16 | English 1 619 929 774 • 7.5.07
4 Lock ring of the tool holder
5 Mode selector switch
6 Vibration damper
7 On/Off switch
8 Rotational direction switch
9 Button for depth stop adjustment
10 Auxiliary handle
11 Depth stop
12 Quick change keyless chuck*
13 Front sleeve of the quick change keyless chuck*
14 Retaining ring of the quick change
keyless chuck*
15 Extraction sleeve of the dust extraction
attachment*
16 Clamping screw for the dust extraction
attachment*
17 Depth stop of the dust extraction attachment*
18 Telescopic pipe of the dust
extraction attachment*
19 Wing bolt of the dust extraction attachment*
20 Guide pipe of the dust extraction attachment*
*The accessories illustrated or described are not
included as standard delivery.
Technical Data
Noise/Vibration Information
Measured values determined according to
EN 60745.
Typically the A-weighted noise levels of the product
are: Sound pressure level 93 dB(A); Sound power
level 104 dB(A). Uncertainty K=2 dB.
Wear hearing protection!
Vibration total values (triax vector sum) determined
according to EN 60745:
Hammer drilling into concrete: Vibration emission
value a
h
=8 m/s
2
, Uncertainty K=1,5 m/s
2
,
Chiselling: Vibration emission value a
h
=7 m/s
2
,
Uncertainty K=1,5 m/s
2
.
The vibration emission level given in
this information sheet has been
measured in accordance with a standardised test
given in EN 60745 and may be used to compare one
tool with another.
The vibration emission level will vary because of the
ways in which a power tool can be used and may
increase above the level given in this information
sheet. This could lead to a significant underestimate
of exposure when the tool is used regularly in such a
way.
Note: To be accurate, an estimation of the level of
exposure to vibration experienced during a given
period of work should also take into account the times
when the tool is switched off and when it is running
but not actually doing the job. This may significantly
reduce the exposure level over the total working
period.
Declaration of Conformity
We declare under our sole responsibility that this
product is in conformity with the following standards
or standardization documents: EN 60745 according
to the provisions of the directives 89/336/EEC,
98/37/EC.
05.04.2007, Robert Bosch GmbH, Power Tools Division
D-70745 Leinfelden-Echterdingen
Rotary Hammer GBH 4-32 DFR
Professional
Article number 3 611 C32 1..
Rated power input W 900
Rated speed rpm 0–760
Impact rate bpm 0–3600
Impact energy per stroke J 5.0
Chisel positions 12
Tool holder SDS-plus
Lubrication Central permanent
lubrication
Max. drilling dia.
– Concrete (with twist
drill)
– Brickwork (with core
bit)
–Steel
– Wood
mm
mm
mm
mm
32
90
13
32
Weight according to
EPTA-Procedure
01/2003 kg 4.7
Protection class /II
The values given are valid for nominal voltages [U] of
230/240 V. For lower voltage and models for specific coun-
tries, these values can vary.
Please observe the article number on the type plate of your
machine. The trade names of the individual machines may
vary.
Dr. Egbert Schneider
Senior Vice President
Engineering
Dr. Eckerhard Strötgen
Head of Product
Certification
WARNING
OBJ_BUCH-337-001.book Page 16 Monday, May 7, 2007 10:34 AM
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