Bosch GWS 20-180, GWS 20-230, GWS 24-180, GWS 24-230 User Manual

Robert Bosch Power Tools GmbH

1 609 92A 436

70538 Stuttgart
GERMANY

www.bosch-pt.com

GWS Professional

1 609 92A 436 (2019.01) O / 19

20-180 | 20-230 | 24-180 | 24-230

en Original instructions

2 |

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Bosch Power Tools 1 609 92A 436 | (15.01.2019)

6 | English

English

Safety instructions

General Power Tool Safety Warnings

WARNING

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 mains­operated (corded) power tool or battery-operated (cord­less) power tool.

Work area safety

u Keep work area clean and well lit. Cluttered or dark

areas invite accidents.

u 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.

u Keep children and bystanders away while operating a

power tool. Distractions can cause you to lose control.

Electrical safety

u 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.

u Avoid body contact with earthed or grounded sur-

faces, such as pipes, radiators, ranges and refrigerat­ors. There is an increased risk of electric shock if your

body is earthed or grounded.

u Do not expose power tools to rain or wet conditions.

Water entering a power tool will increase the risk of elec­tric shock.

u Do 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.

u When operating a power tool outdoors, use an exten-

sion cord suitable for outdoor use. Use of a cord suit­able for outdoor use reduces the risk of electric shock..

u If operating a power tool in a damp location is un-

avoidable, use a residual current device (RCD) protec­ted supply. Use of an RCD reduces the risk of electric

shock.

Personal safety

u 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 inatten-

tion while operating power tools may result in serious per­sonal injury.

Read all safety warnings and all in­structions. Failure to follow the

u Use 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 in­juries.

u 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.

u 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.

u Do not overreach. Keep proper footing and balance at

all times. This enables better control of the power tool in
unexpected situations.

u Dress 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.

u If devices are provided for the connection of dust ex-

traction and collection facilities, ensure these are con­nected and properly used. Use of dust collection can re-

duce dust-related hazards.

Power tool use and care

u 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.

u 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.

u 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.

u 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.

u Maintain 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.

u Keep cutting tools sharp and clean. Properly main-

tained cutting tools with sharp cutting edges are less
likely to bind and are easier to control.

u 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 per-

1 609 92A 436 | (15.01.2019) Bosch Power Tools

English | 7

formed. Use of the power tool for operations different
from those intended could result in a hazardous situation.

Service

u 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.

Safety information for the angle grinder

Safety Warnings common for Grinding, Sanding, Wire Brushing or Abrasive Cutting Off operations

u This power tool is intended to function as a grinder,

sander, wire brush or cut-off tool. 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.

u Operations 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 haz­ard and cause personal injury.

u Do 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.

u The 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.

u The 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.

u Threaded 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.

u Do 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 in­stall an undamaged accessory. After inspecting and
installing an accessory, position yourself and bystand­ers 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.

u Wear personal protective equipment. Depending on

application, use face shield, safety goggles or safety
glasses. As appropriate, wear dust mask, hearing pro­tectors, gloves and workshop apron capable of stop­ping small abrasive or workpiece fragments. The eye

protection must be capable of stopping flying debris gen-

erated by various operations . The dust mask or respir­ator must be capable of filtrating particles generated by
your operation. Prolonged exposure to high intensity
noise may cause hearing loss.

u Keep 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.

u Hold the power tool by insulated gripping surfaces

only, 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.

u Position the cord clear of the spinning accessory. If

you lose control, the cord may be cut or snagged and your
hand or arm may be pulled into the spinning accessory.

u Never 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 con­trol.

u Do 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.

u Regularly 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.

u Do not operate the power tool near flammable materi-

als. Sparks could ignite these materials.

u Do not use accessories that require liquid coolants.

Using water or other liquid coolants may result in electro­cution or shock.

