Bosch Professional GWX 18V-8 User manual

Robert Bosch Power Tools GmbH
70538 Stuttgart
GERMANY
www.bosch-pt.com
1 609 92A 51E (2019.07) O / 352
de Originalbetriebsanleitung
en Original instructions
fr Notice originale
es Manual original
pt Manual original
it Istruzioni originali
nl Oorspronkelijke gebruiksaanwijzing
da Original brugsanvisning
sv Bruksanvisning i original
no Original driftsinstruks
fi Alkuperäiset ohjeet
el Πρωτότυπο οδηγιών χρήσης
tr Orijinal işletme talimatı
pl Instrukcja oryginalna
cs Původní návod k používání
sk Pôvodný návod na použitie
hu Eredeti használati utasítás
ru Оригинальное руководство по
эксплуатации
uk Оригінальна інструкція з
експлуатації
kk Пайдалану нұсқаулығының
түпнұсқасы
ro Instrucțiuni originale
bg Оригинална инструкция
mk Оригинално упатство за работа
sr Originalno uputstvo za rad
sl Izvirna navodila
hr Originalne upute za rad
et Algupärane kasutusjuhend
lv Instrukcijas oriģinālvalodā
lt Originali instrukcija
ko 사용 설명서 원본
ar   
fa   
1 609 92A 51E
GWX 18V-8 Professional

| 3
6 082 850 6DX
L-BOXX 136
1 600 A01 2G0
Bosch Power Tools 1 609 92A 51E | (29.07.2019)

4 |
(1)
(2) (3) (4) (5)
(6)
(7)
(8)
(9)
(10)
(11)
(12)
1 609 92A 51E | (29.07.2019) Bosch Power Tools

| 5
GWX 18V - 8
(8)
(13)
(14)
(15)
(19) (20)
(21) (22)
(23)
(24)
(25)
(26)
A
B
C
(16)
(17)
(18)
Bosch Power Tools 1 609 92A 51E | (29.07.2019)

16 | English
Wartung und Service
Wartung und Reinigung
uNehmen Sie den Akku vor allen Arbeiten am Elektro-
werkzeug (z.B. Wartung, Werkzeugwechsel etc.) so-
wie bei dessen Transport und Aufbewahrung aus dem
Elektrowerkzeug. Bei unbeabsichtigtem Betätigen des
Ein-/Ausschalters besteht Verletzungsgefahr.
uHalten Sie das Elektrowerkzeug und die Lüftungs-
schlitze sauber, um gut und sicher zu arbeiten.
Lagern und behandeln Sie das Zubehör sorgfältig.
Kundendienst und Anwendungsberatung
Der Kundendienst beantwortet Ihre Fragen zu Reparatur und
Wartung Ihres Produkts sowie zu Ersatzteilen. Explosions-
zeichnungen und Informationen zu Ersatzteilen finden Sie
auch unter: www.bosch-pt.com
Das Bosch-Anwendungsberatungs-Team hilft Ihnen gerne
bei Fragen zu unseren Produkten und deren Zubehör.
www.powertool-portal.de, das Internetportal für Handwer-
ker und Heimwerker.
Geben Sie bei allen Rückfragen und Ersatzteilbestellungen
bitte unbedingt die 10-stellige Sachnummer laut Typen-
schild des Produkts an.
Deutschland
Robert Bosch Power Tools GmbH
Servicezentrum Elektrowerkzeuge
Zur Luhne 2
37589 Kalefeld – Willershausen
Unter www.bosch-pt.de können Sie online Ersatzteile be-
stellen oder Reparaturen anmelden.
Kundendienst: Tel.: [phone]
Fax: [phone]
E-Mail: [email protected]
Anwendungsberatung:
Tel.: [phone]
Fax: [phone]
E-Mail: [email protected]
Österreich
Unter www.bosch-pt.at können Sie online Ersatzteile bestel-
len.
Tel.: [phone]
Fax: [phone]
E-Mail: [email protected]
Luxemburg
Tel.: [phone]
Fax: [phone]
E-Mail: [email protected]
Schweiz
Unter www.bosch-pt.com/ch/de können Sie online Ersatz-
teile bestellen.
Tel.: [phone]
Fax: [phone]
E-Mail: [email protected]
Transport
Die enthaltenen Li-Ionen-Akkus unterliegen den Anforderun-
gen des Gefahrgutrechts. Die Akkus können durch den Be-
nutzer ohne weitere Auflagen auf der Straße transportiert
werden.
Beim Versand durch Dritte (z.B.: Lufttransport oder Spediti-
on) sind besondere Anforderungen an Verpackung und
Kennzeichnung zu beachten. Hier muss bei der Vorbereitung
des Versandstückes ein Gefahrgut-Experte hinzugezogen
werden.
Versenden Sie Akkus nur, wenn das Gehäuse unbeschädigt
ist. Kleben Sie offene Kontakte ab und verpacken Sie den Ak-
ku so, dass er sich nicht in der Verpackung bewegt. Bitte be-
achten Sie auch eventuelle weiterführende nationale Vor-
schriften.
Entsorgung
Elektrowerkzeuge, Akkus, Zubehör und Verpa-
ckungen sollen einer umweltgerechten Wieder-
verwertung zugeführt werden.
Werfen Sie Elektrowerkzeuge und Akkus/Batte-
rien nicht in den Hausmüll!
Nur für EU-Länder:
Gemäß der europäischen Richtlinie 2012/19/EU müssen
nicht mehr gebrauchsfähige Elektrowerkzeuge und gemäß
der europäischen Richtlinie 2006/66/EG müssen defekte
oder verbrauchte Akkus/Batterien getrennt gesammelt und
einer umweltgerechten Wiederverwendung zugeführt wer-
den.
Akkus/Batterien:
Li-Ion:
Bitte beachten Sie die Hinweise im Abschnitt Transport (sie-
he „Transport“, Seite16).
English
Safety instructions
General Power Tool Safety Warnings
WARNING Read all safety warnings and all in-
structions. Failure to follow the
warnings and instructions 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 (cord-
less) power tool.
Work area safety
uKeep work area clean and well lit. Cluttered or dark
areas invite accidents.
1 609 92A 51E | (29.07.2019) Bosch Power Tools

