Bosch GWS Professional 18V-15 C, Original Instructions Manual

Page: 36 / 561

36 | English
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Always secure a grinding/cutting disc using only the
quick-clamping nut (21)
supplied .
Press the spindle lock but-
ton
(3) to lock the grinding
spindle. To tighten the
quick-clamping nut
(21) ,
fold up the bar and turn the
quick-clamping nut firmly
clockwise. Then fold down
the bar to secure the quick-
clamping nut.
It is not suf-
ficient to tighten the disc
along the edge.
Quick-clamping nuts (21)
that are properly secured
and not damaged can be re-
moved by hand. To do this,
fold up the bar and turn the
quick-clamping nut firmly
anticlockwise. If the quick-
clamping nut is stuck, do
not attempt to loosen it with
a tool – always use a two-
pin spanner.
After fitting the mounting
flange and the grinding/cut-
ting disc, the free thread
length of the grinding
spindle must be
at least
4 mm .
Ensure that the abrasive
tool is firmly seated, so that
it does not twist away from the spindle in the runout of the
power tool.
A plastic part (O-ring) is fitted around the cent-
ring collar in the mounting flange
(17) . If the
O-ring is missing or damaged, the mounting
flange (17) must be replaced before operation
can resume.
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After fitting the abrasive tool, check that the abrasive
tool is fitted correctly and can turn freely before
switching on the power tool. Make sure that the abras-
ive tool does not brush against the protective guard or
other parts.
Approved abrasive tools
You can use all the abrasive tools mentioned in these operat-
ing instructions.
The permissible speed [min
-1
] or the circumferential speed
[m/s] of the abrasive tools used must at least match the val-
ues given in the table.
It is therefore important to observe the permissible rota-
tional/circumferential speed on the label of the abrasive
tool.
Max. [mm] [mm] [°]
D b s d α [min
-1
] [m/s]
125
150
7.2
7.2
–
–
22.2
22.2
–
–
11,000
8500
80
80
125
150
4.2
4.2
–
–
22.2
22.2
–
–
11,000
8500
80
80
125
150
–
–
–
–
–
–
–
–
11,000
8500
80
80
75 30 – M 14 – 11,000 80
125
125
150
150
24
19
24
19
–
–
–
–
M 14
22.2
M 14
22.2
–
–
–
–
11,000
11,000
8500
8500
80
80
80
80
125 – – M 14 – 11,000 80
83 – – M 14 – 11,000 80
α
s
125
150
6
6
10
10
22.2
22.2
> 0
> 0
11,000
8500
80
80
125 21 – 22.2 – 11,000 80
Rotating the machine head (see figure F)
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Remove the battery from the power tool before carry-
ing out work on the power tool (e.g. maintenance,
changing tool, etc.). The battery should also be re-
moved for transport and storage.
There is risk of injury
from unintentionally pressing the on/off switch.
The machine head can be rotated in 90° increments. In this
way, the on/off switch can be brought into a more favourable
handling position for particular applications, e.g. for left-
handed tool users.
Completely unscrew the four screws (
➊ ). Rotate the ma-
chine head carefully, without removing it from the hous-
ing , into the new position ( ➋ ). Screw in and retighten the
four screws ( ➌ ).
Dust/Chip Extraction
Dust from materials such as lead-containing coatings, some
wood types, minerals and metal can be harmful to one’s
1 609 92A 6WP | (08.06.2022) Bosch Power Tools