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 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-
Read all safety warnings, instructions, illustrations and specifica-
tion while operating power tools may result in serious personal injury.
u Use personal protective equipment. Always wear eye
protection. Protective equipment such as a dust mask,
non-skid safety shoes, hard hat or hearing protection
used for appropriate conditions will reduce personal injuries.
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 and clothing 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.
u Do not let familiarity gained from frequent use of tools
allow you to become complacent and ignore tool
safety principles. A careless action can cause severe in-
jury within a fraction of a second.
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 re-
move the battery pack, if detachable, from the power
tool before making any adjustments, changing accessories, or storing power tools. Such preventive
safety measures reduce the risk of starting the power tool
accidentally.
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 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.
1 609 92A 62G | (01.12.2020)Bosch Power Tools
English | 5
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 performed. Use of the power tool for operations different
from those intended could result in a hazardous situation.
u Keep handles and grasping surfaces dry, clean and
free from oil and grease. Slippery handles and grasping
surfaces do not allow for safe handling and control of the
tool in unexpected situations.
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 Warnings for Sander
u Only use the power tool for dry sanding. Water entering
a power tool will increase the risk of electric shock.
u Ensure that no persons are at risk due to flying sparks.
Remove combustible materials from the surrounding
area. Flying sparks are created when sanding metals.
u Warning: Danger of fire! Avoid overheating the work-
piece and the sander. Always empty the dust collector
before taking a break from work. Sanding dust in the
dust bag, microfilter, paper bag (or in the filter bag or vacuum cleaner filter) can spontaneously combust under
certain conditions, for example if flying sparks are created when sanding metals. This risk is increased if the
sanding dust is mixed with paint or polyurethane residue
or with other chemical substances and if the workpiece is
hot as a result of prolonged work.
u Clean the air vents on your power tool regularly. The
motor’s fan will draw the dust inside the housing and excessive accumulation of powdered metal may cause electrical hazards.
u Hold the power tool firmly with both hands and make
sure you have a stable footing. The power tool can be
more securely guided with both hands.
u Always wait until the power tool has come to a com-
plete stop before placing it down.
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 dry sanding of wood, plastic,
metal, filler and varnished surfaces.
Power tools with electronic control are also suitable for polishing.
Product Features
The numbering of the product features refers to the diagram
of the power tool on the graphics page.
Orbital stroke rate preselection thumbwheel
(1)
On/off switch
(2)
Extraction pipe
(3)
Extraction outlet
(4)
Auxiliary handle (insulated gripping surface)
(5)
Screw for auxiliary handle
(6)
Handle (insulated gripping surface)
(7)
Sanding sheet
(8)
Hex key
(9)
Screw for sanding pad
(10)
Sanding pad
(11)
Corner protection
(12)
Threaded hole
(13)
Mode selector switch
(14)
Release button
(15)
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)
Technical Data
Random orbit sandersGET 75-150GET 55-125
Article number
Orbital stroke rate preselection●●
Rated power inputW750550
Bosch Power Tools1 609 92A 62G | (01.12.2020)
3 601 B57 1..3 601 B57 0..
6 | English
Random orbit sandersGET 75-150GET 55-125
No-load speed n
0
No-load orbital stroke ratemin
Sanding pad speed during coarse sandingmin
min
-1
-1
-1
3300–73003300–7800
6600–14,6006600–15,600
290–640200–480
Orbit diametermm4.53.5
Sanding pad diametermm150125
Weight according to EPTA-Procedure
kg2.62.4
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.
Assembly
u Pull the plug out of the socket before carrying out any
work on the power tool.
Changing the Sanding Sheet
To remove the sanding sheet (8), lift it from the side and pull
it from the sanding pad (11).
Remove dirt and dust from the sanding pad (11), e.g. with a
paintbrush, before attaching a new sanding sheet.
The surface of the sanding pad (11) is fitted with a hookand-loop fastening, allowing sanding sheets with a hookand-loop backing to be secured quickly and easily.
Press the sanding sheet (8) firmly onto the underside of the
sanding pad (11).
To ensure optimum dust extraction, make sure that the
punched holes in the sanding sheet (8) are aligned with the
drilled holes in the sanding pad (11).
Selection of the Sanding Plate
The power tool can be fitted with sanding pads of various
hardnesses, depending on the application:
– Extra soft sanding pad: Suitable for polishing and sensit-
ive sanding even on curved surfaces
– Soft sanding pad: Suitable for all sanding work, universal
application
– Hard sanding pad: Suitable for heavy sanding on flat sur-
Remove the sanding sheet or polishing tool. Unscrew the
screw (10) completely and remove the sanding pad (11).
Attach the new sanding pad (11) and retighten the screw so
that it is finger-tight.
Note: Pads with diameters of 150 mm and 125 mm have different carriers. The pads can only be fitted to the right power
tool.
Note: When attaching the sanding pad, make sure that the
teeth of the catch mate with the recesses in the sanding pad.
Note: Damaged sanding pads must only be replaced by an
after-sales service centre authorised to work with Bosch
power tools.
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.
When sanding, it is recommended that you connect the
power tool to a dust extractor. The power tool has no blower
of its own; dust bags cannot be used.
External Dust Extraction
Connect the extraction hose (accessory) either to the extraction pipe (3) or directly to the extraction outlet (4) of the
power tool.
Note: The extraction pipe(3) consists of antistatic material.
If an antistatic extraction hose (accessory) is used in addition, this will prevent an electrostatic charge from building
on the tool, which can happen on occasion when sanding.
