HIKOKI DH 52MA User manual

DH 52MA
Handling instructions
00BookDH52MA(SP-CON)UK.indb100BookDH52MA(SP-CON)UK.indb1 2022/06/1510:34:582022/06/1510:34:58

2
1
2
34
00BookDH52MA(SP-CON)UK.indb200BookDH52MA(SP-CON)UK.indb2 2022/06/1510:34:592022/06/1510:34:59

3
56
7
23456
1
n0Bpm
330 min-1 2250 min-1
1200 min-1 210 min-1
8
00BookDH52MA(SP-CON)UK.indb300BookDH52MA(SP-CON)UK.indb3 2022/06/1510:35:002022/06/1510:35:00

4
9
10
00BookDH52MA(SP-CON)UK.indb400BookDH52MA(SP-CON)UK.indb4 2022/06/1510:35:012022/06/1510:35:01

5
11 12
13 14
00BookDH52MA(SP-CON)UK.indb500BookDH52MA(SP-CON)UK.indb5 2022/06/1510:35:012022/06/1510:35:01

6
15
7 mm
17 mm
ⓑ
ⓐ
16
V230 V
P1500 W
n0210–330 min-1
Bpm 1200–2250 min-1
φ
max 52 mm
φ
max 160 mm
kg 11.8 kg
00BookDH52MA(SP-CON)UK.indb600BookDH52MA(SP-CON)UK.indb6 2022/06/1510:35:022022/06/1510:35:02

7
300 mm : 313466 (D <35)
313467 (D >38)
313464
944477
313465
930515
321813 313468
12.7 mm : 313469
19.0 mm : 313470
D
956009 (D <35)
955165 (D >38)
00BookDH52MA(SP-CON)UK.indb700BookDH52MA(SP-CON)UK.indb7 2022/06/1510:35:032022/06/1510:35:03

8
313477 313479
W50 × 400 mm : 313475
400 mm : 313476
313478 313479
320859
318085
150 mm
280 mm : 313471
400 mm : 313472
280 mm : 313473
400 mm : 313474
30 g : 981840
971786
949859
333227
338238
949556
337577
330209
378308
376577
00BookDH52MA(SP-CON)UK.indb800BookDH52MA(SP-CON)UK.indb8 2022/06/1510:35:032022/06/1510:35:03

9
c) Prevent unintentional starting. Ensure the
switch is in the off-position before connecting
to power source and/or battery pack, picking up
or carrying the tool.
Carrying power tools with your finger 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 and clothing away
from moving parts.
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 used.
Use of dust collection can reduce dust-related
hazards.
h) Do not let familiarity gained from frequent use
of tools allow you to become complacent and
ignore tool safety principles.
A careless action can cause severe injury within a
fraction of a second.
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 remove the battery pack, if detachable, 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 tools are dangerous in the hands of untrained
users.
e) Maintain power tools and accessories. Check
for misalignment or binding of moving parts,
breakage of parts and any other condition
that may affect the power toolʼs operation. If
damaged, have the power tool repaired before
use.
Many accidents are caused by poorly maintained
power tools.
f) Keep cutting 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 different from
those intended could result in a hazardous situation.
GENERAL POWER TOOL SAFETY
WARNINGS
WARNING
Read all safety warnings, instructions, illustrations and
specifications provided with this power tool.
Failure to follow all instructions listed below may result in
electric shock, fire 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 area safety
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
flammable 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 outlet. Never
modify the plug in any way. Do not use any
adapter plugs with earthed (grounded) power
tools.
Unmodified plugs and matching outlets will reduce
risk of electric shock.
b) Avoid body contact 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 influence of drugs, alcohol or
medication.
A moment of inattention while operating power tools
may result in serious personal injury.
b) Use personal protective equipment. Always
wear eye protection.
Protective equipment such as a dust mask, non-skid
safety shoes, hard hat or hearing protection used for
appropriate conditions will reduce personal injuries.
00BookDH52MA(SP-CON)UK.indb900BookDH52MA(SP-CON)UK.indb9 2022/06/1510:35:032022/06/1510:35:03

