Bosch GBM 50-2 User manual

English | 19
Deutschland
Robert Bosch Power Tools GmbH
Servicezentrum Elektrowerkzeuge
Zur Luhne 2
37589 Kalefeld – Willershausen
Kundendienst: Tel.: [phone]
E-Mail: [email protected]
Unter www.bosch-pt.de können Sie online Ersatzteile be-
stellen oder Reparaturen anmelden.
Anwendungsberatung:
Tel.: [phone]
Fax: [phone]
E-Mail: [email protected]
Weitere Serviceadressen finden Sie unter:
www.bosch-pt.com/serviceaddresses
Entsorgung
Elektrowerkzeuge, Zubehör und Verpackungen sollen einer
umweltgerechten Wiederverwertung zugeführt werden.
Werfen Sie Elektrowerkzeuge nicht in den
Hausmüll!
Nur für EU-Länder:
Gemaß der Europaischen Richtlinie 2012/19/EU uber Elek-
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nales Recht mussen nicht mehr gebrauchsfahige Elektro-
werkzeuge getrennt gesammelt und einer umweltgerechten
Wiederverwertung zugefuhrt werden.
English
Safety Instructions
General Power Tool Safety Warnings
WARNING Read all safety warnings, instruc-
tions, illustrations and specifica-
tions provided with this power tool. Failure to follow all in-
structions listed below may result in electric shock, fire and/
or serious injury.
Save all warnings and instructions for future reference.
The term "power tool" in the warnings refers to your mains-
operated (corded) power tool or battery-operated (cord-
less) power tool.
Work area safety
uKeep work area clean and well lit. Cluttered or dark
areas invite accidents.
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 a 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 and clothing away from moving
parts. Loose clothes, jewellery or long hair can be caught
in moving parts.
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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.
uDo not let familiarity gained from frequent use of tools
allow you to become complacent and ignore tool
safety principles. A careless action can cause severe in-
jury within a fraction of a second.
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 re-
move the battery pack, if detachable, from the power
tool before making any adjustments, changing ac-
cessories, 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 and accessories. Check for mis-
alignment or binding 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.
uKeep handles and grasping surfaces dry, clean and
free from oil and grease. Slippery handles and grasping
surfaces do not allow for safe handling and control of the
tool in unexpected situations.
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.
Magnetic drill safety warnings
uOperate power tool by insulated grasping surfaces,
when performing an operation where the cutting ac-
cessory may contact hidden wiring or its own cord.
Cutting accessory contacting a “live” wire may make ex-
posed metal parts of the power tool “live” and could give
the operator an electric shock.
uWhen securing the power tool with the safety strap to
the workpiece, ensure that the safety strap is capable
of holding and restraining the machine during use. If
the workpiece is weak or porous, it may be damaged
causing the power tool to release from the workpiece.
uWhen drilling through walls or ceilings, ensure to pro-
tect persons and the work area on the other side. The
bit may extend through the hole or the core may fall out
on the other side.
uThe coolant tank may not be used when drilling into
vertical or sloped surfaces, or drilling overhead.
Please use foam coolant. Take care that no water pen-
etrates the tool. If water penetrates the power tool there
is an increased risk of an electric shock.
uThe power tool must be secured. A power tool that is
not properly secured may move or tip over and may result
in personal injury.
uDo not wear gloves. Gloves may be entangled by the ro-
tating parts or chips leading to personal injury.
uKeep your hands out of the drilling area while the tool
is running. Contact with rotating parts or chips may res-
ult in personal injury.
uMake sure the accessory is rotating before feeding
into the workpiece. Otherwise the accessory may be-
come jammed in the workpiece causing unexpected
movement of the workpiece and personal injury.
uWhen the accessory is jammed, stop applying down-
ward pressure and switch off the tool. Investigate and
take corrective actions to eliminate the cause of the
jam. Jamming can cause unexpected movement of the
workpiece and personal injury.
uAvoid generating long chips by regularly interrupting
downward pressure. Sharp metal chips may cause en-
tanglement and personal injuries.
