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

20

 | English 

1 609 92A 1GK | (15.6.15)

Bosch Power Tools

Protection Guard for Cutting



For cutting with bonded abrasives, always use the pro-
tection guard for cutting 13.



Provide for sufficient dust extraction when cutting 
stone.

The protection guard for cutting 

13

 is mounted in the same 

manner as the protection guard for grinding 

5

.

Cutting Guide with Dust Extraction Protection Guard

The cutting guide with dust extraction protection guard 

24

 is 

mounted in the same manner as the protection guard for 
grinding 

5

.

Auxiliary Handle



Operate your machine only with the auxiliary handle 3.

Screw the auxiliary handle 

3

 on the right or left of the machine 

head depending on the working method.

Vibration-dampening Auxiliary Handle

The vibration-dampening auxiliary handle reduces the vibra-
tions, making operation more comfortable and secure.



Do not make any alterations to the auxiliary handle.

Do not continue to use an auxiliary handle if it is damaged.

Hand Guard



For operations with the rubber sanding plate 20 or with 
the cup brush/wheel brush/flap disc, always mount the 
hand guard 18.

The hand guard 

18

 is fastened with the auxiliary handle 

3

.

Mounting the Grinding Tools



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



Do not touch grinding and cutting discs before they 
have cooled down. 

The discs can become very hot while 

working.

Clean the grinder spindle 

4

 and all parts to be mounted.

For clamping and loosening the grinding tools, lock the grind-
er spindle with the spindle lock button 

1

.



Actuate the spindle lock button only when the grinder 
spindle is at a standstill. 

Otherwise, the machine may be-

come damaged.

Grinding/Cutting Disc

Pay attention to the dimensions of the grinding tools. The 
mounting hole diameter must fit the mounting flange without 
play. Do not use reducers or adapters.

When using diamond cutting discs, pay attention that the di-
rection-of-rotation arrow on the diamond cutting disc and the 
direction of rotation of the machine (see direction-of-rotation 
arrow on the machine head) agree.

See graphics page for the mounting sequence.

To fasten the grinding/cutting disc, screw on the clamping nut 

9

 and tighten with the two-pin spanner; see Section “Quick-

clamping Nut ”.



After mounting the grinding tool and before switching 
on, check that the grinding tool is correctly mounted 
and that it can turn freely. Make sure that the grinding 
tool does not graze against the protection guard or oth-
er parts.

A plastic part (O-ring) is fitted around 
the centring collar of mounting flange 

7

. 

If the O-ring is missing or damaged,

the mounting flange 

7

 must be replaced 

before resuming operation.

Flap Disc



For operations with the flap disc, always mount the 
hand guard 18.

Rubber Sanding Plate



For operations with the rubber sanding plate 20, al-
ways mount the hand guard 18.

See graphics page for the mounting sequence.

Before mounting the rubber sanding plate 

20

, put the 2 spac-

er discs 

19

 onto the grinder spindle 

4

.

Screw on the round nut 

22

 and tighten with the two-pin span-

ner.

Cup Brush/Disc Brush



For operations with the cup brush/wheel brush, always 
mount the hand guard 18.

See graphics page for the mounting sequence.

The cup brush/disc brush must be able to be screwed onto 
the grinder spindle until it rests firmly against the grinder 
spindle flange at the end of the grinder spindle threads. Tight-
en the cup brush/disc brush with an open-end spanner.

Grinding Cup



When working with the grinding cup, mount the special 
protection guard 15.

The grinding cup 

16

 should never project further out of the 

protection guard 

15

 than necessary for the respective grind-

ing application. Adjust the protection guard 

15

 accordingly to 

this dimension.

See graphics page for the mounting sequence.

Screw on clamping nut 

9

 and tighten with two-pin spanner 

17

.

Quick-clamping Nut

For convenient changing of grinding tools without the use of 
additional tools, you can use the quick-clamping nut 

11

 in-

stead of the clamping nut 

9

.



The quick-clamping nut 11 may be used only for grind-
ing or cutting discs.

Use only a flawless, undamaged quick-clamping nut 11.

When screwing on, pay attention that the side of the 
quick-clamping nut 11 with printing does not face the 
grinding disc; the arrow must point to the index mark 27.

OBJ_BUCH-2397-003.book  Page 20  Monday, June 15, 2015  2:13 PM