Bosch GBM 32-4 0.601.130.203 - Инструкция по эксплуатации - Страница 13

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Bosch Power Tools

1 609 92A 0NC | (19.5.14)

Robert Bosch GmbH, Power Tools Division
70764 Leinfelden-Echterdingen, GERMANY
09.04.2014

Assembly



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

Auxiliary Handle



Operate your machine only with the auxiliary handle 5.

Screw the auxiliary handle 

5

 into the thread 

4

 on the gear 

head.

Changing the Tool (see figure A)

Drilling tools with a MK3 morse taper can be inserted directly 
into the tool holder 

1

. For drill bits with MK2 morse taper, use 

the reducing sleeve 

10

.

Pay attention that the morse cone and the morse taper are 
free of grease.

The use of drilling tools with cylindrical shank is possible with 
the key chuck 

12

. For this, screw the tapered arbor 

11

 onto 

the key chuck 

12

 and insert the tapered arbor with the reduc-

ing sleeve 

10

 into the tool holder 

1

.



Do not exert any force when inserting the morse taper 
or the tapered arbor. 

This can damage the tool holder and 

the inserted tool.

Place the drift 

9

 into the opening 

2

 in such a manner that the 

rounded-off side faces to the auxiliary handle 

5

.

If the drift 

9

 cannot be inserted through the drive spindle, turn 

the tool insert a little.
Press the drift 

9

 toward the auxiliary handle 

5

 and release the 

tool insert from out of the tool holder.

Dust/Chip Extraction



Dusts 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 dusts can cause 
allergic reactions and/or lead to respiratory infections of 
the user or bystanders.
Certain dusts, such as oak or beech dust, are considered 
as carcinogenic, especially in connection with wood-treat-
ment additives (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 mate-
rials to be worked.



Prevent dust accumulation at the workplace. 

Dusts can 

easily ignite.

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.

Gear selection, mechanical



Actuate the gear selector 3 only when the machine is at 
a standstill.

Four speed ranges can be preselected with the gear selector 

3

. Press the gear selector 

3

 down, slide it to the requested 

setting according to the gearing diagram and allow it to en-
gage at the respective end position.

If the gear selector 

3

 cannot be slid to the stop, lightly rotate 

the drive spindle via the drill bit.

Switching On and Off

To 

start

 the machine, press the On/Off switch 

7

 and keep it 

pressed.

To lock the 

pressed

 On/Off switch 

7

, press the lock-on button 

6

.

To 

switch off

 the machine, release the On/Off switch 

7

 or 

when it is locked with the lock-on button 

6

, briefly press the 

On/Off switch 

7

 and then release it.

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

Henk Becker
Executive Vice President
Engineering

Helmut Heinzelmann
Head of Product Certification
PT/ETM9

1st gear:

Low speed range; for working with 
large drilling diameter.

2nd gear:

Average speed range.

3rd gear:

Average speed range.

4th gear:

High speed range; for working with 
small drilling diameter.

OBJ_BUCH-506-004.book  Page 13  Monday, May 19, 2014  9:32 AM