uNever remove chips from the drilling area while the
tool is running. To remove chips, move the accessory
away from the workpiece, switch off the tool and wait
for the accessory to stop moving. Use tools such as a
brush or hook to remove chips. Contact with rotating
parts or chips may result in personal injury.
uAccessories with speed ratings must be rated at least
equal to the maximum speed marked on the power
tool. Accessories running faster than their rated speed
can break and fly apart.
uUse suitable detectors to determine if utility lines are
hidden in the work area or call the local utility com-
pany 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 dam-
age or may cause an electric shock.
uNever operate the power tool without the portable re-
sidual current device (PRCD) included in delivery.
uBefore beginning work, check that the portable resid-
ual current device (PRCD) is functioning properly.
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Have any damaged portable residual current devices
(PRCDs) repaired or replaced by a Bosch after-sales
service centre.
uPay attention that neither persons in the working area
nor the power tool itself come into contact with the
water that comes out.
uWear non-skid shoes. This prevents injuries that can oc-
cur from slipping on smooth surfaces.
uProducts sold in GB only: Never operate the 110 V ex-
ecution of the machine without isolation transformer
according to EN/IEC 61558-1 and EN/IEC
61558-2-23. The isolation transformer must have a
grounded earth wire on the secondary winding side.
uNever leave the tool unattended before it has come to
a complete stop. Drilling tools that are still running can
cause injuries.
uKeep the drill cord away from the work area. Damaged
or entangled cords increase the risk of electric shock.
uDo not overload the power tool or climb or stand on it.
Overloading or standing on the power tool can raise its
centre of gravity, causing it to tip over.
uThe power tool must only be operated on a mains sup-
ply with protective conductor and adequate dimen-
sioning.
Persons with cardiac pacemakers or other
medicinal implants may not use this power-
tool.
Carrying along metal parts and
watches is prohibited.
uDisconnect the plug from the power source and/or re-
move the battery from the power tool before making
any adjustments to the power tool or changing ac-
cessories. Accidents can occur when power tools are
started unintentionally.
uWhen using the power tool for overhead applications,
two persons are always required.
uSecure the power tool with a safety strap when
drilling into vertical or sloped surfaces, or working
overhead. In the event of a power failure or overload, the
magnet retention force is not maintained. The power tool
may fall over and cause accidents.
uDanger of the power tool falling down due to sudden
pendular motion of the power tool. When working on a
scaffold, the power tool can be subject to a sudden pen-
dular motion when the drill starts or in case of a power
failure. Secure the power tool with the provided safety
strap. Secure yourself against falling down by applying a
safety rope/belt.
uThe surface must be smooth and clean. Smooth out
coarse irregularities, e. g., welding spatter and re-
move loose rust, dirt and grease. The holding force of
the magnet applies only for appropriate surfaces.
uSecure the power tool on a stable, even and horizontal
surface. If the power tool can slip or shake, the applica-
tion tool cannot be operated evenly and safely.
uKeep the work surface clean, including the workpiece.
Sharp-edged drilling chips and other objects may cause
injury. Material mixtures are particularly hazardous. Light
metal dust may catch fire or explode.
uDo not touch the application tool after working before
it has cooled. The application tool becomes very hot
while working.
uDo not touch the drill core that will be automatically
ejected through the guide pin once the work process
has ended. The drill core can become very hot.
uCheck the cable regularly and have a damaged cable
repaired only by an authorised customer service
agent for Bosch power tools. Replace damaged exten-
sion cables. This will ensure that the safety of the power
tool is maintained.
uStore the power tool safely when it is not in use. The
storage location must be dry and lockable. This pre-
vents the power tool from storage damage, and from be-
ing operated by untrained persons.
uNever use the power tool if the cable is damaged. Do
not touch the damaged cable and pull out the mains
plug if the cable is damaged while working. Damaged
cables increase the risk of an electric shock.
uConnect the power tool to a mains supply that is prop-
erly connected to earth. The socket and extension cable
must have a fully functioning protective conductor.
