Bosch PWS 20-230 J - Manual (Page 20)

20 | English
1 609 92A 0BD | (5.8.13) Bosch Power Tools
Flap Disc
 For operations with the flap disc, always mount the
hand guard 14.
Rubber Sanding Plate
 For operations with the rubber sanding plate 16, al-
ways mount the hand guard 14.
See graphics page for the mounting sequence.
Before mounting the rubber sanding plate 16, put the 2 spac-
er discs 15 onto the grinder spindle 4.
Screw on the round nut 18 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 14.
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 12.
The grinding cup 13 should never project further out of the
protection guard 12 than necessary for the respective grind-
ing application. Adjust the protection guard 12 accordingly to
this dimension.
See graphics page for the mounting sequence.
Screw on clamping nut 10 and tighten with two-pin spanner
23.
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 10.
 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 24.
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 man-
ner, the On/Off switch
can be brought into a
more convenient position
for special working situa-
tions, e. g., for cutting op-
erations using the cutting
guide with dust extrac-
tion protection guard 20 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.
24
max.
[mm] [mm]
D b d [min -1 ] [m/s]
230 8 22.2 6500 80
230 – – 6500 80
100 30 M 14 8500 45
b
d
D
D
D
b
d
OBJ_BUCH-976-005.book Page 20 Monday, August 5, 2013 3:06 PM