metal parts of the power tool "live" and
could give the operator an electric shock.
Fig. 1
SPECIFICATIONS
Voltage (by areas)* (110 V, 220 V, 230 V, 240 V)
Power input 730 W*
Speed change 1 2
No load speed 0 – 1000 /min 0 – 3000 /min
Steel 13 mm 8 mm
Capacity
Full load impact rate 8000 /min 26000 /min
Weight (without cord) 2.2 kg
* Be sure to check the nameplate on product as it is subject to change by areas.
Concrete 20 mm 13 mm
Wood 40 mm 25 mm
STANDARD ACCESSORIES
(1) Chuck Wrench (Spec. only for keyed chuck) ...............1
(2) Side Handle ..................................................................1
(3) Depth Gauge ................................................................1
Stand ard accessor ies are subje ct to change wit hout 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
○ By combined actions of ROTATION and IMPACT:
Boring holes in hard materials (concrete, marble,
granite, tiles, etc.)
○ 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 specifi ed 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 suffi cient thickness and rated
capaci ty. The extension cord should be kept as short a s
practicable.
4. Selecting the appropriate drill bit
○ When boring concrete or stone
Use the drill bits specifi ed in the Optional Accessories.
○ When boring metal or plastic
Use an ordinary metalworking drill bit.
○ 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.
For keyed chuck (Fig. 2)
(1) Open the chuck jaws, and insert the bit into the chuck.
(2) Place the chuck wrench in each of the three holes in
the chuck, and turn it in the clockwise direction (viewed
from the front side). Tighten securely.
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English
(3) To remove the bit, place the chuck wrench into one of
the hol es in the chuck a nd turn it in the c ountercloc kwise
direction.
Chuck wrench
Tighten
For keyless chuck
The country of use will determine whether Type A or Type B
keyless chuck is required.
○ Type A (Fig. 3)
(1) Mounting the bit
Turn the lock collar in the direction “AUF” and open
the chuck. After inser ting 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
clock wise 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 counterclock wise.
Sleeve
NOTE
When the sleeve does not become loose any further, fi x
the side handle to ring, hold side handle fi rmly, then turn
the sleeve to loosen by hand. (Fig. 4)
Drill chuck
Loosen
Fig. 2
Loosen
Tighten
Fig. 3
Ring
Lock collar
Ring
(2) Dismounting the bit
Grip the ring and open the chuck by turning the sleeve
counterclockwise.
Sleeve
Loosen
Tighten
NOTE
When the sleeve does not become loose any further, fi x
the side handle to ring, hold side handle fi rmly, then turn
the sleeve to loosen by hand. (Fig. 4)
6. Check the rotational direction (Fig. 6)
The bit rotates clockwise (viewed from the rear side) by
pushing the R-side of the push button.
The L-side of the push button is pushed to turn the bit
counterclockwise.
(The
CAUTION
Always use the impact drill with clockwise rotation,
7. Fixing the side handle (Fig. 7)
Attach the side handle to the mounting part.
Rotate the side handle grip in a clockwise direction to
Set the side handle to a position that is suited to the
and marks are provided on the body.)
when using it as an impact drill.
mark
mark
secure it.
operation and then securely tighten the side handle
grip.
Push button
Ring
Fig. 5
Switch trigger
Fig. 6
Loosen
Sleeve
Side handle
○ Type B (Fig. 5)
(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
clock wise as viewed from the front.
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Fig. 4
Side handle
Loosen Tighten
Fig. 7
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To attach a depth gauge on the side handle, inser t the
gauge into the U-shaped groove on the side handle,
adjust the position of the depth gauge in accordance
with the desired depth of the hole, and fi rmly tighten the
side handle grip. (Fig. 8)
Depth gauge
Gear
shift dial
English
Side handle
Loosen Tighten
Change lever
Impact
Fig. 8
mark).
Rotation
Fig. 9
8. IMPACT to ROTATION changeover (Fig. 9)
Shift the change lever between the right and left
posit ions to switch e asily bet ween IMPACT (rotation a nd
impact) and ROTATION (rotation only), respectively.
To bore holes in hard materials such as concrete,
stone and tiles, shift the change lever to the right-hand
position (as indicated by the
The drill bit operates by the combined actions of impact
and rotation.
To bore holes in metal, wood and plastic, shift the
change lever to the left-hand position (as indicated by
the
mark). The drill bit operates by rotational action
only, as in the case of a conventional electric drill.
CAUTION
○ Do not use the Impact Drill in the IMPACT function if the
material can be bored by rotation only. Such action will
not only reduce drill effi ciency, but may also damage
the drill tip.
○ Operating the Impact Drill with the change lever in
mid-position may result in damage. When switching,
make sure that you shift the change lever to the correct
position.
9. High-speed/Low-speed changeover:
Prior to changing speed, ensure that the switch is in the
OFF position, and the drill has come to a complete stop.
To change speed, rotate the gear shift dial as indicated
by the arr ow in Fig. 10. The numeral “ 1” en graved on the
drill body denotes low speed, the numeral “2” denotes
high speed.
If it is hard to turn the gear shift dial, turn the chuck
slightly in either direction and then turn the gear shift
dial again.
10. RCD
Th e use of a residu al current dev ice with a rate d residual
current of 30mA or less at all times is recommended.
Fig. 10
HOW TO USE
1. Sw itch oper at ion
○ When the trigger is depressed, the tool rotates. When
the trigger is released, the tool stops.
○ The rotational speed of the drill can be controlled by
varying the amount that the trigger switch is pulled.
