Bosch GBH 5-40 D - Инструкция по эксплуатации - Страница 12

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 | English 

1 609 92A 28B | (24.10.16)

Bosch Power Tools

Changing the Tool

With the SDS-max tool holder, simpler and easier tool chang-
ing is possible without additional aids.

The dust protection cap 

1

 largely prevents the entry of drilling 

dust into the tool holder during operation. When inserting the 
tool, take care that the dust protection cap 

1

 is not damaged.



A damaged dust protection cap should be changed im-
mediately. We recommend having this carried out by 
an after-sales service.

Inserting (see figure A)

– Clean and lightly grease the shank end of the tool.
– Push back the locking sleeve 

2

 and insert the tool in a twist-

ing manner into the tool holder. Release the locking sleeve 

2

 again in order to lock the tool.

– Check the latching by pulling the tool.

Removing (see figure B)

– Push back the locking sleeve 

2

 and remove the tool.

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 addi-
tives (chromate, wood preservative). Materials containing as-
bestos 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 mate-
rials to be worked.

Operation

Starting Operation



Observe correct mains voltage! The voltage of the pow-
er source must agree with the voltage specified on the 
nameplate of the machine. Power tools marked with 
230 V can also be operated with 220 V.

Setting the operating mode

The operating mode of the power tool is selected using the 
mode selector switch 

3

.

Note: 

Change the operating mode only when the machine is 

switched off! Otherwise, the machine can be damaged.

– Turn the mode selector switch 

3

 to the desired position.

Switching On and Off

– To 

start

 the machine, press the On/Off switch 

4

 and keep 

it pressed.

– To 

switch off

 the machine, release the On/Off switch 

4

.

For low temperatures, the power tool reaches the full ham-
mer/impact capacity only after a certain time.

To save energy, only switch the power tool on when using it.

Setting the Speed/Impact Rate

The electronic control enables stepless speed and impact 
preselection in accordance with the material to be worked.

– Select the impact rate with the thumbwheel 

6

 according to 

the material.

The data in the following table are recommended values.

Overload Clutch



If the tool insert becomes caught or jammed, the drive 
to the drill spindle is interrupted. Because of the forces 
that occur, always hold the power tool firmly with both 
hands and provide for a secure stance.



If the power tool jams, switch the machine off and loos-
en the tool insert. When switching the machine on with 
the drilling tool jammed, high reaction torques can oc-
cur.

Changing the Chiselling Position (Vario-Lock)

The chisel can be locked in 12 positions. In this manner, the 
optimum working position can be set for each application.

– Insert the chisel into the tool holder.
– Turn the mode selector switch 

3

 to the position “Vario-

Lock” (see “Setting the operating mode”, page 12).

– Turn the tool holder to the desired chiselling position.
– Turn the mode selector switch 

3

 to the position “Chisel-

ling”. With this, the tool holder is locked.



For chiselling, the mode selector switch 3  must always 
be set to the position “Chiselling”.

Working Advice



Before any work on the machine itself, pull the mains 
plug.

Position for 

hammer drilling

When the drilling tool does not immediately 
rotate upon switching on, allow the machine 
to run slowly until the drilling tool rotates.

Vario-Lock

 position for adjustment of the 

chiselling position

Position for 

chiselling

Application

Thumbwheel 
Position

Working roughcast/light building materials

Removing tiles

Working brick

Working concrete

1

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OBJ_BUCH-2780-002.book  Page 12  Monday, October 24, 2016  4:35 PM