Dust/Chip Extraction; Starting Operation; Switching On/Off - Bosch Professional GSB 18-2 RE Manual Original

Removing the Drill Chuck (see figure E)
Remove the auxiliary handle (12) and set the gear selector
switch (9) to the middle position between first and second
gear.
Insert a steel pin with a diameter of 5 mm and a length of ap-
prox. 60 mm into the hole on the spindle collar to lock the
drill spindle in place. Clamp a hex key (19) in the keyless chuck (1), leading with
the short shaft.
Place the power tool on a firm surface, e.g. a work bench.
Hold the power tool in place and loosen the keyless chuck
(1) by turning the hex key (19) in the rotational direction ➊.
A tightly seated keyless chuck is loosened with a light blow
on the long shaft of the hex key (19). Remove the hex key
from the keyless chuck and completely unscrew the keyless
chuck from the power tool.
Fitting the Drill Chuck (see figure F)
To fit the keyless chuck, perform the same steps in reverse
order.
After successfully fitting the drill chuck, remove the
u
steel pin from the hole again.
The drill chuck must be tightened using a tight-
ening torque of approx. 30–35 Nm.

Dust/Chip Extraction

Dust from materials such as lead-containing coatings, some
wood types, minerals and metal can be harmful to one's
health. Touching or breathing-in the dust can cause allergic
reactions and/or lead to respiratory infections of the user or
bystanders.
Certain dust, such as oak or beech dust, is considered carci-
nogenic, especially in connection with wood-treatment ad-
ditives (chromate, wood preservative). Materials containing
asbestos may only be worked by specialists.
– Provide for good ventilation of the working place.
– It is recommended to wear a P2 filter-class respirator.
Observe the relevant regulations in your country for the ma-
terials to be worked.
Avoid dust accumulation at the workplace. Dust can
u
easily ignite.
Operation

Starting Operation

Pay attention to the mains voltage. The voltage of the
u
power source must match the voltage specified on the
rating plate of the power tool. Power tools marked
with 230 V can also be operated with 220 V.
Products that are only sold in AUS and NZ: Use a resid-
u
ual current device (RCD) with a nominal residual current
of 30 mA or less.
Setting the rotational direction (see figures G–H)
Only push the rotational direction switch (5) when the
u
power tool is not in use.
Bosch Power Tools
The rotational direction switch (5) is used to change the ro-
tational direction of the power tool. However, this is not pos-
sible while the on/off switch (7) is being pressed.
Clockwise rotation: To drill and drive in screws, slide the
rotational direction switch (5) downwards on the left-hand
side and upwards on the right-hand side at the same time.
Anti-clockwise rotation: To loosen and unscrew screws and
bolts, slide the rotational direction switch (5) upwards on
the left-hand side and downwards on the right-hand side at
the same time.
Setting the Operating Mode
Drilling and screwdriving Set the selector switch (4) to the "drilling"
symbol.
Impact drilling
Set the selector switch (4) to the "impact
drilling" symbol.
The selector switch (4) clicks into place and
can also be actuated when the motor is running.
Mechanical gear selection
Only operate the gear selector (9) when the power
u
tool is not in use.
You can preselect two speed ranges with the gear selector
(9).
Gear I:
Low speed range; for screwdriving or working with a large
drilling diameter.
Gear II:
High speed range; for working with a small drilling diameter.
If the gear selector (9) cannot be swivelled all the way to the
stop, turn the drive spindle slightly with the drill.

Switching on/off

To start the power tool, press and hold the on/off switch
(7).
Press the lock-on button (6) to lock the on/off switch (7) in
this position.
To switch off the power tool, release the on/off switch (7);
or, if the switch is locked with the lock-on button (6), briefly
press the on/off switch (7) and then release it.
Adjusting the Speed/Impact Rate
You can adjust the speed/impact rate of the power tool when
it is on by pressing in the on/off switch (7) to varying ex-
tents.
Applying light pressure to the on/off switch (7) results in a
low rotational speed/impact rate. Applying increasing pres-
sure to the switch increases the speed/impact rate.
Preselecting the speed/impact rate
You can preselect the required speed/impact rate using the
speed preselection thumbwheel (8), even during operation.
The required speed/impact rate is dependent on the mater-
ial and the work conditions and can be determined by prac-
tical trials.
English | 15
1 609 92A 7XE | (01.07.2022)