Speed is low when the trigger switch is pulled slightly
and increases as the trigger switch is pulled more.
○ The desired rotation speed can be pre-selected with
the speed control dial.
Turn the speed control dial clockwise for higher speed
and counterclockwise for lower speed. (Fig. 11)
○ Pulling the trigger and pushing the stopper, it keeps
the switched-on condition which is convenient for
continuous running. When switching off , the stopper
can be disconnected by pulling the trigger again.
CAUTION
If the L-side of push button is pressed for reverse bit
rotation, the stopper cannot be used.
Stopper
Speed control dial
Low speed
Switch trigger
2. Drilling
○ When drilling, start the drill slowly, and gradually
increasing speed as you drill.
○ Always apply pressure in a straight line with the bit. Use
enough pressure to keep drilling, but do not push hard
enough to stall the motor or defl ect the bit.
○ To minimize stalling or breaking through the material,
reduce pressure on drill and ease the bit through the
last part of the hole.
○ I f the drill stal ls, release the t rigger immed iately, remove
the bit from the work and start again. Do not click the
trigger on and off in an attempt to star t a stalled drill.
This can damage the drill.
○ The larger the drill bit diameter, the larger the reactive
force on your arm.
Be careful not to lose control of the drill because of this
reactive force.
To maintain fi rm control, establish a good foothold,
use side handle, hold the drill tightly with both hands,
and ensure that the drill is vertical to the material being
drilled.
Fig. 11
High
speed
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English
MAINTENANCE AND INSPECTION
1. Inspec ting the drill bits
Since use of an abraded drill bits will cause motor
malfunctioning and degraded effi ciency, replace the
drill bits with a new one or resharpening without delay
when abrasion is noted.
2. Inspecting the mounting screws
Regularly inspect all mounting screws and ensure that
they are properly tightened. Should any of the screws
be loose, retighten them immediately. Failure to do so
could result in serious hazard.
3. Maintenance of the motor
The motor unit winding is the very “hear t” of the power
tool. Exercise due care to ensure the winding does not
become damaged and/or wet with oil or water.
4. Inspec ting the carbon brushes
For your continued safety and electrical shock
protection, carbon brush inspection and replacement
on this tool should ONLY be performed by a Hitachi
Authorized Ser vice Center.
5. Replacing supply cord
If the supply cord of Tool is damaged, the Tool must be
returned to Hitachi Authorized Service Center for the
cord to be replaced.
6. Service parts list
CAUTION
Repair, modifi cation and inspection of Hitachi Power
Tools must be carried out by a Hitachi Authorized
Service Center.
This Pa rts List will be he lpfu l if p resented wi th th e too l to
the Hitachi Authorized Service Center when requesting
repair or other maintenance.
In the operation and maintenance of power tools, the
safety regulations and standards prescribed in each
countr y must be obser ved.
MODIFICATION
Hitachi Power Tools are constantly being improved
and modifi ed to incorporate the latest technological
advancements.
Accordingly, some par ts may be changed without prior
notice.
NOTE
Due to HITACHI’s continuing program of research and
development, the specifi cations herein are subject to
change without prior notice.
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Remarks
No.
Used
No.
Code
36 1 340-587C 1 110V
36 2 340-587E 1 230V
1995-3441M6×25
2 ——— 1
37 608-VVM 1 608VVC2PS2L
36 3 340-587F 1 240V
3 1 321-814 1 13VLRB-D
3 2 319-546 1 13VLRE-N
No.
Item
Remarks
No.
Used
No.
Code
No.
Item
41 3 22- 86 2 1
42 322-853 1
39 ——— 1
40 301-653 3 D4×20
38 322-861 1
3 3 316-280 1 13VLN
4 1 322-857 1
4 2 322-866 1
5939-5561
6322-8511
43 322-854 1
6202DDCMPS2L
7 620-2DD 1
44 321-630 1 100L
8322-8501
45 1 322-517 1 220V-240V
45 2 322-518 1 “GBR (110V)”
9984-1011
10 959 -15 0 1 D6.3 5
47 955-2 03 2
46 999-041 2
11 32 2 -8 4 5 1
12 1 316-3 21 4 D5×4 5
51 3 21-6 31 1 5 5L
49 994-273 1
50 992-635 1
48 ——— 1
12 2 3 22 -8 69 4 D 5×50
52 1 321-634 1 110V-240V
52 2 322-519 1 “GBR (110V)”
13 322- 852 2
15 322 -841 1
16 322- 842 1
14 1 32 2- 858 1
14 2 32 2- 867 1
56 ——— 1
55 953-327 1 D8.8
53 984-750 2 D4×16
54 937-631 1
501 ——— 1
502 ——— 1
503 303-709 1
17 322 -8 40 1
19 322- 847 1 “20 -22”
21 322- 848 1
24 319-5 35 1 D3.5
23 981-328 1
20 ——— 1
18 1 3 22-8 59 1
18 2 3 22-8 68 1
22 306-353 1 S-22
27 322-849 1
25 322-844 1 “11”
26 ——— 1
28 1 322-860 1 D5
31 608-DDM 1 608DDC2PS2L
29 322-846 1
28 2 984-104 1
33 1 360-652C 1 110V
32 939-553 1
30 ——— 1
35 961-672 2 D4×50
34 322-843 1
33 2 360-652E 1 230V
33 3 360-652F 1 240V
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Shinagawa Intercity Tower A, 15-1, Konan 2-chome,
Minato-ku, Tokyo, Japan
609
Code No. C99131514 F
Printed in China
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