Kickback and Related Warnings

Kickback is a sudden reaction to a pinched or snagged rotat­ing wheel, backing pad, brush or any other accessory. Pinch­ing or snagging causes rapid stalling of the rotating access­ory 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 direc­tion of the wheel’s movement at the point of pinching. Abras­ive 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.

u Maintain 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

Bosch Power Tools 1 609 92A 436 | (15.01.2019)

8 | English

during start-up. The operator can control torque reac-

tions or kickback forces, if proper precautions are taken.

u Never place your hand near the rotating accessory.

Accessory may kickback over your hand.

u Do 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.

u Use 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.

u Do not attach a saw chain woodcarving blade or

toothed saw blade. Such blades create frequent kick­back and loss of control.

Safety Warnings specific for Grinding and Abrasive Cutting-Off operations

u Use only wheel types that are recommended for your

power tool and the specific guard designed for the se­lected wheel. Wheels for which the power tool was not

designed cannot be adequately guarded and are unsafe.

u The grinding surface of centre depressed wheels must

be mounted below the plane of the guard lip. An im­properly mounted wheel that projects through the plane
of the guard lip cannot be adequately protected.

u The 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.

u Wheels must be used only for recommended applica-

tions. For example: do not grind with the side of cut­off wheel. Abrasive cut-off wheels are intended for peri-

pheral grinding, side forces applied to these wheels may
cause them to shatter.

u Always 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 pos­sibility of wheel breakage. Flanges for cut-off wheels may
be different from grinding wheel flanges.

u Do not use worn down wheels from larger power

tools. Wheel intended for larger power tool is not suit­able for the higher speed of a smaller tool and may burst.

Additional Safety Warnings specific for Abrasive Cutting Off operations

u Do 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.

u Do not position your body in line with and behind the

rotating wheel. When the wheel, at the point of opera­tion, is moving away from your body, the possible kick-

back may propel the spinning wheel and the power tool
directly at you.

u When 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 com­plete 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.

u Do 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.

u Support 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.

u Use 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

u Do not use excessively oversized sanding disc paper.

Follow manufacturers recommendations, when select­ing 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

u Be 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.

u If 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.

u Use suitable detectors to determine if utility lines are

hidden in the work area or call the local utility com­pany for assistance. Contact with electric lines can lead

to fire and electric shock. Damaging a gas line can lead to
explosion. Penetrating a water line causes property dam­age or may cause an electric shock.

u Do not touch grinding and cutting discs until they have

cooled down. The discs can become very hot while work­ing.

u Release the On/Off switch and set it to the off position

when the power supply is interrupted, e. g., in case of

1 609 92A 436 | (15.01.2019) Bosch Power Tools

English | 9

a power failure or when the mains plug is pulled. This
prevents uncontrolled restarting.

Products sold in GB only:

Your product is fitted with an BS 1363/A approved electric
plug with internal fuse (ASTA approved to BS 1362).

If the plug is not suitable for your socket outlets, it should be
cut off and an appropriate plug fitted in its place by an au­thorised customer service agent. The replacement plug
should have the same fuse rating as the original plug.

The severed plug must be disposed of to avoid a possible
shock hazard and should never be inserted into a mains
socket elsewhere.

u Secure the workpiece. A workpiece clamped with

clamping devices or in a vice is held more secure than by
hand.

Product Description and Specifications

Read all the safety and general instructions.

Failure 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 oper­ating manual.

Intended use

The power tool is intended for cutting, roughing and brush­ing metal and stone materials 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.

Product Features

The numbering of the product features refers to the diagram
of the power tool on the graphics page.

Spindle lock button

(1)

On/off switch

(2)

Side handle (insulated gripping surface)

(3)

Grinding spindle

(4)

Protective guard for grinding

(5)

Locking screw for protective guard

(6)

Hub flange with O‑ring

(7)

Grinding disc

(8)

Clamping nut

(9)

Two-pin spanner for clamping nut

(10)

Quick-clamping nut

(11)

Carbide grinding head

(12)

Protective guard for cutting

(13)

Cutting disc

(14)

Hand guard

(15)

Spacer discs

(16)

Rubber sanding pad

(17)

Abrasive disc

(18)

Round nut

(19)

Cup brush

(20)

Extraction guard for cutting with a guide block

(21)

Diamond cutting disc

(22)

Handle (insulated gripping surface)

(23)

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.

