Putting Into Operation; Working Instructions - Bosch GBH 2-26 E Operating Instructions Manual

Putting into Operation

Ensure that the mains voltage is correct!
The voltage of the power source must agree with the
value given on the nameplate of the machine. Ma-
chines designated for 230 V can also be operated with
220 V.
Set the Operating Mode
With the operating mode selector switch 11, select the
operating mode of the machine.
Change the operating mode only when the ma-
chine is switched off! Otherwise, the machine can
be damaged.
To change the operating mode, press the locking but-
ton 10 and turn the operating mode selector switch 11
to the desired position until it can be heard to latch.
GBH 2-26 E/RE
For hammer drilling in
concrete and stone
For drilling in steel or
wood, for driving screws
and cutting threads
For adjusting the chiselling
position (Vario-Lock)
For chiselling
Setting the Direction of Rotation
(GBH 2-26 RE/DRE/DFR)
With the right/left rotation switch 7, the rotational di-
rection of the machine can be changed.
Change the direction of rotation only when the
machine is switched off! Otherwise, the machine
can be damaged.
Right rotation: Turn the right/left rotation switch 7 on
both sides to the stop in the position
.
Left rotation: Turn the right/left rotation switch 7 on
both sides to the stop in the position
.
Set the direction of rotation for hammer drilling and
chiselling always for right rotation.
1 619 929 632 • (04.02) T
Switching On/Off
To switch on the machine, press the on/off switch 9.
To lock on, press the on/off switch 9 and lock by
pressing the locking button 8.
To switch off, release the on/off switch 9. When
locked, first press the on/off switch 9 and then release.
Setting the Speed
By increasing or decreasing the pressure on the on/off
switch 9, the speed of the switched-on machine can
be continuously regulated.
Reduced speed of the machine facilitates the starting
of holes (e.g., on smooth surfaces such as tiles), pre-
vents the slipping of the drill and the splintering of the
drilled hole.
Recommended Speed Ranges:
– High speed for hammer drilling in concrete or stone
GBH 2-26 DE/
– Medium speed for drilling in steel and wood
DRE/DFR
– Low speed for driving screws and cutting threads.

Working Instructions

Chiselling (GBH 2-26 DE/DRE/DFR)
The SDS-plus tool can be turned in the tool holder to
various positions to achieve an optimum and low-fa-
tigue working position.
Turn the operating mode selection switch 11 to posi-
tion
er to the desired position.
For chiselling, turn the operating mode selection
switch 11 to position
Screw Driving (see Fig.
To use screwdriver bits, a universal holder with SDS-
plus shaft 27 (accessory) is required.
Clean the adapter shaft and lightly grease the insertion
end before inserting.
Insert the universal holder 27 with a twisting motion
into the tool holder 3 until it locks.
The universal holder locks itself. Check the locking by
pulling on the universal holder.
Insert a screwdriver bit into the universal holder.
To remove the universal holder 27, pull the locking
sleeve 5 to the rear, hold it in this position and remove
the universal holder from the tool holder.
English–6
as well as for chiselling
(Vario-Lock). Then turn the tool in the tool hold-
. This locks the tool.
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