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 au-
thorised 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.
uThe retention of the magnets depends on the thick-
ness of the workpiece. They hold best on low-carbon
steel with a thickness of at least 20 mm. When drilling
into thinner steel, an additional steel plate (of at least 100
x 200 x 20 mm) must be placed under the magnetic base.
Ensure that the steel plate cannot fall off.
uMetal chips and other debris will seriously hamper
magnetic adhesion. Always ensure that the magnetic
base is clean.
uAvoid the magnet releasing. Ensure that the magnetic
base has properly adhered to the work piece before be-
ginning drilling.
uDo not switch off the magnetic power or use the re-
verse drilling function before the power tool comes to
a complete stop.
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uOther units used on the same receptacle will cause un-
even voltage that could lead to the magnet releasing.
Always use the power tool alone on the receptacle.
uAvoid operating annular cutters without coolant fluid.
Always check coolant level before operating.
uProtect the motor. Never allow coolant fluid, water, or
other contaminants enter the motor.
uMetal chips are often very sharp and hot. Never touch
them with bare hands. Clean up with a magnetic chip
collector and a chip hook or other appropriate tool.
uNever attempt to use the power tool with incorrect
current or abnormally low voltage. Check the name-
plate of the power tool to ensure that correct voltage and
frequency are used.
uThe power tool is delivered with a laser warning sign
(see table: "Symbols and their meaning").
uNever make warning signs on the machine unrecognis-
able.
Do not direct the laser beam at persons or
animals and do not stare into the direct or
reflected laser beam yourself. You could
blind somebody, cause accidents or damage
your eyes.
uIf laser radiation hits your eye, you must close your
eyes and immediately turn your head away from the
beam.
uDo not make any modifications to the laser equip-
ment.
uDo not let children use the power tool unsupervised.
They could unintentionally blind themselves or other per-
sons
uIf the text of the laser warning label is not in your na-
tional language, stick the provided warning label in
your national language over it before operating for the
first time.
Symbols
The following symbols may be important for the operation of
your power tool. Please take note of these symbols and their
meaning. Correctly interpreting the symbols will help you to
operate the power tool more effectively and safely.
Symbols and their meanings
WARNING! Do not direct the
laser beam at persons or an-
imals and do not look directly
into the laser beam or at its
reflection.
Wear safety goggles.
Symbols and their meanings
Wear hearing protection.
Exposure to noise can cause
hearing loss.
WARNING! Ensure that the
safety strap is working prop-
erly before you use it. Never
use a safety strap if it is dam-
aged. Instead, replace it im-
mediately.
WARNING! The tool must
not be operated outside in
wet weather.
WARNING! If the beam of
the overload indicator lights
up close to this symbol, the
workload is very high. Re-
duce the workload or switch
the motor off, otherwise the
overload protection will be
activated and the motor will
be shut off automatically.
If the beam of the overload
indicator lights up close to
this symbol, the workload is
optimal and there is no
chance of an overload.
WARNING! Do not hold your
hand underneath the applic-
ation tool or the accessories
when you are changing
these.
WARNING! Before drilling,
ensure that the magnet
strength is sufficient. The
surface of the workpiece
must be level, clean and suf-
ficiently thick.
WARNING! When drilling
into vertical or diagonal sur-
faces or overhead, the power
tool must be secured with
the safety strap.
Product Description and
Specifications
Read all the safety and general instructions.
Failure to observe the safety and general in-
structions may result in electric shock, fire
and/or serious injury.
Please observe the illustrations at the beginning of this oper-
ating manual.
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Intended Use
The power tool is suitable for drilling in magnetisable materi-
als (e.g. steel).
The power tool can be used horizontally, vertically and over-
head. Ensure that the workpiece clamping surface is level, is
at least equal to the footprint of the power tool and consists
of clean, magnetisable material at least 20mm thick.
Product Features
The numbering of the product features refers to the diagram
of the power tool on the graphics page.