English | 17
uDo 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.
uKeep children and bystanders away while operating a
power tool. Distractions can cause you to lose control.
Electrical safety
uPower 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.
uAvoid body contact with earthed or grounded sur-
faces, such as pipes, radiators, ranges and refrigerat-
ors. There is an increased risk of electric shock if your
body is earthed or grounded.
uDo not expose power tools to rain or wet conditions.
Water entering a power tool will increase the risk of elec-
tric shock.
uDo not abuse the cord. Never use the cord for carry-
ing, 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.
uWhen operating a power tool outdoors, use an exten-
sion cord suitable for outdoor use. Use of a cord suit-
able for outdoor use reduces the risk of electric shock..
uIf operating a power tool in a damp location is un-
avoidable, use a residual current device (RCD) protec-
ted supply. Use of an RCD reduces the risk of electric
shock.
Personal safety
uStay 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 inatten-
tion while operating power tools may result in serious per-
sonal injury.
uUse personal protective equipment. Always wear eye
protection. Protective equipment such as dust mask,
non-skid safety shoes, hard hat, or hearing protection
used for appropriate conditions will reduce personal in-
juries.
uPrevent 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 en-
ergising power tools that have the switch on invites acci-
dents.
uRemove 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 in-
jury.
uDo not overreach. Keep proper footing and balance at
all times. This enables better control of the power tool in
unexpected situations.
uDress properly. Do not wear loose clothing or jew-
ellery. Keep your hair, clothing and gloves away from
moving parts. Loose clothes, jewellery or long hair can
be caught in moving parts.
uIf devices are provided for the connection of dust ex-
traction and collection facilities, ensure these are con-
nected and properly used. Use of dust collection can re-
duce dust-related hazards.
Power tool use and care
uDo 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 de-
signed.
uDo 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.
uDisconnect 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.
uStore 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.
uMaintain power tools. Check for misalignment or bind-
ing of moving parts, breakage of parts and any other
condition that may affect the power tool’s operation.
If damaged, have the power tool repaired before use.
Many accidents are caused by poorly maintained power
tools.
uKeep cutting tools sharp and clean. Properly main-
tained cutting tools with sharp cutting edges are less
likely to bind and are easier to control.
uUse the power tool, accessories and tool bits etc. in
accordance with these instructions, taking into ac-
count the working conditions and the work to be per-
formed. Use of the power tool for operations different
from those intended could result in a hazardous situation.
Battery tool use and care
uRecharge only with the charger specified by the manu-
facturer. A charger that is suitable for one type of bat-
tery pack may create a risk of fire when used with another
battery pack.
uUse power tools only with specifically designated bat-
tery packs. Use of any other battery packs may create a
risk of injury and fire.
uWhen battery pack is not in use, keep it away from
other metal objects, like paper clips, coins, keys,
nails, screws or other small metal objects, that can
make a connection from one terminal to another.
Shorting the battery terminals together may cause burns
or a fire.
uUnder abusive conditions, liquid may be ejected from
the battery; avoid contact. If contact accidentally oc-
Bosch Power Tools 1 609 92A 51E | (29.07.2019)

