Bosch PWS 20 230 J - Инструкция по эксплуатации - Страница 21

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21

Bosch Power Tools

1 609 92A 1GK | (15.6.15)

Lock the grinder spindle with 
the spindle lock button 

1

. To 

tighten the quick-clamping 
nut, firmly turn the grinding 
disc in clockwise direction.

A properly attached, undam-
aged quick-clamping nut can 
be loosened by hand when 
turning the knurled ring in an-
ticlockwise direction.

Never loosen a tight quick-
clamping nut with pliers. Al-
ways use the two-pin span-
ner.

 Insert the two-pin span-

ner as shown in the 
illustration.

Approved Grinding Tools

All grinding tools mentioned in these operating instructions 
can be used.

The permissible speed [min

-1

] or the circumferential speed 

[m/s] of the grinding tools used must at least match the values 
given in the table.

Therefore, observe the permissible 

rotational/circumferen-

tial speed

 on the label of the grinding tool.

Rotating the Machine Head



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

The machine head can be 
rotated with respect to 
the machine housing in 
90 ° steps. In this manner, 
the On/Off switch can be 
brought into a more con-
venient position for spe-
cial working situations, 
e. g., for cutting opera-
tions using the cutting 
guide with dust extrac-

tion protection guard 

24

 or for left-handed persons.

Completely unscrew the four screws. Rotate the machine 
head carefully, 

without removing it from the housing,

 to the 

new position. Screw in and tighten the four screws again.

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.

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.

When operating the machine with power from mobile genera-
tors that do not have sufficient reserve capacity or are not 
equipped with suitable voltage control with starting current 
amplification, loss of performance or untypical behavior can 
occur upon switching on.
Please observe the suitability of the power generator being used, 
particularly with regard to the mains voltage and frequency.

Switching On and Off

To 

start

 the power tool, press the On/Off switch 

2

 forward 

and then down.

To 

lock-on

 the pressed On/Off switch 

2

, push the On/Off 

switch 

2

 further forward.

max.

[mm]

[mm]

D

b

d

[min

-1

]

[m/s]

230

8

22.2

6 600

80

230

–

–

6 600

80

100

30

M 14

8 600

45

27

b

d

D

D

D

b

d

OBJ_BUCH-2397-003.book  Page 21  Monday, June 15, 2015  2:13 PM