(1) Carbon brush cover
(2) Speed preselection thumbwheel
(3) Handle (insulated gripping surface)
(4) Crank handle (x 3)
(5) Crank hub
(6) Overload indicator
(7) Laser on/off switch
(8) Rotational direction switch
(9) Motor on/off switch
(10) Magnetic base
(11) Holder for safety strap
(12) Tool holder
(13) Opening for MT2 drill drift
(14) Indicator for carbon brush change
(15) Portable residual current device
(16) Portable residual current device indicator
(17) Rail for coolant tank holder
(18) Release button for gear selector switch
(19) Gear selector switch
(20) Magnet on/off switch
(21) Magnet strength indicator
(22) Adapter for annular cutter
(23) Adapter for screw tapa)
(24) Screw tapa)
(25) Hex key (3/4/6 mm)
(26) Pilot pin
(27) Annular cuttera)
(28) Twist drill bit MT2a)
(29) Twist drill bit MT1a)
(30) Reduction sleeve (MT2/MT1)
(31) Twist drill bit with cylindrical shanka)
(32) Keyed chuck (up to a diameter of 16 mm)a)
(33) Taper mandrela)
(34) MT2 drill drift
(35) Coolant tank
(36) Coolant tank holder
(37) Coolant hose
(38) Connector for cooling system
(39) Valve for coolant
(40) Ratchet
(41) Pawl on ratchet
(42) Safety strap
(43) Scale for drilling depth
(44) Drill unit
(45) Screws for guide rail
(46) Screws for gap adjustment
(47) Laser cover
(48) Laser beam output
(49) Clip
(50) Screw for laser adjustment (right/left)
(51) Screw for laser adjustment (forward/back)
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
Magnetic drill GBM 50-2
Article number 3601AB40..
Rated power input W 1200
No-load speed
– First gear min−1 50−250
– Second gear min−1 100−510
Laser type nm 635
mW < 1
Laser class 2
C61
Laser line divergence mrad (full
angle)
0.5
Max. drilling diameter
– Annular cutter mm 50
– Twist drill bit mm 23
– Screw tap M16
Tool holder MT 2 – DIN 228
Magnet retention force kN 14
Max. drill stroke mm 165
Magnetic base dimensions
(width x depth x height)
mm 200x98x38.5
Weight according to
EPTA-Procedure01:2014
kg 14.7
Protection class /I
The specifications apply to a rated voltage [U] of 230 V. These spe-
cifications may vary at different voltages and in country-specific mod-
els.
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24 | English
Noise values
Noise emission values determined according to
EN62841-1AnnexI.
Typically, the A-weighted noise level of the power tool is:
Sound pressure level 90dB(A); Sound power level 110
dB(A). Uncertainty K=3dB.
Wear hearing protection
The noise emission value given in these instructions has
been measured in accordance with a standardised measur-
ing procedure and may be used to compare power tools. It
may also be used for a preliminary estimation of noise emis-
sions.
The noise emission value given represents the main applica-
tions of the power tool. However, if the power tool is used
for other applications, with different application tools or is
poorly maintained, the noise emission value may differ. This
may significantly increase noise emissions over the total
working period.
To estimate noise emissions accurately, the times when the
tool is switched off, or when it is running but not actually be-
ing used, should also be taken into account. This may signi-
ficantly reduce noise emissions over the total working
period.
Assembly
uPull the plug out of the socket before carrying out any
work on the power tool.
Fitting the crank handle
– Screw the three crank handles (4) tightly into the crank
hub (5).
Changing the tool (see figure A)
– Turn the drive unit all the way up using the crank handle
(4).
– Ensure that the application tools are free of grease.
Fitting the annular cutter
– Insert the pilot pin (26) into the annular cutter (27) (TCT
and HSS annular cutters require different diameters of pi-
lot pin).
– Insert the annular cutter with the pilot pin into the annular
cutter adapter (22) and tighten the screws using the hex
key (6 mm) (25).
Where possible, you should use an annular cutter with
a Weldon shank.
– Insert the annular cutter adapter into the tool holder
(12).
– Connect the coolant hose (37) with the connector on the
annular cutter adapter.
Fitting the twist drill bit
Tools with morse taper MT2:
– Insert the tool directly into the tool holder (12).