18 | English
curs, flush with water. If liquid contacts eyes, addi-
tionally seek medical help. Liquid ejected from the bat-
tery may cause irritation or burns.
Service
uHave 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.
Safety information for the angle grinder
Safety Warnings common for Grinding, Sanding, Wire
Brushing or Abrasive Cutting Off operations
uThis power tool is intended to function as a grinder,
sander, wire brush or cut-off tool. Read all safety
warnings, instructions, illustrations and specifica-
tions provided with this power tool. Failure to follow all
instructions listed below may result in electric shock, fire
and/or serious injury.
uOperations such as polishing are not recommended to
be performed with this power tool. Operations for
which the power tool was not designed may create a haz-
ard and cause personal injury.
uDo not use accessories which are not specifically de-
signed and recommended by the tool manufacturer.
Just because the accessory can be attached to your
power tool, it does not assure safe operation.
uThe rated speed of the accessory must be at least
equal to the maximum speed marked on the power
tool. Accessories running faster than their rated speed
can break and fly apart.
uThe outside diameter and the thickness of your ac-
cessory must be within the capacity rating of your
power tool. Incorrectly sized accessories cannot be ad-
equately guarded or controlled.
uThreaded mounting of accessories must match the
grinder spindle thread. For accessories mounted by
flanges, the arbour hole of the accessory must fit the
locating diameter of the flange. Accessories that do not
match the mounting hardware of the power tool will run
out of balance, vibrate excessively and may cause loss of
control.
uDo not use a damaged accessory. Before each use in-
spect the accessory such as abrasive wheels for chips
and cracks, backing pad for cracks, tear or excess
wear, wire brush for loose or cracked wires. If power
tool or accessory is dropped, inspect for damage or in-
stall an undamaged accessory. After inspecting and
installing an accessory, position yourself and bystand-
ers away from the plane of the rotating accessory and
run the power tool at maximum no load speed for one
minute. Damaged accessories will normally break apart
during this test time.
uWear personal protective equipment. Depending on
application, use face shield, safety goggles or safety
glasses. As appropriate, wear dust mask, hearing pro-
tectors, gloves and workshop apron capable of stop-
ping small abrasive or workpiece fragments. The eye
protection must be capable of stopping flying debris gen-
erated by various operations . The dust mask or respir-
ator must be capable of filtrating particles generated by
your operation. Prolonged exposure to high intensity
noise may cause hearing loss.
uKeep bystanders a safe distance away from work area.
Anyone entering the work area must wear personal
protective equipment. Fragments of workpiece or of a
broken accessory may fly away and cause injury beyond
immediate area of operation.
uHold the power tool by insulated gripping surfaces
only, when performing an operation where the cutting
accessory may contact hidden wiring. Cutting access-
ory contacting a "live" wire may make exposed metal
parts of the power tool "live" and could give the operator
an electric shock.
uNever lay the power tool down until the accessory has
come to a complete stop. The spinning accessory may
grab the surface and pull the power tool out of your con-
trol.
uDo not run the power tool while carrying it at your
side. Accidental contact with the spinning accessory
could snag your clothing, pulling the accessory into your
body.
uRegularly clean the power tool’s air vents. The motor’s
fan will draw the dust inside the housing and excessive
accumulation of powdered metal may cause electrical
hazards.
uDo not operate the power tool near flammable materi-
als. Sparks could ignite these materials.
uDo not use accessories that require liquid coolants.
Using water or other liquid coolants may result in electro-
cution or shock.
Kickback and Related Warnings
Kickback is a sudden reaction to a pinched or snagged rotat-
ing wheel, backing pad, brush or any other accessory. Pinch-
ing or snagging causes rapid stalling of the rotating access-
ory which in turn causes the uncontrolled power tool to be
forced in the direction opposite of the accessory’s rotation
at the point of the binding.
For example, if an abrasive wheel is snagged or pinched by
the workpiece, the edge of the wheel that is entering into the
pinch point can dig into the surface of the material causing
the wheel to climb out or kick out. The wheel may either
jump toward or away from the operator, depending on direc-
tion of the wheel’s movement at the point of pinching. Abras-
ive wheels may also break under these conditions.
Kickback is the result of power tool misuse and/or incorrect
operating procedures or conditions and can be avoided by
taking proper precautions as given below.
uMaintain a firm grip on the power tool and position
your body and arm to allow you to resist kickback
forces. Always use auxiliary handle, if provided, for
maximum control over kickback or torque reaction
during start-up. The operator can control torque reac-
tions or kickback forces, if proper precautions are taken.
1 609 92A 51E | (29.07.2019) Bosch Power Tools

