Bosch GBH 2-23 REA Professional Notice Originale page 16

16 | English
pare power tools. They may also be used for a preliminary
estimation of vibration and noise emissions.
The stated vibration level and noise emission value repres-
ent the main applications of the power tool. However, if the
power tool is used for other applications, with different ap-
plication tools or is poorly maintained, the vibration level
and noise emission value may differ. This may significantly
increase the vibration and noise emissions over the total
working period.
To estimate vibration and noise emissions accurately, the
times when the tool is switched off or when it is running but
not actually being used should also be taken into account.
This may significantly reduce vibration and noise emissions
over the total working period.
Implement additional safety measures to protect the oper-
ator from the effects of vibration, such as servicing the
power tool and application tools, keeping their hands warm,
and organising workflows correctly.
Assembly
Pull the plug out of the socket before carrying out any
u
work on the power tool.
Auxiliary handle
Do not operate your power tool without the auxiliary
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handle (13).
Make sure that the auxiliary handle is always
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tightened. Otherwise you could lose control of the power
tool when working.
Swivelling the auxiliary handle (see figure A)
You can swivel the auxiliary handle (13) to any angle for a
safe work posture that minimises fatigue.
– Turn the lower gripping end of the auxiliary handle (13)
anticlockwise and swivel the auxiliary handle (13) into
the required position. Then turn the lower gripping end of
the auxiliary handle (13) clockwise to retighten it.
Make sure that the retaining strap of the auxiliary handle
slots into the corresponding groove of the housing.
Selecting drill chucks and tools
For hammer drilling and chiselling ( only with accessory
MV 200), you will need SDS plus tools, which insert into the
SDS plus drill chuck.
For drilling without impact in wood, metal, ceramic and
plastic as well as for screwdriving, tools without SDS plus
are used (e.g. cylindrical shank drill bits). For these tools, a
keyless chuck or a keyed chuck are required.
Changing the drill chuck
Inserting/removing the keyed chuck
You must use a suitable drill chuck (keyed or keyless chuck,
accessories) to work with tools that do not have SDS-plus
(e.g. cylindrical shank drill bits).
1 609 92A 77Y | (24.01.2022)
Fitting the keyed chuck (see figure B)
– Screw the SDS-plus shank (22) into a keyed chuck (21).
Secure the keyed chuck (21) using the securing screw
(20). Note that the securing screw has a left-hand
thread.
Inserting the keyed chuck (see figure C)
– 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 (21).
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 D)
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 E)
– Push the locking sleeve (4) back and remove the applica-
tion tool.
Changing the Keyed Chuck
Inserting the application tool
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 (21).
– Open the keyed chuck (21) by turning it until the tool can
be inserted. Insert the tool.
– Insert the chuck key into the corresponding holes of the
keyed chuck (21) and clamp the tool evenly.
– Set the selector switch (5) to the "drilling" symbol.
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