Tools with morse taper MT1:
– Insert the tool into the reduction sleeve (MT2/MT1) (30).
– Insert the reduction sleeve (with the tool inserted) into
the tool holder (12).
Tools with cylindrical shank:
– Screw the keyed chuck (32) onto the taper mandrel (33)
and insert the tool.
– Insert the taper mandrel (with the keyed chuck screwed
in) into the tool holder (12).
uMake sure that the tool clicks securely into place.
uDo not use force to insert the Morse taper/taper man-
drel. Excessive force could damage the tool holder and
the inserted tool.
Fitting the screw tap
Use the correct screw tap adapter (23) for screw tapping.
– Insert the screw tap (24) into the adapter (23).
– With the screw tap (24) inserted, insert the adapter (23)
into the annular cutter adapter (22) and tighten it using
the hex key (6mm) (25).
– Insert the annular cutter adapter (22) into the tool holder
(12).
Removing the tool
– Place the MT2 drill drift (34) in the opening (13) so that
the bevelled edge faces down.
If the drill drift (34) will not go through the drive spindle,
turn the application tool slightly.
– Using a hammer, push the drill drift (34) towards the tool
and remove the application tool from the tool holder.
Fitting the coolant supply system (see figure B)
uThe coolant system must only be used when drilling
with the annular cutter.
The coolant tank must be filled with coolant before being
used. Before opening the valve, you must pull up the rear
small cap of the coolant tank.
Open the valve fully before switching on the power tool.
By pulling or pushing the coolant tank, the volume of the
tank can be adjusted between 500 ml and 750 ml.
The coolant supply system may not be used when drilling
into vertical or sloped surfaces, or drilling overhead.
– Insert the coolant tank (35) into the holder (36).
– With the coolant tank inserted, push the holder into the
rail (17) from above.
– Connect the connector (38) of the coolant valve to the
coolant hose (37).
The coolant tank must be filled with coolant before being
used.
– Make sure that the shut-off valve (39) is closed.
– Unscrew the coolant tank cap and fill the tank with
coolant.
– Screw the cap back onto the coolant tank.
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Operation
Wear ear defenders and eye protection
when using the power tool.
Work preparation
Setting the Rotational Direction
uOnly operate the rotational direction switch(8) when
the power tool is not in use.
–Clockwise rotation: Push the rotational direction switch
upwards to position "R".
–Anti-clockwise rotation: Push the rotational direction
switch downwards to position "L".
Note: Anti-clockwise rotation must not be used for
drilling.
Portable residual current device
Always check that the residual current device is working cor-
rectly before starting the power tool.
– Ensure that the magnet on/off switch (20) is in position
"0".
– Plug in the mains plug and press and hold the RESET but-
ton on the residual current device (15) until the indicator
(16) lights up red.
– Press and hold the TEST button on the residual current
device (15) until the indicator (16) goes out. If the indic-
ator (16) does not go out, this means the residual current
device is faulty and must be repaired. Do not work with
the power tool under any circumstances.
– Once the indicator (16) has gone out, press the RESET
button again.
– If the indicator (16) lights up red, position the tool (see
"Correctly positioning the power tool", page25).
uNOTE: After disconnecting the power tool from the
power source, you must always perform this test
again before using the power tool.
Note: The residual current device protects against electric
shock at 10mA or more.
Correctly positioning the power tool
A laser cross shows you the exact drilling point.
– Switch on the laser unit via the on/off switch (7).
– Position the power tool on the workpiece and align it with
the laser cross on the marking of the workpiece.
– Push the magnet on/off switch (20) upwards and check
that the power tool adheres to the surface of the work-
piece.
– Use the safety strap (42) to secure the power tool if ne-
cessary.
Fitting the safety strap (see figure C)
uWhenever you are working overhead or on diagonal or
vertical surfaces, secure the power tool with the sup-
plied safety strap to prevent it from falling over.
uCheck that the safety strap is working properly before
you use it. Never use a safety strap that is damaged;
instead, replace it immediately.
– Attach the safety strap (42) to the power tool so that it is
as free of play as possible.
– Push the strap through the holder (11) and place it
around the workpiece.