10
h) Keep handles and grasping surfaces dry, clean
and free from oil and grease.
Slippery handles and grasping surfaces do not
allow for safe handling and control of the tool in
unexpected situations.
5) Service
a) Have your power tool serviced by a qualified
repair person using only identical replacement
parts.
This will ensure that the safety of the power tool is
maintained.
PRECAUTION
Keep children and infirm persons away.
When not in use, tools should be stored out of reach of
children and infirm persons.
ROTARY HAMMER SAFETY
WARNINGS
1) Safety instructions for all operations
a) Wear ear protectors
Exposure to noise can cause hearing loss.
b) Use auxiliary handle(s), if supplied with the tool.
Loss of control can cause personal injury.
c) Hold the 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.
2) Safety instructions when using long drill bits with
rotary hammers
a) Always start drilling at low speed and with the
bit tip in contact with the workpiece.
At higher speeds, the bit is likely to bend if allowed
to rotate freely without contacting the workpiece,
resulting in personal injury.
b) Apply pressure only in direct line with the bit
and do not apply excessive pressure.
Bits can bend causing breakage or loss of control,
resulting in personal injury.
ADDITIONAL SAFETY WARNINGS
1. Ensure that the power source to be utilized conforms
to the power requirements specified on the product
nameplate.
2. 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. 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. Do not touch the bit during or immediately after
operation. The bit becomes very hot during operation
and could cause serious burns.
5. Before starting to break, chip or drill into a wall, floor or
ceiling, thoroughly confirm that such items as electric
cables or conduits are not buried inside.
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. Wear a dust mask.
Do not inhale the harmful dusts generated in drilling or
chiseling operation. The dust can endanger the health of
yourself and bystanders.
8. Mounting the tool
○To prevent accidents, make sure to turn the switch off
and disconnect the plug from the receptacle.
○When using tools such as bull points, drill bits, etc.,
make sure to use the genuine parts designated by our
company.
○Clean the shank portion of the drill bit. Then smear the
shank portion with the grease or machine oil.
9. The rotation speed cannot be changed by pressing the
rotation speed selector switch while the motor is rotating.
To change speeds, switch offthe tool first.
10. RCD
The use of a residual current device with a rated residual
current of 30 mA or less at all times is recommended.
11. Make sure to securely hold the tool as shown in Fig. 16
during operation.
NAMES OF PARTS (Fig. 1–Fig. 16)
Drill bit Wing bolt
Stopper Band
Selector lever Handle bolt
Switch trigger Mount
Handle Band attachment area
Nameplate Taper shank adapter
Dial Drill bit (Taper shank)
Brush cap
(Inside the Tail cover) Cotter
Set screw (Under the
Tail cover) Core bit shank
Tail cover Core bit
Housing Guide plate
Side handle Center pin
Grip Core bit tip
Front cap Carbon brush
Grease
SYMBOLS
WARNING
The following show symbols used for the machine.
Be sure that you understand their meaning before
use.
DH52MA: Rotary Hammer
To reduce the risk of injury, user must read
instruction manual
Only for EU countries
Do not dispose of electric tools together with
household waste material!
In observance of European Directive
2012/19/EU on waste electrical and electronic
equipment and its implementation in
accordance with national law, electric tools
that have reached the end of their life must
be collected separately and returned to an
environmentally compatible recycling facility.
00BookDH52MA(SP-CON)UK.indb1000BookDH52MA(SP-CON)UK.indb10 2022/06/1510:35:032022/06/1510:35:03

11
V
Rated voltage
Ensure that the power source to be utilized
conforms to the power requirements specified
on the product nameplate.
PPower Input
n0No-load speed
Bpm Full-load impact rate
φ
max Drilling diameter, max.
kg
Weight
(According to EPTA-Procedure 01/2014)
Drill bit
Core bit
Adjustment of the tool position function
Hammering only function
Rotation and hammering function
Switching ON
Switching OFF
Disconnect mains plug from electrical outlet
Class II tool
SDS max shank
STANDARD ACCESSORIES
In addition to the main unit (1 unit), the package
contains the accessories listed in the below.
○Plastic case ................................................................ 1
○Side handle ................................................................. 1
○Hammer Grease A ..................................................... 1
Standard accessories are subject to change without notice.
APPLICATIONS
Rotation and hammering function
○Drilling anchor holes
○Drilling holes in concrete
Hammering only function
○Crushing concrete, chipping, digging, and squaring
(Some applications need optional accessories)
SPECIFICATIONS
The specifications of this machine are listed in the Table on
page 6.
NOTE
Due to HiKOKI’s continuing program of research and
development, the specifications herein are subject to
change without prior notice.
MOUNTING AND OPERATION
Action Figure Page
Inserting SDS-max tools 2 2
Removing SDS-max tools 3 2
Changing tool direction 4 2
Selecting the operating mode 5 3
Switching on and off63
Speed change*173
Install the stopper 8 3
Installing the side handle 9 4
Using tapershank adapter 10 4
Removing tapershank adapter 11 5
Mounting core bit 12 5
Mounting guide plate and center pin 13 5
Replacing carbon brushes 15 6
Selecting accessories*2– 7, 8
*1 The speed on dial 5 and 6 is almost the same, but it is not
malfunction.
*2 For detailed information regarding each tool, contact a
HiKOKI authorized service center.
Operate this Rotary Hammer by utilizing its own weight. The
performance will not be better even if it is pressed or thrust
forcibly against the work surface.
Hold this Rotary Hammer with a force just sufficient to
counteract the reaction.
Warming up (Fig. 14)
The grease lubrication system in this unit may require
warming up in cold regions.
Position the end of the bit so makes contact with the
concrete, turn on the switch and perform the warming
up operation. Make sure that a hitting sound is produced
and then use the unit.
CAUTION
When the warming up operation is performed, hold the
side handle and the main body securely with both hands
to maintain a secure grip and be careful not to twist your
body by the jammed drill bit.
GREASE REPLACEMENT
This Rotary Hammer is of full air-tight construction to protect
against dust and to prevent lubricant leakage.
Therefore, this Rotary Hammer can be used without
lubrication for long periods. Replace the grease as described
below.
Grease Replacement Period
After purchase, replace grease after every 6 months of
usage. Ask for grease replacement at the nearest authorized
Service Center.
MAINTENANCE AND INSPECTION
1. Inspecting the tool bits
Since use of a dull tool will cause motor malfunctioning
and degraded efficiency, replace the tool bit with new
ones or resharpen them without delay when abrasion is
noted.
00BookDH52MA(SP-CON)UK.indb1100BookDH52MA(SP-CON)UK.indb11 2022/06/1510:35:042022/06/1510:35:04