English | 19
uNever place your hand near the rotating accessory.
Accessory may kickback over your hand.
uDo not position your body in the area where power
tool will move if kickback occurs. Kickback will propel
the tool in direction opposite to the wheel’s movement at
the point of snagging.
uUse special care when working corners, sharp edges
etc. Avoid bouncing and snagging the accessory.
Corners, sharp edges or bouncing have a tendency to
snag the rotating accessory and cause loss of control or
kickback.
uDo not attach a saw chain woodcarving blade or
toothed saw blade. Such blades create frequent kick-
back and loss of control.
Safety Warnings specific for Grinding and Abrasive
Cutting-Off operations
uUse only wheel types that are recommended for your
power tool and the specific guard designed for the se-
lected wheel. Wheels for which the power tool was not
designed cannot be adequately guarded and are unsafe.
uThe grinding surface of centre depressed wheels must
be mounted below the plane of the guard lip. An im-
properly mounted wheel that projects through the plane
of the guard lip cannot be adequately protected.
uThe guard must be securely attached to the power tool
and positioned for maximum safety, so the least
amount of wheel is exposed towards the operator.
The guard helps to protect operator from broken wheel
fragments, accidental contact with wheel and sparks that
could ignite clothing.
uWheels must be used only for recommended applica-
tions. For example: do not grind with the side of cut-
off wheel. Abrasive cut-off wheels are intended for peri-
pheral grinding, side forces applied to these wheels may
cause them to shatter.
uAlways use undamaged wheel flanges that are of cor-
rect size and shape for your selected wheel. Proper
wheel flanges support the wheel thus reducing the pos-
sibility of wheel breakage. Flanges for cut-off wheels may
be different from grinding wheel flanges.
uDo not use worn down wheels from larger power
tools. Wheel intended for larger power tool is not suit-
able for the higher speed of a smaller tool and may burst.
Additional Safety Warnings specific for Abrasive Cutting
Off operations
uDo not “jam” the cut-off wheel or apply excessive
pressure. Do not attempt to make an excessive depth
of cut. Overstressing the wheel increases the loading
and susceptibility to twisting or binding of the wheel in
the cut and the possibility of kickback or wheel breakage.
uDo not position your body in line with and behind the
rotating wheel. When the wheel, at the point of opera-
tion, is moving away from your body, the possible kick-
back may propel the spinning wheel and the power tool
directly at you.
uWhen wheel is binding or when interrupting a cut for
any reason, switch off the power tool and hold the
power tool motionless until the wheel comes to a com-
plete stop. Never attempt to remove the cut-off wheel
from the cut while the wheel is in motion otherwise
kickback may occur. Investigate and take corrective ac-
tion to eliminate the cause of wheel binding.
uDo not restart the cutting operation in the workpiece.
Let the wheel reach full speed and carefully re-enter
the cut. The wheel may bind, walk up or kickback if the
power tool is restarted in the workpiece.
uSupport panels or any oversized workpiece to minim-
ize the risk of wheel pinching and kickback. Large
workpieces tend to sag under their own weight. Supports
must be placed under the workpiece near the line of cut
and near the edge of the workpiece on both sides of the
wheel.
uUse extra caution when making a “pocket cut” into ex-
isting walls or other blind areas. The protruding wheel
may cut gas or water pipes, electrical wiring or objects
that can cause kickback.
Safety Warnings specific for Sanding operations
uDo not use excessively oversized sanding disc paper.
Follow manufacturers recommendations, when select-
ing sanding paper. Larger sanding paper extending bey-
ond the sanding pad presents a laceration hazard and
may cause snagging, tearing of the disc, or kickback.
Safety Warnings specific for Wire Brushing operations
uBe aware that wire bristles are thrown by the brush
even during ordinary operation. Do not overstress the
wires by applying excessive load to the brush The wire
bristles can easily penetrate light clothing and/or skin.
uIf the use of a guard is recommended for wire brush-
ing, do not allow any interference of the wire wheel or
brush with the guard. Wire wheel or brush may expand
in diameter due to work load and centrifugal forces.
Additional safety information
Wear safety goggles.
uUse suitable detectors to determine if there are hid-
den supply lines or contact the local utility company
for assistance. Contact with electric cables can cause
fire and electric shock. Damaging gas lines can lead to ex-
plosion. Breaking water pipes causes property damage.
uDo not touch grinding and cutting discs until they have
cooled down. The discs can become very hot while work-
ing.
uRelease the On/Off switch and set it to the Off posi-
tion when the power supply is interrupted, e.g. when
the battery pack is removed. This prevents uncontrolled
restarting.
Bosch Power Tools 1 609 92A 51E | (29.07.2019)

20 | English
uSecure the workpiece. A workpiece clamped with
clamping devices or in a vice is held more secure than by
hand.
uDo not open the battery. There is a risk of short-circuit-
ing.
Protect the battery against heat, e.g. against
continuous intense sunlight, fire, dirt, water
and moisture. There is a risk of explosion and
short-circuiting.
uIn case of damage and improper use of the battery, va-
pours may be emitted. The battery can set alight or ex-
plode. Ensure the area is well ventilated and seek medical
attention should you experience any adverse effects. The
vapours may irritate the respiratory system.
uOnly use the battery with products from the manufac-
turer. This is the only way in which you can protect the
battery against dangerous overload.
uThe battery can be damaged by pointed objects such
as nails or screwdrivers or by force applied externally.
An internal short circuit may occur, causing the battery to
burn, smoke, explode or overheat.
Product Description and
Specifications
Read all the safety and
general instructions. Fail-
ure to observe the safety
and general instructions
may result in electric shock,
fire and/or serious injury.
Please observe the illustrations at the beginning of this oper-
ating manual.
Intended use
The power tool is intended for cutting, roughing and brush-
ing metal and stone materials, as well as making holes in
stone materials using diamond core cutters, without the use
of water.
A special protective guard for cutting must be used when
cutting bonded abrasives.
Sufficient dust extraction must be provided when cutting
stone.
With approved abrasive tools, the power tool can be used for
sanding with sanding discs.
The power tool must not be used to grind concrete.
Product features
The numbering of the product features refers to the diagram
of the power tool on the graphics page.
(1) Unlocking lever for protective guard
(2) Direction of rotation arrow on housing
(3) Lever
(4) LED work light
(5) On/off switch
(6) BatteryA)
(7) Battery release buttonA)
(8) Auxiliary handle (insulated gripping surface)
(9) Protective guard for grinding
(10) X-LOCK grinding disc/flap discA)
(11) Protective guard for cuttingA)
(12) X-LOCK cutting discA)
(13) Handle (insulated gripping surface)
(14) X-LOCK holder
(15) Hand guardA)
(16) X-LOCK backing pad for fibre discsA)
(17) X-LOCK fibre discA)
(18) X-LOCK clip for fibre discsA)
(19) X-LOCK cup brush/disc brushA)
(20) X-LOCK diamond core cutterA)
(21) Button for battery charge indicator (GBA 18V...)A)
(22) Battery charge indicator (GBA 18V...)A)
(23) Button for battery charge indicator (Pro-
CORE18V...)A)
(24) Battery charge indicator (ProCORE18V...)A)
(25) Extraction guard for cutting with a guide blockA)
(26) X-LOCK diamond cutting discA)
A) Accessories shown or described are not included with the
product as standard. You can find the complete selection of
accessories in our accessories range.
Technical data
Angle grinder GWX 18V-8 GWX 18V-8
Article number 3 601 JJ7 1.. 3 601 JJ7 0..
Rated voltage V= 18 18
Rated speedA) min-1 11000 11000
Max. grinding disc diameter mm 115 125
Restart protection ● ●
Weight according to EPTA-Procedure 01:2014A)
– with additional low-vibration auxiliary handle kg 2.1 – 3.1 2.2 – 3.2
1 609 92A 51E | (29.07.2019) Bosch Power Tools

