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 6E9 | (25.11.2020)Bosch Power Tools
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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
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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 6E9 | (25.11.2020)Bosch Power Tools
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a power failure or when the mains plug is pulled. This
prevents uncontrolled restarting.
u Secure the workpiece. A workpiece clamped with
clamping devices or in a vice is held more secure than by
hand.
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.
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)
Dust box (GWS24-180JZ/GWS24-230JZ)
(3)
Auxiliary handle (insulated gripping surface)
(4)
Grinding spindle
(5)
Protective guard for grinding
(6)
Locking screw for protective guard
(7)
Mounting flange with O‑ring
(8)
Grinding disc
(9)
Clamping nut
(10)
Two-pin spanner for clamping nut
(11)
Quick-clamping nut
(12)
Carbide grinding head
(13)
Protective guard for cutting
(14)
Cutting disc
(15)
Hand guard
(16)
Spacer discs
(17)
Rubber sanding pad
(18)
Abrasive disc
(19)
Round nut
(20)
Cup brush
(21)
Extraction guard for cutting with cutting guides
(22)
Diamond cutting disc
(23)
Handle (insulated gripping surface)
(24)
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.
tion
Weight according to EPTA-Procedure 01:2014
– with low-vibra-
kg5.75.95.75.95.86.0
tion auxiliary
handle
– with standard
kg5.65.85.65.85.75.9
auxiliary
handle
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.
Only for power tools without starting current limitation: Switching these on causes the voltage to drop briefly. Other tools may be adversely af-
fected by these if the conditions in the electricity supply are unfavourable. Malfunctions are not to be expected for system impedances
below0.058ohm.
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 Application Service" section for addresses.
Protective guard for grinding
Place the protective guard (6) on the spindle collar. Adjust
the position of the protective guard (6) to the requirements
of the operation and lock the protective guard (6) with the
locking screw (7).
u Adjust the protective guard (6)such that sparking in
the direction of the operator is prevented.
Protective guard for cutting
u Always use the protective guard for cutting (14) when
cutting bonded abrasives.
u Provide sufficient dust extraction when cutting stone.
The protective guard for cutting (14) is fitted in the same
way as the protective guard for grinding (6).
Extraction guard for cutting with a guide block
The extraction guard for cutting with a guide block (22) is fitted in the same way as the protective guard for grinding (6).
Side handle
u Do not operate your power tool without the side
handle(4).
Screw the side handle (4) on the left or right of the machine
head depending on how your are working.
Low-vibration auxiliary handle
/ II / II / II / II / II / II
machine head depending on the working method.
The low-vibration auxiliary handle reduces vibration, en-
abling the tool to be used safely and more comfortably.
u Do not operate your power tool without the side
handle (4).
u Do not make any alterations of any kind to the auxili-
ary handle.
Do not continue to use a damaged auxiliary handle.
Hand guard
u Always fit the hand guard (16) when working with the
rubber sanding plate (18) or with the cup brush/disc
brush/flap disc.
Attach the hand guard (16) to the side handle (4).
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 (5) 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 mounting flange.
Do not use an adapter or reducer.
When using diamond cutting discs, ensure that the arrow indicating the direction of rotation on the diamond cutting disc
matches the direction of rotation of the power tool (see the
Screw the auxiliary handle
(4) on the right or left of the
direction of rotation arrow on the machine head).
See the graphics page for assembly instructions.
JZ
1 609 92A 6E9 | (25.11.2020)Bosch Power Tools
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(25)
To fasten the grinding/cutting disc, screw on the clamping
nut(10) and tighten with the two-hole spanner(see " Quickclamping nut ", page11).
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 mounting flange (8). If the O-ring is missing or damaged, the mounting
flange (8) must be replaced before operation
can resume.
Flap disc
u Always fit the hand guard (16) when working with the
flap disc.
Rubber sanding pad
u Always fit the hand guard (16) when working with the
rubber sanding pad (18).
See the graphics page for fitting instructions.
Before fitting the rubber sanding pad (18), place the two
spacer discs (17) on the grinding spindle (5).
Screw on the round nut (20) and tighten with the two-pin
spanner.
Cup brush/disc brush
u Always fit the hand guard (16) 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 (12) instead of the clamping nut (10).
u The quick-clamping nut (12)may be used only for
grinding or cutting discs.
Only use quick-clamping nuts (12) that are in good work-
ing order and not damaged.
When screwing on, make sure that the printed side of the
quick-clamping nut (12) is not facing the grinding disc;
the arrow must be pointing towards the index mark (25).
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 [min-1] 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]
Dbd[min-1][m/s]
180
230
180
230
10030M 14850045
8822.2
22.2
–
––8500
–
8500
65008080
65008080
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
Bosch Power Tools1 609 92A 6E9 | (25.11.2020)
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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 230V can also be operated with 220V.
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.
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.
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.
Switch without locking mechanism (country-specific):
(GWS 24-180 P / GWS 24-230 P)
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).
Restart protection
(GWS 24-180 JZ / GWS 24-230 JZ)
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 (2) to the "off" position and then switch the power tool on again.
Starting current limitation
(GWS 24-180 JZ / GWS 24-230 JZ)
The electronic starting current limitation feature restricts the
power of the power tool when it is switched on and enables
operation using a 16 A fuse.
Note: If the power tool runs at full speed immediately after
being switched on, this means that the starting current limitation and restarting protection mechanisms have failed. The
power tool must be sent to the after-sales service immediately; see the "After-Sales Service and Application Service"
section for addresses.
Overload protection
(GWS 24-180 JZ / GWS 24-230 JZ)
When overloaded, the motor comes to a stop. Allow the
power tool to cool down unloaded at its maximum no-load
speed for approx. 5–10 seconds.
Emptying the dust box (see figureA)
(GWS 24-180 JZ / GWS 24-230 JZ)
Press both sides of the dust box(3) and remove the dust
box(3) from the power tool. Open the cover and empty the
dust box(3). Slide the dust box(3) back into the power tool
until it clicks into place.
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 structural design" 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 use the power tool with a cut-off stand.
u Do not touch grinding and cutting discs until they have
cooled down. The discs can become very hot while working.
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.
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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 (14) 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 (22), 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.
Maintenance and Service
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.
Dust box
To ensure optimum dust protection, we recommend cleaning the dust box(3) daily or at regular intervals after use.
The cleaning intervals depend on usage.
After-Sales Service and Application Service
Our after-sales service responds to your questions concerning 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 accessories.
In all correspondence and spare parts orders, please always
include the 10‑digit article number given on the nameplate
of the product.
Malaysia
Robert Bosch Sdn. Bhd.(220975-V) PT/SMY
No. 8A, Jalan 13/6
46200 Petaling Jaya
Selangor
Tel.: (03) 79663194
Toll-Free: 1800 880188
Fax: (03) 79583838