– Tighten the safety strap using the ratchet (40).
– To loosen the safety strap, press the pawl (41) on the
ratchet and pull out the strap.
– Attach the safety strap so that the power tool will move
away from you if it slips.
Setting the drilling depth (see figure D)
The drilling depth scale (43) on the crank hub (5) can be
used to set the required drilling depth.
The drilling depth can be set using the lines on the scale. The
distance between each of the smaller lines amounts to
1mm, while the distance between the larger lines is 10mm.
Starting Operation
uPay attention to the mains voltage. The voltage of the
power source must match the voltage specified on the
rating plate of the power tool.
uProducts 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.
Switching On
– Position and secure the power tool.
– To switch on the power tool, push the motor on/off
switch (9) to position "I".
Note: The power tool can only be switched on once the mag-
net has already been activated.
Switching Off
– To switch off the power tool, push the motor on/off
switch (9) to position "0".
– Wait until the power tool has come to a complete stop.
– Push the magnet on/off switch (20) downwards to switch
off the magnet.
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 power tool, push the motor on/off
switch(9) to position "I".
Note: Once the power supply has been restored, press the
RESET button on the residual current device (15). The mag-
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26 | English
net switches on automatically as soon as the indicator (16)
on the residual current device (15) lights up red.
Overload protection
The power tool is equipped with an overload protection sys-
tem. In normal conditions of use, the power tool cannot be
overloaded. In the event of overloading, the power tool auto-
matically shuts off the electronics. The magnet will remain
active.
– To start the power tool again after this, press the motor
on/off switch (9) into position "I".
Carry out the following steps before you continue working
with the power tool:
– Eliminate any blockages that may be present. If the ap-
plication tool jams, the anti-clockwise rotation function
must not be used.
– Allow the power tool to run with no load for approx. one
minute; afterwards, it will be ready for use again.
Overload indicator
The overload indicator(6) indicates whether an overload
has occurred when the power tool is switched on.
Green continuous light No overload
Yellow continuous
light
Heavy workload
– Reduce feed speed
Red flashing light Very heavy workload
– Reduce feed speed or switch off
motor, otherwise overload pro-
tection will be activated
Adjusting the Speed
uSelect the correct speed before starting work. The
speed must be appropriate for both the drilling dia-
meter and the material you intend to drill. When the
speed is set incorrectly, the application tool can become
damaged or get caught in the workpiece.
Mechanical gear selection
uOnly operate the gear selector switch (19) when the
power tool is not in use.
You can preselect two speed ranges with the gear selector
switch (19).
First gear:
Low speed range for working with large drilling diameters.
Second gear:
High speed range for working with small drilling diameters.
– Press the release button (18) and turn the gear selector
switch (19) into the required position.
– If the gear selector switch is not able to be rotated in
place, turn the application tool slightly and then change to
the required position.
Speed control
You can preselect the required speed using the speed
preselection thumbwheel (2), even during operation.
The required speed depends on the application tool used
and the material being machined. This will prevent the ap-
plication tool from overheating when drilling and guarantee
high drilling quality.
Speed preselection Application tool
Gear I: 50−255min−1 Annular cutter (dia.
35−50mm), screw
tap
Gear II: 100−510min−1 Twist drill, annular cut-
ter (dia. <35mm)
Working Advice
Workpiece Properties
uThe magnet retention force of the power tool essen-
tially depends on the thickness of the workpiece. The
greatest magnet retention force is achieved using soft
steel with a thickness of at least 20mm.
Note: When drilling into thinner steel, an additional steel
plate (of at least 100 x 200 x 20mm) must be placed under
the magnetic base. Ensure that the steel plate cannot fall off.
General Advice
uSecure the power tool with a safety strap when work-
ing overhead or on non-horizontal surfaces. In the
event of a power failure or overload, the magnet retention
force is not maintained. The power tool may fall over and
cause accidents.
uIf the application tool jams, do not apply any more
feed; instead, switch off the tool. Investigate the reason
for the application tool jamming and eliminate the cause.