A)

A)

A)

A)

A)

A)

A)

A)

A)

A)

A)

A)

A)

A)

Technical Data

Angle grinder GWS 20-180 GWS 20-230 GWS 24-180 GWS 24-230

Article number

Rated power input W 2000 2000 2400 2400
Power output W 1250 1250 1700 1700
Rated speed min
Max. grinding disc diameter mm 180 230 180 230
Grinding spindle thread M 14 M 14 M 14 M 14
Max. thread length of grinding spindle mm 25 25 25 25
Weight according to EPTA-Procedure

01:2014
Protection class

The specifications apply to a rated voltage [U] of 230 V. These specifications may vary at different voltages and in country-specific models.
When switching on power tools with starting current limitation, the voltage drops briefly. Interference with other equipment may occur in the

event of unfavourable conditions in the electricity supply. Malfunctions are not expected if the impedances in the electricity supply are below

0.25 ohms.

Bosch Power Tools 1 609 92A 436 | (15.01.2019)

0 601 849 1.. 0 601 850 1.. 0 601 853 4.. 0 601 854 4..

-1

8500 6500 8500 6500

kg 4.6 5.0 5.5 5,8

/ II / II / II / II

10 | English

Fitting

Fitting Protective Equipment

u Pull the plug out of the socket before carrying out any

work on the power tool.

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 ser­vice immediately; see the "After-sales service and advice on
using products" section for addresses.

Protective guard for grinding

Place the protective guard (5) on the spindle collar. Adjust
the position of the protective guard (5) to the requirements
of the operation and lock the protective guard (5) with the
locking screw (6).

u Adjust the protective guard (5) such that sparking in

the direction of the operator is prevented.

Protective guard for cutting

u Always use the protective guard for cutting (13) when

cutting bonded abrasives.

u Provide sufficient dust extraction when cutting stone.

The protective guard for cutting (13) is fitted in the same
way as the protective guard for grinding (5).

Extraction guard for cutting with a guide block

The extraction guard for cutting with a guide block (21) is fit­ted in the same way as the protective guard for grinding (5).

Side handle

u Do not operate your power tool without the side

handle (3).

Screw the side handle (3) on the left or right of the machine
head depending on how your are working.

Hand guard

u Always fit the hand guard (15) when working with the

rubber sanding pad (17) or with the cup brush/disc

brush/flap disc.

Attach the hand guard (15) to the side handle (3).

Fitting the abrasive tools

u Pull the plug out of the socket before carrying out any

work on the power tool.

u Do not touch grinding and cutting discs until they have

cooled down. The discs can become very hot while work-

ing.
Clean the grinding spindle (4) and all the parts to be fitted.
Lock the grinding spindle with the spindle lock button (1)

before clamping and releasing the abrasive tools.

u Do not press the spindle lock button while the grind-

ing spindle is moving. The power tool may become dam-

aged if you do this.

Grinding/cutting disc

Pay attention to the dimensions of the abrasive tools. The
diameter of the hole must match that of the hub flange. Do
not use an adapter or reducer.

When using diamond cutting discs, make sure that the arrow
indicating the direction of rotation on the diamond cutting
disc matches the direction of rotation of the power tool (see
the direction of rotation arrow on the machine head).

See the graphics page for fitting instructions.
To fasten the grinding/cutting disc, screw on the clamping

nut (9) and tighten with the two-pin spanner; see the "Quick­clamping nut" section.

u After fitting the abrasive tool, check that the abrasive

tool is fitted correctly and can turn freely before
switching on the power tool. Make sure that the abras­ive tool does not brush against the protective guard or
other parts.

A plastic part (O-ring) is fitted around the cent­ring collar in the hub flange (7). If the O-ring
is missing or damaged, the hub flange (7)
must be replaced before operation can re­sume.

Flap disc

u Always fit the hand guard (15) when working with the

flap disc.

