Bosch GBH 7-46 DE Professional Original Instructions Manual page 17

Vibration total values (triax vector sum) deter-
mined according to EN 60745:
Hammer drilling into concrete: Vibration emis-
sion value a =21 m/s
h
Chiselling: Vibration emission value a
Uncertainty K=1.5 m/s
The vibration emission level given in this informa-
tion sheet has been measured in accordance
with a standardised test given in EN 60745 and
may be used to compare one tool with another. It
may be used for a preliminary assessment of ex-
posure.
The declared vibration emission level represents
the main applications of the tool. However if the
tool is used for different applications, with differ-
ent accessories or poorly maintained, the vibra-
tion emission may differ. This may significantly
increase the exposure level over the total work-
ing period.
An estimation of the level of exposure to vibra-
tion should also take into account the times
when the tool is switched off or when it is run-
ning but not actually doing the job. This may sig-
nificantly reduce the exposure level over the total
working period.
Identify additional safety measures to protect the
operator from the effects of vibration such as:
maintain the tool and the accessories, keep the
hands warm, organisation of work patterns.
Declaration of Conformity
We declare under our sole responsibility that the
product described under "Technical Data" is in
conformity with the following standards or
standardization documents: EN 60745 according
to the provisions of the directives 2004/108/EC,
98/37/EC (until Dec. 28, 2009), 2006/42/EC
(from Dec. 29, 2009 on).
Technical file at:
Robert Bosch GmbH, PT/ESC,
D-70745 Leinfelden-Echterdingen
Dr. Egbert Schneider
Senior Vice President
Engineering
03.07.2007, Robert Bosch GmbH, Power Tools Division
D-70745 Leinfelden-Echterdingen
Bosch Power Tools
2
, Uncertainty K=1.5 m/s
=18 m/s
h
2
.
Dr. Eckerhard Strötgen
Head of Product
Certification
Assembly
Before any work on the machine itself, pull
the mains plug.
2
,
2
,
Auxiliary Handle
Operate your machine only with the auxiliary
handle 6.
The auxiliary handle 6 can be set to any position
for a secure and low-fatigue working posture.
Turn the bottom part of the auxiliary handle 6 in
counterclockwise direction and swivel the auxil-
iary handle 6 to the desired position. Then
retighten the bottom part of the auxiliary handle
6 by turning in clockwise direction.
Changing the Tool
With the SDS-max tool holder, simpler and easier
tool changing is possible without additional aids.
The dust protection cap 1 largely prevents the
entry of drilling dust into the tool holder during
operation. When inserting the tool, take care that
the dust protection cap 1 is not damaged.
A damaged dust protection cap should be
changed immediately. We recommend hav-
ing this carried out by an after-sales service.
Inserting (see figure A)
Clean and lightly grease the shank end of the
tool.
Insert the tool in a twisting manner into the tool
holder until it latches itself.
Check the latching by pulling the tool.
Removing (see figure B)
Push back the locking sleeve 2 and remove the
tool.
English | 17
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