Do not use the anti-clockwise rotation function.
uAlways check all parts of the coolant supply system
before beginning work. Never use damaged parts.
uKeep the coolant away from tool parts and people in
the working area.
The surface of the workpiece must be smooth and clean.
Smooth out coarse irregularities, e.g. welding spatter, and
remove loose rust, dirt and grease. The retention force of the
magnet only applies for suitable surfaces.
The motor of the power tool can only be started when the
magnet is switched on. Before drilling, the status of the mag-
net strength(21) should be checked.
Magnet
strength indic-
ator
Magnet strength
Green continu-
ous light
Sufficient magnet strength
Red flashing
light
Insufficient magnet strength; the power
tool must not be used.
Causes: Material not thick enough, un-
even surface, coated in paint, scale or
zinc, unsuitable material (e.g.high-car-
bon steel)
– Use a drill emulsion or cutting oil for cooling and lubrica-
tion in order to prevent the drill bit from overheating or
jamming.
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English | 27
– Metal workpieces should be centre-punched before being
drilled.
– Twist drill: For drilling diameters >10mm, pre-drill with a
small drilling diameter. This allows you to reduce the con-
tact pressure and puts less strain on the power tool.
– When drilling into metal, only use sharpened annular cut-
ters (brand accessories) that are in perfect condition.
– Turn the crank handle(4) to move the drill forwards.
– Select the speed that is appropriate to the specifications
of the tool
Note: When thread-cutting, the lowest speed setting
must be used.
Working with the Annular Cutter
– Only use annular cutters that are free of defects; ensure
that these are in perfect condition before each use. Do
not use any annular cutters that are damaged.
– Switch the power tool off immediately if the annular cut-
ter gets stuck.
– Protect the annular cutter. The tip of the annular cutter is
hard yet fragile.
The following measures will help to slow down the wear and
prevent breakage of annular cutters:
– When drilling in steel, ensure that there is enough coolant
available; use coolant for metal cutting.
– Make sure that the workpiece is level and clean to guaran-
tee the required magnet strength.
– Before drilling, ensure that all parts are properly at-
tached.
– At the start and end of the drilling procedure, the contact
pressure should be reduced by a third.
– If large quantities of metal chips accrue when drilling in
materials such as cast iron, copper die casting, etc., com-
pressed air can be used instead of coolant to assist in the
removal of metal chips.
Neutral Position of the Rotational Direction Switch
The power tool stops if the rotational direction switch(8) is
activated during drilling.
If the rotational direction switch is in the centre position, the
application tool can be rotated clockwise while the on/off
switch for the motor(9) is continuously pressed.
In this way, the thread-cutting process can be ended
smoothly.
Drilling
– Align the power tool by referring to the laser cross on the
workpiece.
– Switch the magnet on to fix the power tool to the work-
piece.
– Secure the power tool with the safety strap when drilling
into vertical or sloped surfaces, or working overhead.
– Set an appropriate speed.
– Switch on the power tool.
– To drill, turn the crank handle (4) with uniform feed until
the required drilling depth is reached.
– Once the required drilling depth has been reached, re-
tract the crank handle until the drive unit has returned to
its initial position.
– Switch off the power tool, loosen the safety strap if ne-
cessary and switch off the laser and magnet.
Transport
– Check that all application tools are firmly connected with
the power tool and that the drill core is no longer situated
in the application tool.
– Wind up the network cable completely and tie it together.
– Always use the transport handle(3) to lift and transport
the power tool.
– Never pull on the crank or the cable of the power tool in
order to move it.
Maintenance and service
Maintenance and Cleaning
uPull the plug out of the socket before carrying out any
work on the power tool.
uTo ensure safe and efficient operation, always keep
the power tool and the ventilation slots clean.
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.
Replacing carbon brushes
Indicator for carbon brush change:
The indicator for changing the carbon brush(14) will start to
light up red approx. eight hours before the power tool auto-
matically switches off as a result of the carbon brushes wear-
ing out. You can continue to use the power tool until it
switches off.
The power tool should be sent to the Bosch after-sales ser-
vice. For addresses, see the section "After-Sales Service and
Application Service".