Rubber sanding pad

u Always fit the hand guard (15) when working with the

rubber sanding pad (17).
See the graphics page for fitting instructions.
Before fitting the rubber sanding pad (17), place the two

spacer discs (16) on the grinding spindle (4).
Screw on the round nut (19) and tighten with the two-pin

spanner.

Cup brush/disc brush

u Always fit the hand guard (15) when working with the

cup brush or disc brush.

See the graphics page for fitting instructions.
The cup brush/disc brush must be screwed onto the grinding

spindle until it rests firmly against the grinding spindle flange
at the end of the grinding spindle thread. Tighten the cup
brush/disc brush with an open-ended spanner.

Quick-clamping nut

To change the abrasive tool easily without having to use any
additional tools, you can use the quick-clamping nut (11) in­stead of the clamping nut (9).

u The quick-clamping nut (11) may be used only for

grinding or cutting discs.
Only use quick-clamping nuts (11) that are in good work-

ing order and not damaged.
When screwing on, make sure that the printed side of the

quick-clamping nut (11) is not facing the grinding disc;
the arrow must be pointing towards the index mark (24).

1 609 92A 436 | (15.01.2019) Bosch Power Tools

English | 11

(24)

D

D

b

d

Press the spindle lock but­ton (1) to lock the grinding
spindle. To tighten the
quick-clamping nut, turn
the grinding disc firmly
clockwise.

If the quick-clamping nut
has been attached correctly
and is not damaged, you
can loosen it by hand by
turning the knurled ring an­ticlockwise. If the quick-

clamping nut is stuck, do
not attempt to loosen it
with pliers – always use
the two-pin spanner. Posi-

tion the two‑pin spanner as
shown in the figure.

Approved abrasive

tools

You can use all the abrasive tools mentioned in these operat­ing instructions.

The permissible speed [rpm] or the circumferential speed
[m/s] of the abrasive tools used must at least match the val­ues 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]

180

230
180

230

8822.2

22.2

–

––8500

–

8500

65008080

65008080

100 30 M 14 8500 45

Rotating the machine head

u Pull the plug out of the socket before carrying out any

work on the power tool.

The machine head can be ro­tated in 90° increments. This
enables the on/off switch to
be brought into a more con­venient position for particular
working situations, such as
cutting operations using the
extraction guard for cutting
with a guide block (21) or for
left-handed persons.

Completely unscrew the four screws. Rotate the machine
head carefully, without removing it from the housing, 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 reac­tions 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 contain­ing 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.

u Avoid dust accumulation at the workplace. Dust can

easily ignite.

Operation

Start-up

u Pay attention to the mains voltage. The voltage of the

power source must match the voltage specified on the

rating plate of the power tool. Power tools marked

with 230V can also be operated with 220V.

When operating the power tool using a mobile generator that
does not have sufficient reserve capacity or an adequate
voltage control system with inrush current boost converter,
loss of performance or atypical behaviour may occur upon
switch-on.

Please check the suitability of the power generator you are
using, particularly with regard to the mains voltage and fre­quency.

u Products that are only sold in AUS and NZ: Use a resid-

ual current device (RCD) with a nominal residual current

of 30 mA or less.

u Hold the tool by the insulated gripping surfaces and

auxiliary handle only. The application tool could come

into contact with hidden wiring or its own cord. Con-

tact with live wires may make metal parts of the tool live,

posing a risk of electric shock.

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12 | English

Switching on/off

To start the power tool, push the on/off switch (2) forward
and then press it down.

To lock the on/off switch (2) in position, push the on/off
switch (2) further forward.

To switch off the power tool, release the on/off switch (2);
or, if the switch is locked, briefly press the on/off switch (2)
and then release it.

Switch without locking mechanism (country-specific):

To start the power tool, push the on/off switch (2) forward
and then press it down.

To switch off the power tool, release the on/off switch (2).

u Always 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.

