Bosch GWS 9-115 S Professional Notice Originale page 24

24 | English
nut (19) or quick-clamping nut (20), the use of intermediate
layers is not necessary.
To secure the grinding/cutting disc, place the mounting
flange with O-ring (12) on the grinding spindle (22) and
screw on the clamping nut (19). Ensure the alignment of the
clamping nut (19) depending on the grinding/cutting disc
used (see figures in the front part of the operating manual),
and tighten them with the two-pin spanner (see " Quick-
clamping nut ", page 24).
After fitting the abrasive tool, check that the abrasive
u
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.
A plastic part (O-ring) is fitted around the cent-
ring collar in the mounting flange (12). If the
O-ring is missing or damaged, the mounting
flange (12) must be replaced before operation
can resume.
Quick-clamping nut
To change the abrasive tool easily without having to use any
additional tools, you can use the quick-clamping nut (20) in-
stead of the clamping nut (19).
The quick-clamping nut (20) may be used only for
u
grinding or cutting discs.
Only use quick-clamping nuts (20) that are in good work-
ing order and not damaged.
When screwing on, make sure that the printed side of the
quick-clamping nut (20) is not facing the grinding disc;
the arrow must be pointing towards the index mark (31).
(31)
1 609 92A 76H | (22.11.2022)
Press the spindle lock but-
ton (2) to lock the grinding
spindle. To tighten the
quick-clamping nut, turn
the grinding disc firmly
clockwise.
If the quick-clamping nut
has been attached correctly
and is not damaged, you
can loosen it by hand by
turning the knurled ring an-
ticlockwise. If the quick-
clamping nut is stuck, do
not attempt to loosen it
with pliers – always use
the two-pin spanner. Posi-
tion the two‑pin spanner as
shown in the figure.
Approved abrasive tools
You can use all the abrasive tools mentioned in these operat-
ing instructions.
-1
The permissible speed [min ] 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
115 7 – 22.2
125 7 – 22.2
115 3 – 22.2
125 3 – 22.2
115 – –
125 – –
75 30 – M 14
115 24 – M 14
115 19 – 22.2
125 24 – M 14
125 19 – 22.2
125 – – M 14
83 – – M 14
115 2.4 10 22.2
s 125 2.4 10 22.2
α
Rotating the machine head
Pull the plug out of the socket before carrying out any
u
work on the power tool.
[°]
-1
d α [min ] [m/s]
– 11,000 80
– 11,000 80
– 11,000 80
– 11,000 80
– – 11,000 80
– – 11,000 80
– 11,000 80
– 11,000 80
– 11,000 80
– 11,000 80
– 11,000 80
– 11,000 80
– 11,000 80
> 0 11,000 80
> 0 11,000 80
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 ap-
plications, e.g. for left-
handed tool users.
Completely unscrew the
four screws. Rotate the ma-
chine head carefully,
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