English | 21
Angle grinder GWX 18V-8 GWX 18V-8
– with standard auxiliary handle kg 2.0 – 3.0 2.0 – 3.0
Permitted ambient temperature
– during charging °C 0 to +35 0 to +35
– during operationB) and during storage °C –20 to +50 –20 to +50
Recommended batteries GBA 18V...
ProCORE18V...
GBA 18V...
ProCORE18V...
Recommended chargers GAL 18...
GAX 18...
GAL 36...
GAL 18...
GAX 18...
GAL 36...
A) Depends on battery in use
B) Limited performance at temperatures <0°C
Noise/vibration information
GWX 18V-8 GWX 18V-8
3 601 JJ7 1.. 3 601 JJ7 0..
Noise emission values determined according to EN60745-2-3.
Typically, the A-weighted noise level of the power tool is:
Sound pressure level
Sound power level
Uncertainty K
Wear hearing protection
dB(A)
dB(A)
dB
86
97
3
86
97
3
Vibration total values ah (triax vector sum) and uncertainty K determined according to EN60745-2-3:
Grinding surfaces (roughing):
ah
K
m/s2
m/s2
6.5
1.5
6.5
1.5
Grinding with abrasive disc:
ah
K
m/s2
m/s2
2.5
1.5
2.5
1.5
The vibration level given in these instructions has been
measured in accordance with a standardised measuring pro-
cedure and may be used to compare power tools. It can also
be used for a preliminary estimation of exposure to vibra-
tion.
The stated vibration level applies to the main applications of
the power tool. However, if the power tool is used for differ-
ent applications, with different application tools or poorly
maintained, the vibration level may differ. This can signific-
antly increase the exposure to vibration over the total work-
ing period.
To estimate the exposure to vibration accurately, the times
when the tool is switched off or when it is running but not ac-
tually being used should also be taken into account. This can
significantly reduce the exposure to vibration over the total
working period.
Implement additional safety measures to protect the oper-
ator from the effects of vibration, such as servicing the
power tool and application tools, keeping the hands warm,
and organising workflows correctly.
Fitting
Charging the battery
uUse only the chargers listed in the technical data. Only
these chargers are matched to the lithium-ion battery of
your power tool.
Note: The battery is supplied partially charged. To ensure
full battery capacity, fully charge the battery in the charger
before using your power tool for the first time.
The lithium-ion battery can be charged at any time without
reducing its service life. Interrupting the charging process
does not damage the battery.
The lithium-ion battery is protected against deep discharge
by the "Electronic Cell Protection (ECP)". When the battery
is discharged, the power tool is switched off by means of a
protective circuit: The application tool no longer rotates.
uDo not continue to press the On/Off switch after the
power tool has automatically switched off. The battery
can be damaged.
Bosch Power Tools 1 609 92A 51E | (29.07.2019)