Never replace only a single carbon brush.
Note: Only use carbon brushes supplied by Bosch and inten-
ded specifically for your product.
– Unscrew the carbon brush cover(1) using a suitable
screwdriver.
– Replace the spring-loaded carbon brushes and screw the
cap back on again.
Adjusting the Guide Rail Gap (see figuresE1–E3)
If the power tool vibrates strongly when drilling or a gap is
visible on the guide rail, the width of the guide rail gap must
be adjusted. This prevents application tools from being
snapped off and avoids damage to the power tool.
– Pull the mains plugs out of the plug socket, remove ap-
plication tools and the coolant supply system and place
the power tool down on a firm, level and horizontal sur-
face.
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28 | Français
– Turn the drill unit (44) using the crank handle (4) up-
wards, until the recess is above the uppermost screw
(45).
– Unscrew the upper screw (45) for the left guide rail using
the hex key (4mm) (25).
– Turn the drill unit (44) all the way up using the crank
handle (4).
– Unscrew the three lower screws (45) for the left guide rail
using the hex key (4mm) (25).
– Tighten the four screws (46) using the hex key (3mm)
(25) while turning the drill unit (44) up and down using
the crank handle (4). Adjust the required feed force while
doing so.
– Turn the drill unit all the way up and tighten the three
lower screws (45) for the left guide rail using the hex key
(4mm) (25).
– Turn the drill unit all the way down and tighten the upper
screw (45) for the left guide rail using the hex key (4mm)
(25).
Adjusting the laser (see figure F)
To ensure precise drilling, the laser beams must be checked
after intensive use and adjusted as necessary.
– To switch on the laser, push the laser on/off switch (7)
into position "I".
– Unscrew the laser cover (47).
– Slightly undo the screws for the clip (49).
– Move the laser cross right or left by turning the screw
(50) in the appropriate direction.
– Move the laser cross towards or away from the tool by
turning the screw (51) in the appropriate direction.
– Retighten the screws for the clip (49).
– Screw the laser cover (47) back on.
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.
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]
You can find further service addresses at:
www.bosch-pt.com/serviceaddresses
Disposal
The power tool, accessories and packaging should be re-
cycled in an environmentally friendly manner.
Do not dispose of power tools along with
household waste.
Only for EU countries:
According to the European Directive 2012/19/EU on Waste
Electrical and Electronic Equipment and its implementation
into national law, power tools that are no longer usable must
be collected separately and disposed of in an environment-
ally friendly manner.
Only for United Kingdom:
According to Waste Electrical and Electronic Equipment Reg-
ulations 2013 (2013/3113), power tools that are no longer
usable must be collected separately and disposed of in an
environmentally friendly manner.
Français
Consignes de sécurité
Avertissements de sécurité généraux pour l’outil
électrique
AVERTISSE-
MENT
Lire tous les avertissements de sé-
curité, les instructions, les illustra-
tions et les spécifications fournis
avec cet outil électrique. Ne pas suivre les instructions
énumérées ci-dessous peut provoquer un choc électrique,
un incendie et/ou une blessure sérieuse.
Conserver tous les avertissements et toutes les instruc-
tions pour pouvoir s'y reporter ultérieurement.
Le terme "outil électrique" dans les avertissements fait réfé-
rence à votre outil électrique alimenté par le secteur (avec
cordon d’alimentation) ou votre outil électrique fonctionnant
sur batterie (sans cordon d’alimentation).
Sécurité de la zone de travail
uConserver la zone de travail propre et bien éclairée.
Les zones en désordre ou sombres sont propices aux ac-
cidents.
uNe pas faire fonctionner les outils électriques en at-
mosphère explosive, par exemple en présence de li-
quides inflammables, de gaz ou de poussières. Les ou-
tils électriques produisent des étincelles qui peuvent en-
flammer les poussières ou les fumées.
uMaintenir les enfants et les personnes présentes à
l’écart pendant l’utilisation de l’outil électrique. Les
1 609 92A 4S6 | (10.08.2021) Bosch Power Tools