Bosch GSB 20-2 - Инструкция по эксплуатации - Страница 13

Impact drill

GSB 20-2

GSB 20-2

Impact rate at no-load speed

rpm

51000

51000

Rated torque (first/second gear)

Nm

5,2/2,0

5,2/2,0

Speed preselection

●

●

Right/left rotation

●

●

Keyed chuck

–

●

Keyless chuck

●

–

Fully automatic spindle lock (Auto-Lock)

●

–

Emergency switch-off

●

●

Spindle collar diameter

43

43

Max. drilling diameter (first/second gear)

– Concrete

mm

18/13

18/13

– Masonry

mm

20/15

20/15

– Steel

mm

13/8

13/8

– Wood

mm

40/25

40/25

Chucking capacity

mm

1.5–13

1.5–13

Weight according to EPTA-Procedure
01:2014

kg

2.6

2.6

Protection class

 / II

 / II

The specifications apply to a rated voltage [U] of 230 V. These specifications may vary at different voltages and in country-specific models.

Noise/vibration Information

Total vibration values a

h

 (triax vector sum) and uncertainty K

determined according to 

EN 60745-2-1

:

Drilling into metal: a

h

=

3.0

 m/s

2

, K=

1.5

 m/s

2

,

Impact drilling into concrete: a

h

=

15

 m/s

2

, K=

2,0

 m/s

2

.

Screwdriving: a

h

<

2.5

 m/s

2

, K=

1.5

 m/s

2

.

Thread cutting: a

h

<

2.5

 m/s

2

, K=

1.5

 m/s

2

.

The vibration level given in these instructions has been
measured in accordance with a standardised measuring pro-
cedure and may be used to compare power tools. It can also
be used for a preliminary estimation of exposure to vibra-
tion.
The stated vibration level applies to the main applications of
the power tool. However, if the power tool is used for differ-
ent applications, with different application tools or poorly
maintained, the vibration level may differ. This can signific-
antly increase the exposure to vibration over the total work-
ing period.
To estimate the exposure to vibration accurately, the times
when the tool is switched off or when it is running but not ac-
tually being used should also be taken into account. This can
significantly reduce the exposure to vibration over the total
working period.
Implement additional safety measures to protect the oper-
ator from the effects of vibration, such as servicing the
power tool and application tools, keeping the hands warm,
and organising workflows correctly.

Assembly

u

Pull the plug out of the socket before carrying out any
work on the power tool.

Auxiliary handle (see figure A)

u

Do not operate your power tool without the auxiliary
handle

(8)

.

You can adjust the auxiliary handle 

(8)

 to any of 12 positions

in order to achieve a safe work posture that minimises fa-
tigue.
Turn the lower gripping end of the auxiliary handle 

(8)

 in ro-

tational direction 

➊

 and push the auxiliary handle 

(8)

 for-

ward until you can swivel it into the required position. Then
pull the auxiliary handle 

(8)

 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 

(9)

 to set the required drilling

depth 

X

.

Turn the lower gripping end of the auxiliary handle 

(8)

 anti-

clockwise and set the depth stop 

(9)

.

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 

(8)

clockwise to retighten it.
The fluting on the depth stop 

(9)

 must face downwards.

English | 

13

Bosch Power Tools

1 609 92A 4L0 | (16.08.2018)