12
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 “heart” of the power
tool.
Exercise due care to ensure the winding does not
become damaged and/or wet with oil or water.
4. Inspecting the carbon brushes (Fig. 15)
The Motor employs carbon brushes which are
consumable parts. When they become worn to or near
the “wear limit” ⓐ, it results in motor trouble.
When an auto-stop carbon brush is equipped, the motor
will stop automatically. At that time, replace both carbon
brushes with new ones which have the same carbon
brush Numbers ⓑshown in the Fig. 15. In addition,
always keep carbon brushes clean and ensure that they
slide freely within the brush holders.
5. Replacing carbon brushes (Fig. 15)
Loosen the two set screws and remove the tail cover.
Remove the brush caps and carbon brushes. After
replacing the carbon brushes, do not forget to tighten the
brush caps securely and to install the tail cover.
6. Replacing supply cord
If the replacement of the supply cord is necessary, this
has to be done by the manufacturer of this agent in order
to avoid a safety hazard.
CAUTION
In the operation and maintenance of power tools, the
safety regulations and standards prescribed in each
country must be observed.
GUARANTEE
We guarantee HiKOKI Power Tools in accordance with
statutory/country specific regulation. This guarantee does
not cover defects or damage due to misuse, abuse, or
normal wear and tear. In case of complaint, please send
the Power Tool, undismantled, with the GUARANTEE
CERTIFICATE found at the end of this Handling instruction,
to a HiKOKI Authorized Service Center.
IMPORTANT
Correct connection of the plug
The wires of the main lead are coloured in accordance
with the following code:
Blue: — Neutral
Brown: — Live
As the colours of the wires in the main lead of this tool may
not correspond with the coloured markings identifying the
terminals in your plug proceed as follows:
The wire coloured blue must be connected to the terminal
marked with the letter N or coloured black. The wire
coloured brown must be connected to the terminal marked
with the letter L or coloured red. Neither core must be
connected to the earth terminal.
NOTE:
This requirement is provided according to BRITISH
STANDARD 2769: 1984.
Therefore, the letter code and colour code may not be
applicable to other markets except The United Kingdom.
Information concerning airborne noise and vibration
The measured values were determined according to
EN62841 and declared in accordance with ISO 4871.
Measured A-weighted sound power level: 108 dB (A)
Measured A-weighted sound pressure level: 97 dB (A)
Uncertainty K: 3 dB (A).
Wear hearing protection.
Vibration total values (triax vector sum) determined
according to EN62841.
Hammer drilling into concrete:
Vibration emission value ah, HD = 15.1 m/s2
Uncertainty K = 1.5 m/s2
Equivalent chiselling value:
Vibration emission value ah, CHeq = 10.8 m/s2
Uncertainty K = 1.5 m/s2
The declared vibration total value and the declared noise
emission value have been measured in accordance with a
standard test method and may be used for comparing one
tool with another.
They may also be used in a preliminary assessment of
exposure.
WARNING
○The vibration and noise emission during actual use
of the power tool can differ from the declared total
value depending on the ways in which the tool is used
especially what kind of workpiece is processed; and
○Identify safety measures to protect the operator that
are based on an estimation of exposure in the actual
conditions of use (taking account of all parts of the
operating cycle such as the times when the tool is
switched offand when it is running idle in addition to the
trigger time).
NOTE
Due to HiKOKI’s continuing program of research and
development, the specifications herein are subject to
change without prior notice.
Information for power supply system to be used with
electric tools provided with rated voltage 230 V~
Switching operations of electric apparatus cause voltage
fluctuations.
The operation of this electric tool under unfavorable mains
conditions can have adverse effects to the operation of other
electric apparatus.
With a mains impedance equal or less than 0.327 Ohms
there will probably be no negative effects.
Usually, the maximum permissible mains impedance will
not be exceeded when the branch to the power outlet is fed
from a junction box with a service capacity of 25 ampere or
higher.
In case of power failure, or when the power plug is pulled
out, immediately return the switch to OFF position. This
prevents an uncontrolled restart.
00BookDH52MA(SP-CON)UK.indb1200BookDH52MA(SP-CON)UK.indb12 2022/06/1510:35:042022/06/1510:35:04

