Bosch GWS Professional 660 Notice Originale page 29

30 | English
Quick-clamping Nut
For convenient changing of grinding tools with-
out the use of additional tools, you can use the
quick-clamping nut 12 instead of the clamping
nut 11.
The quick-clamping nut 12 may be used only
for grinding or cutting discs.
Use only a flawless, undamaged quick-clamp-
ing nut 12.
When screwing on, pay attention that the side
of the quick-clamping nut 12 with printing
does not face the grinding disc; the arrow must
point to the index mark 24.
24
ner. Insert the two-pin spanner as shown in the
illustration.
1 619 P08 849 | (12.3.10)
Lock the grinder spin-
dle with the spindle
lock button 1. To tight-
en the quick-clamping
nut, firmly turn the
grinding disc in clock-
wise direction.
A properly attached,
undamaged quick-
clamping nut can be
loosened by hand
when turning the
knurled ring in anti-
clockwise direction.
Never loosen a tight
quick-clamping nut
with pliers. Always
use the two-pin span-
Approved Grinding Tools
All grinding tools mentioned in these operating
instructions can be used.
The permissible speed [min
ential speed [m/s] of the grinding tools used
must at least match the values given in the table.
Therefore, observe the permissible rotation-
al/circumferential speed on the label of the
grinding tool.
max.
[mm]
D
100
d
115
D
125
b
100
D
115
125
d
70
b 75
D
Rotating the Machine Head
Before any work on the machine itself, pull
the mains plug.
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.
-1
] or the circumfer-
[mm]
-1
b d [min ] [m/s]
6 16.0 11000
6 22.2 11000
6 22.2 11000
– – 11000
– – 11000
– – 11000
30 M 10 11000
30 M 14 11000
The machine head
can be rotated with
respect to the ma-
chine housing in
90° steps. In this
manner, the On/Off
switch can be
brought into a more
convenient posi-
tion for special
working situations,
e.g. for left-handed
persons.
Bosch Power Tools
80
80
80
80
80
80
45
45