Bosch Professional GBH 2-26 F Manual Original página 15

OBJ_BUCH-2718-002.book Page 15 Wednesday, April 13, 2016 4:17 PM
Noise/Vibration Information
Rotary Hammer
Sound emission values determined according to EN 60745-2-6.
Typically the A-weighted noise levels of the product are
Sound pressure level
Sound power level
Uncertainty K
Wear hearing protection!
Vibration total values a (triax vector sum) and uncertainty K determined according to EN 60745-2-6:
h
Hammer drilling in concrete:
a
h
K
Chiselling:
a
h
K
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
14.
Changing the position of the auxiliary handle
(see figure A)
The auxiliary handle 14 can be set to any position for a secure
and low-fatigue working posture.
– Turn the bottom part of the auxiliary handle 14 in counter-
clockwise direction and swivel the auxiliary handle 14 to
the desired position. Then retighten the bottom part of the
auxiliary handle 14 by turning in clockwise direction.
Pay attention that the clamping band of the auxiliary han-
dle is positioned in the groove on the housing as intended
for.
Bosch Power Tools
GBH 2-26
dB(A)
dB(A)
dB
2
m/s
2
m/s
2
m/s
2
m/s
Adjusting the Drilling Depth (see figure B)
The required drilling depth X can be set with the depth stop
13.
– Press the button for the depth stop adjustment 12 and in-
sert the depth stop into the auxiliary handle 14.
The knurled surface of the depth stop 13 must face down-
ward.
– Insert the SDS-plus drilling tool to the stop into the SDS-
plus tool holder 3. Otherwise, the movability of the SDS-
plus drilling tool can lead to incorrect adjustment of the
drilling depth.
– Pull out the depth stop until the distance between the tip of
the drill bit and the tip of the depth stop corresponds with
the desired drilling depth X.
Selecting Drill Chucks and Tools
For hammer drilling and chiselling, SDS-plus tools are re-
quired that are inserted in the SDS-plus drill chuck.
For drilling without impact in wood, metal, ceramic and plas-
tic as well as for screwdriving, tools without SDS-plus are
used (e.g., drill bits with cylindrical shank). For these tools, a
keyless chuck or a key type drill chuck are required.
Changing the Key Type Drill Chuck (GBH 2-26)
To work with tools without SDS-plus (e.g., drills with cylindri-
cal shank), a suitable drill chuck must be mounted (key type
drill chuck or keyless chuck, accessories).
Mounting the Key Type Drill Chuck (see figure C)
– Screw the SDS-plus adapter shank 18 into a key type drill
chuck 17. Secure the key type drill chuck 17 with the se-
curing screw 16. Please observe that the securing
screw has a left-hand thread.
Inserting the Key Type Drill Chuck (see figure C)
– Clean the shank end of the adapter shank and apply a light
coat of grease.
– Insert the key type drill chuck with the adapter shank into
the tool holder with a turning motion until it automatically
locks.
– Check the locking effect by pulling the key type drill chuck.
English | 15
GBH 2-26 F
91 91
102 102
3 3
17.5 16.5
1.5 1.5
14 14
1.5 1.5
1 609 92A 1RM | (13.4.16)