Working Advice

u Pull the plug out of the socket before carrying out any

work on the power tool.

u Exercise caution when cutting slots in structural walls;

see the "Information on structures" section.

u Clamp the workpiece if it is not secure under its own

weight.

u Do not load the power tool so heavily that it comes to a

stop.

u If 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.

u Do not touch grinding and cutting discs until they have

cooled down. The discs can become very hot while work­ing.

u Do not use the power tool with a cut-off stand.

Note: Remove the plug from the socket when not using the
tool. When the power tool is plugged in, mains voltage is
present and the tool consumes a small amount of electricity,
even if switched off.

Rough grinding

u Never use cutting discs for rough grinding.

The best rough grinding results are achieved with a set angle
of 30° to 40°. Move the power tool back and forth with mod­erate 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 ser­vice life, lower noise levels and lower sanding temperatures
than conventional sanding sheets.

Cutting Metal

u Always use the protective guard for cutting (13) 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 mo­tion. Otherwise, there is a
risk that it will be pushed
uncontrolled out of the cut.
For best results when cut­ting profiles and rectangular
tubing, start at the smallest
cross section.

Cutting stone

u Provide sufficient dust extraction when cutting stone.
u Wear a dust mask.
u The 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 guide
block (21), the vacuum cleaner must be approved for vacu­uming stone dust. Suitable vacuum cleaners are available
from Bosch.

Switch on the power tool
and position it with the
front part of the guide block
on the workpiece. Move the
power tool with a moderate
feed motion that is suited to
the material being ma­chined.

When cutting especially

hard materials such as con­crete 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 dia­mond 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.

Working noticeably slower and with circular sparking indic­ate that the diamond cutting disc that has become dull. You
can resharpen the disc by briefly cutting into abrasive 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 ob­served under all circumstances. Seek advice from the re­sponsible structural engineer, architect or construction su­pervisor before starting work.

1 609 92A 436 | (15.01.2019) Bosch Power Tools

English | 13

Maintenance and Servicing

Maintenance and Cleaning

u Pull the plug out of the socket before carrying out any

work on the power tool.

u To ensure safe and efficient operation, always keep

the power tool and the ventilation slots clean.

u In extreme conditions, always use a dust extractor if

possible. Blow out ventilation slots frequently and in­stall a residual current device (RCD) upstream. When

machining metals, conductive dust can settle inside the

power tool, which can affect its protective insulation.
Store and handle the accessories carefully.
In order to avoid safety hazards, if the power supply cord

needs to be replaced, this must be done by Bosch or by an
after-sales service centre that is authorised to repair Bosch
power tools.

After-sales Service and Advice on Using Products

Our after-sales service can answer questions concerning
product maintenance and repair, as well as spare parts. You
can find exploded 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 accessor­ies.
www.powertool-portal.de, the internet portal for trades­people and DIY enthusiasts.

In all correspondence and spare parts orders, please always
include the 10‑digit article number given on the type plate of
the product.

Cambodia

Robert Bosch (Cambodia) Co., Ltd
Unit 8BC, GT Tower, 08th Floor, Street 169,
Czechoslovakia Blvd, Sangkat Veal Vong
Khan 7 Makara, Phnom Penh
VAT TIN: 100 169 511
Tel.: [phone]
Tel.: [phone]
www.bosch.com.kh

People’s Republic of China
China Mainland

Bosch Power Tool (China) Co. Ltd.
Bosch Service Center
567, Bin Kang Road
Bin Kang District
Hangzhou, Zhejiang Province
China 310052
Tel.: [phone] / 5588
Fax: [phone] x 5566# / 5588#
E-mail: [e-mail]
www.bosch-pt.com.cn

HK and Macau Special Administrative Regions

Robert Bosch Co. Ltd.
21st Floor, 625 King’s Road

North Point, Hong Kong
Customer Service Hotline: [phone]
Fax: [phone]
E-mail: [e-mail]
www.bosch-pt.com.hk

India

Bosch Service Center
69, Habibullah Road, (next to PSBB School), T. Nagar
Chennai–600077
Phone: [phone]

Bosch Service Center Rishyamook
85A, Panchkuin Road
New Delhi–110001
Phone: [phone]

