Bosch GWS Professional 19-125 CI Manual Original página 27

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 centring collar in the mounting
flange (10). If the O-ring is missing
or damaged, the mounting flange
(10) must be replaced before opera-
tion 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 (14) in-
stead of the clamping nut (15).
The quick-clamping nut (14) may be used only for
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grinding or cutting discs.
Only use quick-clamping nuts (14) that are in good work-
ing order and not damaged.
When screwing on, make sure that the printed side of the
quick-clamping nut (14) is not facing the grinding disc;
the arrow must be pointing towards the index mark (32).
Press the spindle lock button (2) to
(32)
lock the grinding spindle. To tighten
the quick-clamping nut, turn the grind-
ing disc firmly clockwise.
If the quick-clamping nut has been at-
tached correctly and is not damaged,
you can loosen it by hand by turning
the knurled ring anticlockwise. If the
quick-clamping nut is stuck, do not
attempt to loosen it with pliers – al-
ways 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.
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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.
Bosch Power Tools
Max. [mm] [mm]
D b s
125 7.2 – 22.2
150 7.2 – 22.2
125 4.2 – 22.2
150 4.2 – 22.2
125 – –
150 – –
75 30 – M 14
125 24 – M 14
125 19 – 22.2
150 24 – M 14
150 19 – 22.2
125 – – M 14
82 – – M 14
125 6 10 22.2
s
150 6 10 22.2
α
Rotating the machine head (see figure E)
Pull the plug out of the socket before carrying out any
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work on the power tool.
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 4 screws (➊). Rotate the machine
head carefully, without removing it from the housing, into
the new position (➋). Screw in and retighten the 4
screws (➌).
Dust/Chip Extraction
The dust from materials such as lead paint, some types of
wood, minerals and metal can be harmful to human health.
Touching or breathing in this dust can trigger allergic reac-
tions and/or cause respiratory illnesses in the user or in
people in the near vicinity.
Certain dusts, such as oak or beech dust, are classified as
carcinogenic, especially in conjunction with wood treatment
additives (chromate, wood preservative). Materials contain-
ing asbestos may only be machined by specialists.
– Use a dust extraction system that is suitable for the ma-
terial wherever possible.
English | 27
[°]
-1
d α [min ] [m/s]
– 11500 80
– 9700 80
– 11500 80
– 9700 80
– – 11500 80
– – 9700 80
– 11500 80
– 11500 80
– 11500 80
– 9700 80
– 9700 80
– 11500 80
– 11500 80
> 0 11500 80
> 0 9700 80
1 609 92A 5RE | (06.06.2023)