22 | English
Follow the instructions on correct disposal.
Removing the battery
The battery (6) is equipped with two locking levels to pre-
vent the battery from falling out when pushing the battery re-
lease button (7) unintentionally. As long as the battery is in-
serted in the power tool, it is held in position by means of a
spring.
To remove the battery (6), press the release button (7) and
pull the battery forward and out of the power tool. Do not
use force to do this.
Battery charge indicator (battery model GBA
18V...) (see figure A)
The three green LEDs of the battery charge indicator (22) in-
dicate the state of charge of the battery (6). For safety reas-
ons, it is only possible to check the state of charge when the
power tool is at a standstill.
Press the button (21) to display the state of charge. This is
also possible when the battery (6) is removed.
LEDs Capacity
3× continuous green light ≥66%
2× continuous green light ≥33%
1× continuous green light <33%
1× flashing green light Reserve
If no LED lights up after pressing the button (21), then the
battery is defective and must be replaced.
Battery charge indicator (battery model
ProCORE18V...) (see figure B)
The five green LEDs of the battery charge indicator (24) in-
dicate the state of charge of the battery(6). For safety reas-
ons, it is only possible to check the state of charge when the
power tool is not in operation.
Press the button (23) to show the state of charge. This is
also possible when the battery is removed.
LEDs Capacity
5× continuous green light 80−100%
4× continuous green light 60−80%
3× continuous green light 40−60%
2× continuous green light 20−40%
1× continuous green light 5−20%
1× flashing green light 0−5%
If no LED lights up after pressing the button (23), then the
battery is defective and must be replaced.
Fitting protective equipment
uRemove the battery from the power tool before carry-
ing out work on the power tool (e.g. maintenance,
changing tool, etc.). The battery should also be re-
moved for transport and storage. There is risk of injury
from unintentionally pressing the on/off switch.
Note: If the grinding disc breaks during operation or the
holding fixtures on the protective guard/power tool become
damaged, the power tool must be sent to the after-sales ser-
vice immediately; see the "After-Sales Service and Applica-
tion Service" section for addresses.
Protective guard for grinding
Place the protective guard
(9) onto the holder on the
power tool until the coding
cams of the protective
guard are aligned with the
holder. When doing so,
press and hold the unlock-
ing lever (1).
Press the protective guard
(9) onto the spindle collar
until the shoulder of the
protective guard is sitting
on the flange of the power
tool and rotate the protect-
ive guard until it audibly
clicks into place.
Adjust the position of the protective guard (9) to meet the
requirements of the operation. To do this, push the unlock-
ing lever (1) upward and rotate the protective guard (9) into
the required position.
uAlways position the protective guard (9) such that all
three red cams on the unlocking lever (1) engage in
the corresponding openings on the protective guard
(9).
uAdjust the protective guard (9) such that sparking in
the direction of the operator is prevented.
uThe protective guard (9) must only be adjustable
while the unlocking lever (1) is actuated. Otherwise,
the power tool must not be used any more under any
circumstances and must be sent to the after-sales ser-
vice.
Note: The coding cams on the protective guard (9) ensure
that only a protective guard that is suitable for the power
tool can be fitted.
Protective guard for cutting
uAlways use the protective guard for cutting (11) when
cutting bonded abrasives.
uProvide sufficient dust extraction when cutting stone.
The protective guard for cutting (11) is fitted in the same
way as the protective guard for grinding (9).
1 609 92A 51E | (29.07.2019) Bosch Power Tools

English | 23
Extraction guard for cutting with a guide block
The extraction guard for cutting with a guide block (25) is fit-
ted in the same way as the protective guard for grinding (9).
Side handle
uDo not operate your power tool without the side
handle (8).
Screw the side handle (8) on the left or right of the machine
head depending on how your are working.
Low-vibration auxiliary handle
The low-vibration auxiliary
handle reduces vibration,
enabling the tool to be used
safely and more comfort-
ably.
uDo not make any alterations of any kind to the auxili-
ary handle.
Do not continue to use a damaged auxiliary handle.
Hand guard
uAlways fit the hand guard (15) when working with the
cup brush/disc brush (19) or diamond core cutter (20).
Attach the hand guard (15) to the auxiliary handle (8).
Fitting and removing abrasive tools
uRemove the battery from the power tool before carry-
ing out work on the power tool (e.g. maintenance,
changing tool, etc.). The battery should also be re-
moved for transport and storage. There is risk of injury
from unintentionally pressing the on/off switch.
uDo not touch grinding and cutting discs until they have
cooled down. The discs can become very hot while work-
ing.
uOnly use original X-LOCK application tools that carry the
X-LOCK logo. A maintained clamping gauge of max.
1.6mm can only be guaranteed with original X-LOCK ap-
plication tools. A higher clamping gauge can lead to insec-
ure clamping, potentially causing the clamp tool to come
loose.
uX-LOCK application tools do not need additional clamping
flanges or support flanges.
uMake sure that the application tool and the holder are not
deformed and are free from dirt and particles.
Pay attention to the dimensions of the abrasive tools.
Make sure that both X-LOCK catches are open (see figure
below) before fitting the X-LOCK application tool.
If necessary, clean the area between the two X-LOCK
catches.
Fitting the abrasive tool
➊Place the grinding/cutting/flap disc in a central position
on the X-LOCK holder, parallel to the bearing surface
and with the right side facing up.
➋Push the disc into the holder.
➌The disc audibly clicks into place. Do not actuate the
lever (3) when doing so.
(3)
uAfter fitting, check that the edge of the abrasive tool
(➍) is fitted correctly, i.e. is no higher than the refer-
ence surface (➎). If the edge is higher than the refer-
ence surface, either the holder must be cleaned or the
abrasive tool must not be used.
Before removing the grinding/cutting/flap disc: Make
sure that the power tool has come to a complete stop.
Removing the abrasive tool
➊Open the lever (3).
➋The grinding/cutting/flap disc will be released.
➌The grinding/cutting/flap disc can be removed.
(3) (3)
Cup brushes/disc brushes and fibre discs
uAlways fit the hand guard (15) when working with the
cup brush/disc brush or fibre disc.
See the graphics page for fitting instructions.
To remove an application tool, open the lever (3) and re-
move the application tool.
Approved abrasive tools
You can use all the abrasive tools mentioned in these operat-
ing instructions.
Bosch Power Tools 1 609 92A 51E | (29.07.2019)