Bosch Service Center 79,
Crystal Bldg., Dr. Annie Besant Road, Worli
Mumbai–400018
Phone: [phone] /
[phone] / [phone]

Indonesia

PT Robert Bosch
Palma Tower 10th Floor
Jalan RA Kartini II-S Kaveling 6
Pondok Pinang, Kebayoran Lama
Jakarta Selatan 12310
Tel.: [phone]
www.bosch-pt.co.id

Malaysia

Robert Bosch Sdn. Bhd.(220975-V) PT/SMY
No. 8A, Jalan 13/6
46200 Petaling Jaya
Selangor
Tel.: [phone]
Toll-Free: 1800 880188
Fax: [phone]
E-mail: [e-mail]
www.bosch-pt.com.my

Pakistan

Robert Bosch Middle East FZE – Pakistan Liaison Office
2nd Floor Plaza # 10, CCA Block, DHA Phase 5
Lahore, 54810
Phone: [phone]
E-mail: [e-mail]

Philippines

Robert Bosch, Inc.
28th Floor Fort Legend Towers,
3rd Avenue corner 31st Street,
Fort Bonifacio, Global City,
1634 Taguig City
Tel.: [phone]
Fax: [phone]
www.bosch-pt.com.ph

Singapore

Powerwell Service Centre Ptd Ltd
Bosch Authorised Service Centre (Power Tools)
4012 Ang Mo Kio Ave 10, #01-02 TECHplace
Singapore 569628

Bosch Power Tools 1 609 92A 436 | (15.01.2019)

14 | English

Tel.: [phone]
Fax: [phone]
E-mail: [e-mail]
www.powerwellsc.com
www.bosch-pt.com.sg

Thailand

Robert Bosch Ltd.
Liberty Square Building
No. 287, 11 Floor
Silom Road, Bangrak
Bangkok 10500
Tel.: [phone]
Fax: [phone]
Robert Bosch Ltd., P. O. Box 2054
Bangkok 10501
www.bosch.co.th

Bosch Service – Training Centre
La Salle Tower Ground Floor Unit No.2
10/11 La Salle Moo 16
Srinakharin Road
Bangkaew, Bang Plee
Samutprakarn 10540
Tel.: [phone]
Fax: [phone]

Vietnam

Branch of Bosch Vietnam Co., Ltd in HCMC
14th floor, Deutsches Haus, 33 Le Duan
Ben Nghe Ward, District 1, Ho Chi Minh City
Tel.: [phone]
Fax: [phone]
Hotline: [phone]
E-mail: [e-mail]
www.bosch-pt.com.vn

Armenia, Azerbaijan, Georgia, Kyrgyzstan, Mongolia,
Tajikistan, Turkmenistan, Uzbekistan

TOO "Robert Bosch" Power Tools, After Sales Service
Rayimbek Ave., 169/1
050050, Almaty, Kazakhstan
Service e-mail: [e-mail]
Official website: www.bosch.com, www.bosch-pt.com

Bahrain

Hatem Al Juffali Technical Equipment Establishment.
Kingdom of Bahrain, Setra Highway, Al Aker Area
Phone: [phone]
Fax: [phone]
E-mail: [e-mail]

Egypt

RBEG-LLC
22 Kamal Eldin Hussein
Sheraton Heliopolis
11799 Cairo
E-mail: [e-mail]

Iran

Robert Bosch Iran
3rd Floor, No 3, Maadiran Building
Aftab St., Khodami St., Vanak Sq.

Tehran 1994834571
Phone: [phone]

Iraq

Sahba Technology Group
Al Muthana airport road
Baghdad
Phone: [phone]
Phone Dubai: [phone]
E-mail: [e-mail]

Jordan

Roots Arabia – Jordan
Nasser Bin Jameel street, Building 37 Al Rabiah
11194 Amman
Phone: [phone]
E-mail: [e-mail]

Kuwait

Al Qurain Automotive Trading Company
Shuwaikh Industrial Area, Block 1, Plot 16, Street 3rd
P.O. Box 164 – Safat 13002
Phone: [phone]
Fax: [phone]
E-mail: [e-mail]

Lebanon
Tehini Hana & Co. S.A.R.L.

