Bosch GSB 19-2 REA Professional Manual Original página 9

Assembly
Pull the plug out of the socket before carrying out any
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work on the power tool.
Auxiliary Handle
Do not operate your power tool without the auxiliary
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handle (10).
You can adjust the auxiliary handle (10) to any of 12 posi-
tions in order to achieve a safe work posture that minimises
fatigue.
Turn the lower gripping end of the auxiliary handle (10) in
rotational direction ➊ and push the auxiliary handle (10) for-
ward until you can swivel it into the required position. Then
pull the auxiliary handle (10) back again and turn the lower
gripping end in rotational direction ➋ to tighten it.
Setting the Drilling Depth (see figure A)
You can use the depth stop (27) to set the required drilling
depth X.
Turn the lower gripping end of the auxiliary handle (10) anti-
clockwise and set the depth stop (17).
Pull the depth stop far enough out that the distance between
the drill bit tip and the edge of the depth stop corresponds
to the required drilling depth X.
Then turn the lower gripping end of the auxiliary handle (10)
clockwise to retighten it.
The fluting on the depth stop (17) must face upwards.
Changing the tool
Wear protective gloves when changing tools. The drill
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chuck may heat up significantly when it is used for long
periods.
Keyless chuck (see figure B)
The drill spindle is locked when the on/off switch (7) is not
pressed. This makes it possible to change the application
tool in the drill chuck quickly, conveniently and easily.
Open the keyless chuck (1) by turning it in the direction of
rotation ➊ until the tool can be inserted. Insert the tool.
Firmly tighten the sleeve of the keyless chuck (1) by turning
it by hand in the rotational direction ➋ until it stops clicking.
This will automatically lock the drill chuck.
The lock will disengage again if you turn the sleeve in the op-
posite direction to remove the tool.
Keyed chuck (see figure C)
Open the keyed chuck (21) by turning it until the tool can be
inserted. Insert the tool.
Insert the chuck key (20) into the corresponding holes of the
keyed chuck (21) and clamp the tool evenly.
Screwdriving Tools
You should always use a universal bit holder (19) when using
screwdriver bits (18). Only use screwdriver bits that fit the
screw head.
For screwdriving, make sure the "drilling/impact drilling" se-
lector switch (3) is always set to the "drilling" symbol.
Bosch Power Tools
Changing the drill chuck
Pull the plug out of the socket before carrying out any
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work on the power tool.
Removing the Drill Chuck (see figure D)
Remove the auxiliary handle and set the gear selector switch
(2) to the middle position between first and second gear.
Insert a steel pin with a diameter of 4 mm and a length of ap-
prox. 50 mm into the hole on the spindle collar to lock the
drill spindle in place.
Clamp a hex key (22) 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 (22) in the rotational direction ➊.
A tightly seated keyless chuck is loosened with a light blow
on the long shaft of the hex key (22). Remove the hex key
from the keyless chuck and completely unscrew the keyless
chuck from the machine.
For power tools with a keyed chuck, removal is carried out as
described above.
For power tools with a keyless chuck, an open-ended span-
ner (width across flats 19 mm) can be mounted on the drill
chuck instead of the hex key (22).
Fitting the Drill Chuck (see figure E)
To fit the keyless chuck/keyed chuck, perform the same
steps in reverse order.
The drill chuck must be tightened using a tight-
ening torque of approx. 50–55 Nm.
After successfully fitting the drill chuck, remove the
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steel pin from the hole again.
Dust Extraction System/Dust Container
The dust from materials such as lead paint, some types of
wood, minerals and metal can be harmful to human health.
Touching or breathing in this dust can trigger allergic reac-
tions and/or cause respiratory illnesses in the user or in
people in the near vicinity.
Certain dusts, such as oak or beech dust, are classified as
carcinogenic, especially in conjunction with wood treatment
additives (chromate, wood preservative). Materials contain-
ing asbestos may only be machined by specialists.
– Use a dust extraction system that is suitable for the ma-
terial wherever possible.
– Provide good ventilation at the workplace.
– It is advisable to wear a P2 filter class breathing mask.
The regulations on the material being machined that apply in
the country of use must be observed.
Use the dust extraction attachment only when work-
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ing on concrete, brick and brickwork. Wood chips and
plastic chips can easily cause blockages.
Warning: Danger of fire! Do not work on any metallic
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materials with the dust extraction attachment fitted.
Hot metal chips can ignite parts of the dust container.
English | 9
1 609 92A 55R | (17.07.2019)