24 | English
The permissible speed [min-1] or the circumferential speed
[m/s] of the abrasive tools used must at least match the val-
ues given in the table.
It is therefore important to observe the permissible rota-
tional/circumferential speed on the label of the abrasive
tool.
max. [mm] [mm]
D b d [min-1] [m/s]
115
125
7
7
22.2
22.2
11,000
11,000
80
115
125
–
–
–
–
11,000
11,000
80
80
75 30 – 11,000 45
82 – – 11,000 80
Rotating the machine head
uRemove the battery from the power tool before carry-
ing out work on the power tool (e.g. maintenance,
changing tool, etc.). The battery should also be re-
moved for transport and storage. There is risk of injury
from unintentionally pressing the on/off switch.
The machine head can be
rotated in 90° increments.
In this way, the on/off
switch can be brought into
a more favourable handling
position for particular ap-
plications, e.g. for left-
handed tool users.
Completely unscrew the
four screws. Rotate the ma-
chine head carefully, without removing it from the hous-
ing, into the new position. Screw in and retighten the four
screws.
Dust/Chip Extraction
The dust from materials such as lead paint, some types of
wood, minerals and metal can be harmful to human health.
Touching or breathing in this dust can trigger allergic reac-
tions and/or cause respiratory illnesses in the user or in
people in the near vicinity.
Certain dusts, such as oak or beech dust, are classified as
carcinogenic, especially in conjunction with wood treatment
additives (chromate, wood preservative). Materials contain-
ing asbestos may only be machined by specialists.
– Use a dust extraction system that is suitable for the ma-
terial wherever possible.
– Provide good ventilation at the workplace.
– It is advisable to wear a P2 filter class breathing mask.
The regulations on the material being machined that apply in
the country of use must be observed.
uAvoid dust accumulation at the workplace. Dust can
easily ignite.
Operation
Start-up
Inserting the battery
Push the charged battery (6) into the base of the power tool
from the front until the battery is securely locked.
Switching on/off
To start the power tool, push the on/off switch (5) forward.
To lock the on/off switch (5) in position, push the on/off
switch (5) forward and down until it clicks into place.
To switch off the power tool, release the on/off switch (5);
or, if the switch is locked, briefly push the on/off switch (5)
backward and down and then release it.
uAlways check abrasive tools before using them. The
abrasive tool must be fitted properly and be able to
move freely. Carry out a test run for at least one
minute with no load. Do not use abrasive tools that are
damaged, run untrue or vibrate during use. Damaged
abrasive tools can burst apart and cause injuries.
Restart protection
The restart protection feature prevents the power tool from
uncontrolled starting after the power supply to it has been
interrupted.
To restart the tool, set the on/off switch (5) to the off posi-
tion and then switch the power tool on again.
Working Advice
uExercise caution when cutting slots in structural walls;
see the "Information on structural design" section.
uClamp the workpiece if it is not secure under its own
weight.
uDo not load the power tool so heavily that it comes to a
stop.
uIf the power tool has been subjected to a heavy load,
continue to run it at no-load for several minutes to
cool down the accessory.
uDo not use the power tool with a cut-off stand.
If the power tool becomes electrostatically charged, the
built-in electronics will switch the power tool off. Press the
on/off switch (5) again to restart the power tool.
uDo not touch grinding and cutting discs until they have
cooled down. The discs can become very hot while work-
ing.
Rough grinding
uNever use cutting discs for rough grinding.
1 609 92A 51E | (29.07.2019) Bosch Power Tools