13
GUARANTEE CERTIFICATE
Model No.
Serial No.
Date of Purchase
Customer Name and Address
Dealer Name and Address
(Please stamp dealer name and address)
Hikoki Power Tools (U.K.) Ltd.
25 Majestic Road, Southampton, SO16 OYT, United Kingdom
Tel: [phone]
Fax: [phone]
URL: http://www.hikoki-powertools.uk
00BookDH52MA(SP-CON)UK.indb1300BookDH52MA(SP-CON)UK.indb13 2022/06/1510:35:042022/06/1510:35:04

14
00BookDH52MA(SP-CON)UK.indb1400BookDH52MA(SP-CON)UK.indb14 2022/06/1510:35:042022/06/1510:35:04

15
EC DECLARATION OF CONFORMITY
We declare under our sole responsibility that Rotary Hammer, identified by type and specific identification code *1), is
in conformity with all relevant requirements of the directives *2) and standards *3). Technical file at *4) – See below.
The European Standard Manager at the representative office in Europe is authorized to compile the technical file.
The declaration is applicable to the product affixed CE marking.
*1) DH52MA C361948M
*2) 2006/42/EC, 2014/30/EU, 2011/65/EU
*3) EN62841-1:2015
EN62841-2-6:2020+A11:2020
EN55014-1:2006+A1:2009+A2:2011
EN55014-2:1997+A1:2001+A2:2008
EN61000-3-2:2014
EN61000-3-11:2000
*4) Representative office in Europe
Hikoki Power Tools Deutschland GmbH
Siemensring 34, 47877 Willich, Germany
Head office in Japan
Koki Holdings Co., Ltd.
Shinagawa Intercity Tower A, 15-1, Konan 2-chome,
Minato-ku, Tokyo, Japan
31. 8. 2022
Akihisa Yahagi
European Standard Manager
31. 8. 2022
Osamu Kawanobe
General Manager,
Quality Assurance Division
00BookDH52MA(SP-CON)UK.indb1500BookDH52MA(SP-CON)UK.indb15 2022/06/1510:35:052022/06/1510:35:05

208
Code No. C99744153 M
Printed in China
DECLARATION OF CONFORMITY
We declare under our sole responsibility that Rotary Hammer, identified by type and specific identification code *1), is
in conformity with all relevant requirements of the UK regulations *2) and Designated standards *3). Technical file at
*4) – See below.
This declaration is applicable to the product affixed UKCA marking.
*1) DH52MA C361948M
*2) S.I. 2008/1597, S.I. 2016/1091, S.I. 2012/3032
*3) EN62841-1:2015
EN62841-2-6:2020+A11:2020
EN55014-1:2006+A1:2009+A2:2011
EN55014-2:1997+A1:2001+A2:2008
EN61000-3-2:2014
EN61000-3-11:2000
*4) Importer and authorized person to compile the technical file
Hikoki Power Tools (U.K.) Ltd.
25 Majestic Road, Southampton, SO16 OYT,
United Kingdom
Head office in Japan
Koki Holdings Co., Ltd.
Shinagawa Intercity Tower A, 15-1, Konan 2-chome,
Minato-ku, Tokyo, Japan
31. 8. 2022
Osamu Kawanobe
General Manager,
Quality Assurance Division
00BookDH52MA(SP-CON)UK.indb1600BookDH52MA(SP-CON)UK.indb16 2022/06/1510:35:052022/06/1510:35:05