Noise/Vibration Information; Auxiliary Handle - Bosch GBH 4-32 DFR Professional Notice Originale

OBJ_BUCH-337-008.book Page 14 Thursday, June 16, 2016 2:05 PM
14 | English

Noise/Vibration Information

Sound emission values determined according to
EN 60745-2-6.
Typically the A-weighted noise levels of the product are:
Sound pressure level 93 dB(A); Sound power level
104 dB(A). Uncertainty K =3 dB.
Wear hearing protection!
Vibration total values a (triax vector sum) and uncertainty K
h
determined according to EN 60745-2-6:
Hammer drilling into concrete: a
h
2
Chiselling: a =9 m/s , K =1.5 m/s
h
2
Drilling into metal: a <2.5 m/s , K=1.5 m/s
h
Screwdriving without impact: a
h
The vibration 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 anoth-
er. It may be used for a preliminary assessment of exposure.
The declared vibration emission level represents the main ap-
plications of the tool. However if the tool is used for different
applications, with different accessories or insertion tools or is
poorly maintained, the vibration emission may differ. This
may significantly increase the exposure level over the total
working period.
An estimation of the level of exposure to vibration should also
take into account the times when the tool is switched off or
when it is running 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 pat-
terns.
Assembly
 Before any work on the machine itself, pull the mains
plug.

Auxiliary Handle

 Operate your machine only with the auxiliary handle
10.
The auxiliary handle 10 can be set to any position for a secure
and low-fatigue working posture.
– Turn the bottom part of the auxiliary handle 10 in counter-
clockwise direction and swivel the auxiliary handle 10 to
the desired position. Then retighten the bottom part of the
auxiliary handle 10 by turning in clockwise direction.
Adjusting the Drilling Depth (see figure A)
The required drilling depth X can be set with the depth stop
11.
– Press the button for the depth stop adjustment 9 and in-
sert the depth stop into the auxiliary handle 10.
– Insert the SDS-plus drilling tool to the stop into the SDS-
plus tool holder 1. Otherwise, the movability of the SDS-
plus drilling tool can lead to incorrect adjustment of the
drilling depth.
1 609 92A 2AA | (16.6.16)
– Pull out the depth stop until the distance between the tip of
Selecting the Tool Holder
For hammer drilling, SDS-plus drilling tools that can be insert-
ed into the SDS-plus tool holder 1 are required.
For drilling without impact in wood, metal, ceramic and plas-
2 2
=12 m/s , K=1.5 m/s
tic as well as for screwdriving and tapping, use non-SDS-plus
2
drilling tools (e. g., drill bits with cylindrical shank). A keyless
2
drill chuck is required for such drilling tools.
2 2
<2.5 m/s , K=1.5 m/s
Note: Do not use tools without SDS-plus for hammer drilling
or chiselling! Tools without SDS-plus and their drill chucks are
damaged by hammer drilling or chiselling.
The SDS-plus tool holder 1 can easily be exchanged against
the quick change keyless chuck 13.
Changing the Tool Holder
Dismounting the SDS-plus Tool Holder or the Quick
change keyless chuck (see figure B)
– Pull the lock ring of the tool holder 4 firmly in the direction
After removing, protect the tool holder 1 or the quick change
keyless chuck 13 against contamination. Lightly lubricate the
engaging grooves, if required.
Mounting the SDS-plus Tool Holder or the Quick change
keyless chuck (see figure B)
 Use only model-specific original equipment and pay at-
– Grasp the tool holder 1 or the keyless replacement chuck
– The tool holder 1 or the quick change keyless chuck 13 is
Changing the Tool
With the SDS-plus tool holder, simple and convenient tool
changing is possible without additional aids.
As a requirement of the system, the SDS-plus drilling 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.
The dust protection cap 2 largely prevents the entry of drilling
dust into the tool holder during operation. When inserting the
tool, take care that the dust protection cap 2 is not damaged.
the drill bit and the tip of the depth stop corresponds with
the desired drilling depth X.
The knurled surface of the depth stop 11 must face down-
ward.
of the arrow, hold it in this position and pull off the tool
holder 1 or the keyless replacement chuck 13 toward the
front.
tention to the number of identification grooves. Only
quick-change chucks with two identification grooves
are permitted. When an unsuitable quick-change chuck is
used, the application tool could fall out during operation.
13 completely with your hand. Slide the tool holder 1 or
the keyless replacement chuck 13 with a turning motion
onto the drill chuck mounting until a distinct latching noice
is heard.
automatically locked. Check the locking effect by pulling
the tool holder.
Bosch Power Tools