English | 25
The best rough grinding results are achieved with a set angle
of 30° to 40°. Move the power tool back and forth with mod-
erate pressure. This will ensure that the workpiece does not
become too hot or discolour and that grooves are not
formed.
Flap Disc
With the flap disc (accessory), curved surfaces and profiles
can be worked. Flap discs have a considerably higher ser-
vice life, lower noise levels and lower sanding temperatures
than conventional sanding sheets.
Cutting Metal
uAlways use the protective guard for cutting (11) when
cutting bonded abrasives.
When carrying out abrasive cutting, use a moderate feed
that is suited to the material being machined. Do not exert
pressure on the cutting disc and do not tilt or swing the
power tool.
Do not attempt to reduce the speed of a cutting disc coming
to a stop by applying pressure from the side.
The power tool must always
work in an up-grinding mo-
tion. Otherwise, there is a
risk that it will be pushed
uncontrolled out of the cut.
For best results when cut-
ting profiles and rectangular
tubing, start at the smallest
cross section.
Cutting stone (see figure
C)
uProvide sufficient dust extraction when cutting stone.
uWear a dust mask.
uThe power tool may be used only for dry cutting/grind-
ing.
For best results when cutting stone, use a diamond cutting
disc.
When using the extraction guard for cutting with a cutting
guide (25), the vacuum cleaner must be approved for vacu-
uming stone dust. Suitable vacuum cleaners are available
from Bosch.
Switch on the power tool
and position it with the
front part of the cutting
guide on the workpiece.
Move the power tool with a
moderate feed motion that
is suited to the material be-
ing machined.
When cutting especially
hard materials such as con-
crete with a high pebble content, the diamond cutting disc
can overheat and become damaged as a result. This is
clearly indicated by circular sparking, rotating with the dia-
mond cutting disc.
If this happens, stop cutting and allow the diamond cutting
disc to cool down by running the power tool for a short time
at maximum speed with no load.
If work is noticeably slower and with circular sparking, this
indicates that the diamond cutting disc that has become
dull. You can resharpen the disc by briefly cutting into abras-
ive material (e.g. lime-sand brick).
Information on structural design
Slots in load-bearing walls are subject to DIN 1053 part 1 or
country-specific regulations. These regulations must be ob-
served under all circumstances. Seek advice from the re-
sponsible structural engineer, architect or construction su-
pervisor before starting work.
Recommendations for optimal handling of the battery
Protect the battery against moisture and water.
Only store the battery only within a temperature range of -20
to 50 °C. Do not leave the battery in your car in the summer,
for example.
Occasionally clean the ventilation slots on the battery using a
soft brush that is clean and dry.
A significantly reduced operating time after charging indic-
ates that the battery has deteriorated and must be replaced.
Follow the instructions on correct disposal.
Maintenance and Service
Maintenance and cleaning
uRemove the battery from the power tool before carry-
ing out work on the power tool (e.g. maintenance,
changing tool, etc.). The battery should also be re-
moved for transport and storage. There is risk of injury
from unintentionally pressing the on/off switch.
uTo ensure safe and efficient operation, always keep
the power tool and the ventilation slots clean.
Store and handle the accessories carefully.
After-Sales Service and Application Service
Our after-sales service responds to your questions concern-
ing maintenance and repair of your product as well as spare
parts. You can find explosion drawings and information on
spare parts at: www.bosch-pt.com
The Bosch product use advice team will be happy to help you
with any questions about our products and their accessor-
ies.
In all correspondence and spare parts orders, please always
include the 10‑digit article number given on the nameplate
of the product.
Australia, New Zealand and Pacific Islands
Robert Bosch Australia Pty. Ltd.
Power Tools
Locked Bag 66
Clayton South VIC 3169
Customer Contact Center
Inside Australia:
Bosch Power Tools 1 609 92A 51E | (29.07.2019)

26 | English
Phone: [phone]
Fax: [phone]
Inside New Zealand:
Phone: [phone]
Fax: [phone]
Outside AU and NZ:
Phone: [phone]
www.bosch-pt.com.au
www.bosch-pt.co.nz
Great Britain
Robert Bosch Ltd. (B.S.C.)
P.O. Box 98
Broadwater Park
North Orbital Road
Denham Uxbridge
UB 9 5HJ
At www.bosch-pt.co.uk you can order spare parts or arrange
the collection of a product in need of servicing or repair.
Tel. Service: [phone]
E-Mail: [email protected]
Ireland
Origo Ltd.
Unit 23 Magna Drive
Magna Business Park
City West
Dublin 24
Tel. Service: [phone]
Fax: [phone]
Republic of South Africa
Customer service
Hotline: [phone]
Gauteng – BSC Service Centre
35 Roper Street, New Centre
Johannesburg
Tel.: [phone]
Fax: [phone]
E-Mail: [email protected]
KZN – BSC Service Centre
Unit E, Almar Centre
143 Crompton Street
Pinetown
Tel.: [phone]
Fax: [phone]
E-Mail: [email protected]
Western Cape – BSC Service Centre
Democracy Way, Prosperity Park
Milnerton
Tel.: [phone]
Fax: [phone]
E-Mail: [email protected]
Bosch Headquarters
Midrand, Gauteng
Tel.: [phone]
Fax: [phone]
E-Mail: [email protected]
Armenia, Azerbaijan, Georgia
Robert Bosch Ltd.
David Agmashenebeli ave. 61
0102 Tbilisi, Georgia
Tel. [phone]
www.bosch.com
Kyrgyzstan, Mongolia, Tajikistan, Turkmenistan,
Uzbekistan
TOO “Robert Bosch” Power Tools, After Sales Service
Muratbaev Ave., 180
050012, Almaty, Kazakhstan
Service Email: [email protected]
Official Website: www.bosch.com, www.bosch-pt.com
Transport
The contained lithium-ion batteries are subject to the Dan-
gerous Goods Legislation requirements. The batteries are
suitable for road-transport by the user without further re-
strictions.
When shipping by third parties (e.g.: by air transport or for-
warding agency), special requirements on packaging and la-
belling must be observed. For preparation of the item being
shipped, consulting an expert for hazardous material is re-
quired.
Dispatch battery packs only when the housing is undam-
aged. Tape or mask off open contacts and pack up the bat-
tery in such a manner that it cannot move around in the
packaging. Please also observe the possibility of more de-
tailed national regulations.
Disposal
Power tools, rechargeable batteries, accessor-
ies and packaging should be sorted for environ-
mental-friendly recycling.
Do not dispose of power tools and batteries/re-
chargeable batteries into household waste!
Only for EU countries:
According to the Directive 2012/19/EU, power tools that
are no longer usable, and according to the Directive
2006/66/EC, defective or used battery packs/batteries,
must be collected separately and disposed of in an environ-
mentally correct manner.
Battery packs/batteries:
Li-ion:
Please observe the notes in the section on transport (see
"Transport", page26).
1 609 92A 51E | (29.07.2019) Bosch Power Tools