Dust/Chip Extraction - Bosch GBH 18V-26 D Professional Originalbetriebsanleitung

Inserting/removing the keyed chuck
Fitting the keyed chuck (see figure B)
– Screw the SDS-plus shank (20) into a keyed chuck (19).
Secure the keyed chuck (19) using the securing screw
(18). Note that the securing screw has a left-hand
thread.
Inserting the keyed chuck (see figure B)
– Clean and lightly grease the insertion end of the shank.
– Insert the keyed chuck with the adapter shank into the
tool holder with a turning motion until it automatically
locks.
– Check that it is locked by pulling the keyed chuck.
Removing the keyed chuck
– Push the locking sleeve (4) back and remove the keyed
chuck (19).
Changing the Tool
The dust protection cap (3) largely prevents the penetration
of drilling dust into the tool holder during operation. When
inserting the tool, make sure that the dust protection cap (3)
does not become damaged.
Replace a damaged dust protection cap immediately.
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It is recommended that you have use an after-sales
service for this.
Changing the tool (SDS plus)
Inserting SDS-plus application tools (see figure C)
The SDS-plus drill chuck enables you to change the applica-
tion tool easily and conveniently without needing to use ad-
ditional tools.
– Clean and lightly grease the insertion end of the applica-
tion tool.
– Insert the application tool into the tool holder while turn-
ing it until it locks automatically.
– Check the latching by pulling the tool.
As a requirement of the system, the SDS-plus application
tool can move freely. This causes a certain radial run-out at
no-load, which has no effect on the accuracy of the drill hole,
as the drill bit centres itself upon drilling.
Removing SDS-plus application tools (see figure D)
– Push the locking sleeve (4) back and remove the applica-
tion tool.
Changing the tool (without SDS plus)
Inserting the application tool (see figure E)
Note: Application tools that do not have SDS plus must not
be used for hammer drilling or chiselling. Tools without SDS
plus and their drill chucks are damaged by hammer drilling
or chiselling.
– Insert a keyed chuck (19).
– Open the keyed chuck (19) by turning it until the tool can
be inserted. Insert the tool.
Bosch Power Tools
– Insert the chuck key (21) into the corresponding holes of
the keyed chuck (19) and clamp the tool evenly.
– Turn the impact/mode selector switch (12) to the
"drilling" position.
Removing the application tool (see figure F)
– Use the chuck key (21) to turn the sleeve of the keyed
chuck (19) anticlockwise until the application tool can be
removed.

Dust/Chip Extraction

The dust from materials such as lead paint, some types of
wood, minerals and metal can be harmful to human health.
Touching or breathing in this dust can trigger allergic reac-
tions and/or cause respiratory illnesses in the user or in
people in the near vicinity.
Certain dusts, such as oak or beech dust, are classified as
carcinogenic, especially in conjunction with wood treatment
additives (chromate, wood preservative). Materials contain-
ing asbestos may only be machined by specialists.
– Use a dust extraction system that is suitable for the ma-
terial wherever possible.
– Provide good ventilation at the workplace.
– It is advisable to wear a P2 filter class breathing mask.
The regulations on the material being machined that apply in
the country of use must be observed.
Avoid dust accumulation at the workplace. Dust can
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easily ignite.
Operation
Start-up
Inserting the Battery
Use only original Bosch lithium-ion batteries with the
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voltage stated on the type plate of your power tool.
Using other batteries can lead to injuries and pose a fire
hazard.
– Set the rotational direction switch (5) to the middle posi-
tion to avoid unintentionally switching it on.
– Slide the battery (8) all the way into the battery bay .
Setting the Operating Mode
The operating mode of the power tool is selected using the
impact/mode selector switch (12).
– To change the operating mode, press the release but-
ton (11) and turn the impact/mode selector switch (12)
until it clicks into the required position.
Note: Only change the operating mode when the power tool
is switched off. Otherwise, the power tool may become dam-
aged.
Position for hammer drilling into concrete
or stone
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1 609 92A 5GE | (18.11.2019)