Bosch Professional GSB 780 Manual Original página 19

Noise/Vibration Information
Measured sound values determined according
to EN 60745.
Typically the A-weighted noise levels of the
product are: Sound pressure level 95 dB(A);
Sound power level 106 dB(A). Uncertainty
K =3 dB.
Wear hearing protection!
Vibration total values (triax vector sum) deter-
mined according to EN 60745:
Drilling into metal: Vibration emission value
2
a =3.0 m/s , Uncertainty K =1.5 m/s
h
Impact drilling into concrete: Vibration emission
2
value a =15 m/s , Uncertainty K =2.0 m/s
h
Screwdriving without impact: Vibration emis-
sion value a <2.5 m/s
h
Tapping: Vibration emission value a
Uncertainty K =1.5 m/s
The vibration emission level given in this infor-
mation 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
exposure.
The declared vibration emission level repre-
sents the main applications of the tool. However
if the tool is used for different applications, with
different accessories or poorly maintained, the
vibration emission may differ. This may signifi-
cantly increase the exposure level over the total
working 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 to-
tal 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.
Bosch Power Tools
2
,
2
, Uncertainty K =1.5 m/s
<2.5 m/s
h
2
.
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 accord-
ing to the provisions of the directives
2004/108/EC, 2006/42/EC.
Technical file at:
Robert Bosch GmbH, PT/ESC,
D-70745 Leinfelden-Echterdingen
Dr. Egbert Schneider
Senior Vice President
Engineering
2
,
2
,
2
,
Robert Bosch GmbH, Power Tools Division
D-70745 Leinfelden-Echterdingen
18.02.2010
English | 19
Dr. Eckerhard Strötgen
Head of Product
Certification
2 609 932 762 | (2.3.10)