When working without dust extraction (e.g. polishing), you
can remove the extraction pipe (3). To do this, press the release button (15) and pull the extraction pipe (3) backward
out of the power tool.
The dust extractor must be suitable for the material being
worked.
When extracting dry dust that is especially detrimental to
health or carcinogenic, use a special dust extractor.
Auxiliary Handle
The auxiliary handle (5) enables comfortable handling and
optimum power distribution, with a high sanding removal
rate in particular.
/ II / II
1 609 92A 62G | (01.12.2020)Bosch Power Tools
English | 7
Secure the auxiliary handle (5) in the thread (13) on either
the right or left of the housing.
To achieve better control of the power tool during sanding
applications, it is recommended that you place your other
hand on the front hand rest. The auxiliary handle (5) may exert lateral forces which could cause the power tool to
wobble. This can result in damage to the surface to be
sanded, as well as the pad.
Corner protection
The corner protection (12) protects the sanding pad when
sanding areas close to edges. Fix the corner protection (12)
onto the power tool from the front. To remove it, pull the
corner protection (12) forward and off by one end.
Operation
Starting Operation
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.
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.
Switching On/Off
u Make sure that you are able to press the On/Off switch
without releasing the handle.
To switch on the power tool, push the on/off switch (2) forward.
To switch off the power tool, push the on/off switch (2)
backward.
Preselecting the orbital stroke rate
You can even preselect the orbital stroke rate during operation using the necessary orbital stroke rate preselection
thumbwheel (1).
1–2Low orbital stroke rate
3–4Medium orbital stroke rate
5–6High orbital stroke rate
The required orbital stroke rate is dependent on the material
and the work conditions and can be determined using practical tests.
The Constant Electronic keeps the orbital stroke rate at no
load and under load virtually consistent, guaranteeing uniform performance.
After working at a low orbital stoke rate for an extended
period, you should operate the power tool at the maximum
orbital stroke rate for approximately three minutes without
load to cool it down.
Selecting the Material Removal Rate
Two operating modes with different material removal rates
are available. For coarse sanding, push the mode selector
switch (14) forward; for fine sanding, push the mode selector switch (14) backward until you hear it click into place.
u Do not change the operating mode while sanding! This
This operating mode has a very high sanding removal rate
and is recommended for machining extremely rough and
non-sensitive surfaces, as well as for rough polishing. The
positive drive control of the sanding pad achieves a consistent eccentric and rotational movement.
Fine Sanding Operating Mode (Free Running)
This operating mode is recommended for handling sensitive
surfaces, as well as for fine polishing. The free running of the
sanding pad achieves a rotational movement that is dependent on the contact pressure with a constant eccentric movement. In addition, the sanding removal rate can be varied by
changing the contact pressure.
Working Advice
u Pull the plug out of the socket before carrying out any
work on the power tool.
u Always wait until the power tool has come to a com-
plete stop before placing it down.
u Do not put the power tool down on its side. This could
permanently warp the sanding pad.
u This power tool is not suitable for bench-mounted use.
It must not be clamped into a vice or fastened to a work-
bench, for example.
Sanding Surfaces
Switch the power tool on, place the entire sanding surface
against the surface of the workpiece and apply moderate
pressure as you move the sander over the workpiece.
The material removal rate and sanding result are primarily
determined by the choice of sanding sheet, the preselected
orbital stroke rate level and the contact pressure.
Only immaculate sanding sheets achieve good sanding performance and make the power tool last longer.
Be sure to apply consistent contact pressure in order to increase the lifetime of the sanding sheets.
Excessively increasing the contact pressure will not lead to
increased sanding performance, rather it will cause more
severe wear of the power tool and of the sanding sheet.
Do not use a sanding sheet for other materials after it has
been used to work on metal.
Use only original Bosch-sanding accessories.
Rough Sanding
Attach a coarse grit sanding sheet.
Apply only light pressure to the power tool so that it runs at a
higher orbital stroke rate and a higher material removal rate
is achieved.
Fine Sanding
Attach a fine grit sanding sheet.
You can reduce the sanding plate orbital stroke rate by
lightly varying the contact pressure or changing the orbital
stroke rate level; the random orbit motion will be retained.
Bosch Power Tools1 609 92A 62G | (01.12.2020)
8 | 中文
Move the power tool with moderate pressure flat on the
workpiece in a circular motion or alternately along and
across it. Do not tilt the power tool in order to avoid sanding
through the workpiece, e.g. veneers.
Switch the power tool off after completing operation.
Polishing
Note: For polishing, you can remove the extraction pipe (3);
this will enable you to handle the tool more easily without
damaging the workpiece.
For polishing weathered lacquers and redressing scratches
(e.g. acrylic glass), the power tool can be fitted with an appropriate polishing tool, e.g. lambswool bonnet, polishing
felt or polishing sponge (accessory).
Select a low orbital stroke rate (level 1–2) when polishing in
order to avoid heating up the surface excessively.
Apply the polish to an area slightly smaller than the area
which you intend to polish. Using the appropriate polishing
tool, work in the polish with either linear or circular movements and with moderate pressure.
Do not allow the polish to dry out on the surface; this may
damage the surface. Do not expose the surface which you intend to polish to direct sunlight.
Clean the polishing tools regularly to ensure good polishing
results. Wash the polishing tools with mild detergent and
warm water; do not use thinning agents.
Clean the extraction outlet (4) regularly; this will ensure perfect dust extraction for subsequent grinding applications.
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.
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 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