Bosch PWS 7-100 Operating Instructions Manual page 18

Approved Grinding Tools
All grinding tools mentioned in this operating
manual instruction can be used.
The permissible speed [rpm] or the circumferen-
tial speed [m/s] of the grinding tools used must at
least match the values given in the table.
Therefore, always observe the permissible
rotational/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
Initial Operation
Observe correct mains voltage: The voltage of
the power source must agree with the voltage
specified on the nameplate of the machine.
Equipment marked with 230 V can also be con-
nected to 220 V.
Switching On and Off
To start the machine, press the On/Off switch 1
forward.
To lock-on, press the On/Off switch 1 down at
the front until it engages.
To switch off the machine, release the On/Off
switch 1 or press the rear tip of it down.
Test run!
Check the grinding tool before use. The
grinding tool must be properly mounted
and rotate freely. Perform a test run of at
least 30 seconds without load. Do not use
damaged, out-of-round or vibrating grind-
ing tools.
19 • 1 609 929 F32 • 03.06
[mm]
b d [rpm]
6 22.2 11 000
6 22.2 11 000
6 22.2 11 000
– – 11 000
– – 11 000
– – 11 000
30 M 10 11 000
30 M 14 11 000
Constant Electronic Control
(PWS 8-125 CE/PWS 850 CE/
PWS 9-125 CE)
Constant electronic control holds the speed con-
stant at no-load and under load, and ensures uni-
form working performance.
Overload Protection (PWS 8-125 CE/
PWS 850 CE/PWS 9-125 CE)
When overloaded, the motor comes to a stop.
Relieve the load on the machine immediately and
allow to cool for approx. 30 seconds at the high-
est no-load speed.
[m/s]
80
Speed Preselection
80
(PWS 8-125 CE/PWS 850 CE/
80
PWS 9-125 CE)
80
80 Preselect the required speed using the thumb
wheel 2 according to the table following the sec-
80
tion "Product Specification" (reference values).
45
45
Operating Instructions
Clamp the workpiece if it does not remain
stationary due to its own weight.
Do not strain the machine so heavily that it
comes to a standstill.
Grinding and cutting discs become very
hot while working; do not touch until they
have cooled.
Rough Grinding
Never use a cutting disc for roughing.
Flap Disc
With the flap disc (accessory), curved surfaces
and profiles (contour sanding) can be worked.
Flap discs have a considerably higher service life
than sanding sheets, lower noise level and lower
sanding temperatures.
English - 6
The best roughing results are
achieved when setting the machine
at an angle of 30° to 40°. Move the
machine back and forth with mod-
erate pressure. In this manner, the
workpiece will not become too hot,
does not discolour and no grooves
are formed.