P.O. Box 90-449
Jdeideh
Dora-Beirut
Phone: [phone]
E-mail: [e-mail]

Libya
El Naser for Workshop Tools

Swanee Road, Alfalah Area
Tripoli
Phone: [phone]

Oman
Malatan Trading & Contracting LLC

P.O. Box 131
Ruwi, 112 Sultanate of Oman
Phone: [phone]
E-mail: [e-mail]

Qatar

International Construction Solutions W L L
P. O. Box 51,
Doha Phone: [phone]
Fax: [phone]
E-mail: [e-mail]

Saudi Arabia

Juffali Technical Equipment Co. (JTECO)
Kilo 14, Madinah Road, Al Bawadi District
Jeddah 21431
Phone: [phone] Ext. 1528
Fax: [phone]
E-mail: [e-mail]

Syria

Dallal Establishment for Power Tools
P.O. Box 1030

1 609 92A 436 | (15.01.2019) Bosch Power Tools

English | 15

Aleppo
Phone: [phone]
E-mail: [e-mail]

United Arab Emirates

Central Motors & Equipment LLC, P.O. Box 1984
Al-Wahda Street – Old Sana Building
Sharjah
Phone: [phone]
Fax: [phone]
E-mail: [e-mail]

Yemen

Abualrejal Trading Corporation
Sana’a Zubiery St. Front to new Parliament Building
Phone: [phone]
Fax: [phone]
E-mail: [e-mail]

Ethiopia

Forever plc
Kebele 2,754, BP 4806,
Addis Ababa
Phone: [phone]
E-mail: [e-mail]

Ghana

Peew-Williams Services Company Ltd
Mile 7, Plot 331, Before Achimota Mall.
Accra
Tel. +233552352511
E-mail: [e-mail]

Kenya

Robert Bosch East Africa Ltd
Mpaka Road P.O. Box 856
00606 Nairobi

Nigeria

Robert Bosch Nigeria Ltd.
52–54 Isaac John Street P.O. Box
GRA Ikeja – Lagos

Republic of South Africa
Customer service

Hotline: [phone]
Gauteng – BSC Service Centre

35 Roper Street, New Centre
Johannesburg
Tel.: [phone]
Fax: [phone]
E-mail: [e-mail]

KZN – BSC Service Centre
Unit E, Almar Centre
143 Crompton Street
Pinetown
Tel.: [phone]
Fax: [phone]
E-mail: [e-mail]

Western Cape – BSC Service Centre
Democracy Way, Prosperity Park
Milnerton
Tel.: [phone]

Fax: [phone]
E-mail: [e-mail]

Bosch Headquarters
Midrand, Gauteng
Tel.: [phone]
Fax: [phone]
E-mail: [e-mail]

Tanzania

Diesel & Autoelectric Service Ltd.
117 Nyerere Rd., P.O. Box 70839
Vingunguti 12109, Dar Es Salaam
Phone: [phone]

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:
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

Disposal

The power tool, accessories and packaging should be re­cycled in an environmentally friendly manner.

Do not dispose of power tools along with
household waste.

Bosch Power Tools 1 609 92A 436 | (15.01.2019)

16 | English

1 609 92A 436 | (15.01.2019) Bosch Power Tools

standard

| 17

Bosch Power Tools 1 609 92A 436 | (15.01.2019)

18 |

1 605 703 099

1 607 000 247

1 605 438 713

1 603 340 031

1 603 340 040

1 607 950 048

2 602 025 075

1 601 329 013

2 602 025 124

1 601 329 013

1 600 793 007

1 605 510 179
1 605 510 180

Ø 180 mm
Ø 230 mm

2 605 510 297
2 605 510 298

Ø 180 mm
Ø 230 mm

2 605 510 299
2 605 510 300

Ø 180 mm
Ø 230 mm

1 609 92A 436 | (15.01.2019) Bosch Power Tools