Bosch Professional GWS 27-180 PR Manual Original página 23

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
180 8 – 22.2
230 8 – 22.2
180 4.2 – 22.2
230 4.2 – 22.2
180 – –
230 – –
100 27 – M 14
125 30 – M 14
180 26 – M 14
180 20 – 22.2
125 – – M 14
83 – – M 14
180 3.0 7 22.2
s 230 3.0 7 22.2
α
Operation
Do not load the power tool so heavily that it comes to a
u
stop.
Pull the plug out of the socket before carrying out any
u
work on the power tool.
Exercise caution when cutting slots in structural walls;
u
see the "Information on structural design" section.
Clamp the workpiece if it is not secure under its own
u
weight.
If the power tool has been subjected to a heavy load,
u
continue to run it at no-load for several minutes to
cool down the accessory.
Do not use the power tool with a cut-off stand.
u
Bosch Power Tools
[°]
-1
d α [min ] [m/s]
– 8500 80
– 6500 80
– 8500 80
– 6500 80
– – 8500 80
– – 6500 80
– 8500 80
– 6500 80
– 8500 80
– 8500 80
– 8500 80
– 8500 80
> 0 8500 80
> 0 6500 80
Do not touch grinding and cutting discs until they have
u
cooled down. The discs can become very hot while work-
ing.
Working advice
Rough grinding
When rough grinding, always use the protective guard
u
for grinding (6).
Never use cutting discs for rough grinding.
u
When rough grinding, the protective guard for
u
cutting (16) can impact the workpiece and lead to a
loss of control.
The best rough grinding results are achieved with a set angle
of 30° to 40°. Move the power tool back and forth with mod-
erate pressure. This will ensure that the workpiece does not
become too hot or discolour and that grooves are not
formed.
The protective guard for cutting (16) must be used when
u
using bonded discs which are approved for cutting and
grinding.
Surface grinding with flap disc
Always use the protective guard for grinding (6) when
u
grinding with the flap disc.
The flap disc (accessory) enables you to machine curved
surfaces and profiles. Flap discs have a considerably longer
service life, lower noise levels and lower grinding temperat-
ures than conventional grinding discs.
Surface grinding with sanding disc
Always fit the hand guard (22) when working with the
u
rubber sanding pad (23).
Grinding with a sanding disc can be done without a protect-
ive guard.
See the graphics page for fitting instructions.
Screw on the round nut (25) and tighten it with the two-pin
spanner.
Cup brush/disc brush/conical brush
Always use the protective guard for grinding (6) when
u
brushing with disc brushes. Brushing with cup
brushes/conical brushes can be performed without
the protective guard.
Always fit the hand guard (22) when working with the
u
cup brush or conical brush.
The wires of the disc brush can get caught on the pro-
u
tective guard and break, if the maximum permitted di-
mensions of the disc brushes are exceeded.
See the graphics page for fitting instructions.
The cup brush/conical brush/disc brush with M14 thread
must be screwed onto the grinding spindle until it rests
firmly against the grinding spindle flange at the end of the
grinding spindle thread. Tighten the cup brush/conical
brush/disc brush with an open-ended spanner.
To fasten the disc brush with a diameter of 22.22 mm, at-
tach the mounting flange with O-ring (10) to the grinding
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1 609 92A 91W | (13.11.2023)