Bosch GEX 150 - Инструкция по эксплуатации - Страница 13

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13

Bosch Power Tools

3 609 929 C83 | (30.4.14)

Replacing the Sanding Sheet

To remove the sanding sheet 

8

, lift it from the side and pull it 

off of the sanding plate 

5

.

When attaching a new sanding sheet, remove any dust or de-
bris from the sanding plate 

5

, e. g., with a brush.

The surface of the sanding plate 

5

 is fitted with Velcro backing 

for quick and easy fastening of sanding sheets with Velcro ad-
hesion.

Press the sanding sheet 

8

 firmly against the bottom side of 

the sanding plate 

5

.

To ensure optimum dust extraction, pay attention that the 
punched holes in the sanding sheet match with the holes in 
the sanding plate.

Selection of the Sanding Plate

Depending on the application, the machine can be equipped 
with sanding plates of different hardness:

– Sanding plate, extra soft: Suitable for polishing and sensi-

tive sanding, incl. on convex surfaces.

– Soft sanding plate: Suitable for all sanding applications 

and general-purpose use.

– Hard sanding plate: Suitable for high sanding capacity on 

flat surfaces.

Replacing the Sanding Plate

Note: 

Replace a damaged sanding plate 

5

 immediately.

Pull off the sanding sheet or polishing tool. Completely un-
screw the screw 

6

 and take off the sanding plate 

5

. Attach the 

new sanding plate 

5

 and tighten the screw again.

Note: 

When attaching the sanding plate, pay attention that 

the toothing of the drive element engage into the openings of 
the sanding plate.

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.
– As far as possible, use a dust extraction system suitable 

for the material.

– 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.

External Dust Extraction

Connect the vacuum hose (accessory) directly at the extrac-
tion outlet piece 

12

.

Note: 

The extraction outlet piece 

12

 is made of anti-static ma-

terial. When additionally using an anti-static vacuum hose (ac-
cessory), electrostatic charging of the machine, which can 
occur in rare cases while sanding, is prevented.

For applications without dust extraction (e. g., polishing), the 
extraction outlet piece 

12

 can be removed. For this, unscrew 

the screw 

13

 with the Allen key 

7

 (accessory) and remove the 

extraction outlet piece 

12

 from the housing.

The vacuum cleaner must be suitable for the material being 
worked.

When vacuuming dry dust that is especially detrimental to 
health or carcinogenic, use a special vacuum cleaner.

Auxiliary Handle

The auxiliary handle 

10

 enables convenient handling and op-

timal distribution of power, especially at high removal rates.

Screw the auxiliary handle 

10

 either at the right or the left side 

of the housing into the thread 

1

.

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.

Switching On and Off

To 

start

 the machine, push the On/Off switch 

11

 forwards.

To 

lock

 the On/Off switch 

11

, press the On/Off switch 

11

down at the front until it latches.

To 

switch off

 the power tool, release the On/Off switch 

11

 or, 

if it is locked, briefly push down the back of the On/Off switch 

11

 and then release it.

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

Preselecting the Orbital Stroke Rate

With the thumbwheel for preselection of the orbital stroke 
rate 

14

, you can preselect the required orbital stroke rate, 

even during operation.

The required stroke rate depends on the material and the 
working conditions and can be determined through practical 
testing.

The constant electronic control keeps the stroke rate almost 
constant under no-load or load conditions and ensures a uni-
form working performance.

After longer periods of working at low stroke rate, allow the 
machine to cool down by running it for approx. 3 minutes at 
maximum stroke rate with no load.

1 – 2

Low stroke rate

3 – 4

Medium stroke rate

5 – 6

High stroke rate 

OBJ_BUCH-522-005.book  Page 13  Wednesday, April 30, 2014  3:07 PM