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Bosch PWS720-125 Manual

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English | 19
Bosch Power Tools 2 609 005 556 | (23.9.11)
Cutting Guide with Dust Extraction Protection Guard
The cutting guide with dust extraction protection guard 17 is
mounted in the same manner as the protection guard for
grinding 6.
Auxiliary Handle
f Operate your machine only with the auxiliary handle 4.
Screw the auxiliary handle 4 on the right or left of the machine
head depending on the working method.
Hand Guard
f For operations with the rubber sanding plate 13 or with
the cup brush/wheel brush/flap disc, always mount the
hand guard 12.
The hand guard 12 is fastened with the auxiliary handle 4.
Mounting the Grinding Tools
f Before any work on the machine itself, pull the mains
plug.
f Grinding and cutting discs become very hot while
working; do not touch until they have cooled.
Clean the grinder spindle 5 and all parts to be mounted.
For clamping and loosening the grinding tools, lock the grind-
er spindle with the spindle lock button 2.
f Actuate the spindle lock button only when the grinder
spindle is at a standstill. Otherwise, the machine may be-
come damaged.
Grinding/Cutting Disc
Pay attention to the dimensions of the grinding tools. The
mounting hole diameter must fit the mounting flange without
play. Do not use reducers or adapters.
When using diamond cutting discs, pay attention that the di-
rection-of-rotation arrow on the diamond cutting disc and the
direction of rotation of the machine (see direction-of-rotation
arrow on the machine head) agree.
See graphics page for the mounting sequence.
To fasten the grinding/cutting disc, screw on the clamping nut
9 and tighten with the two-hole spanner.
f After mounting the grinding tool and before switching
on, check that the grinding tool is correctly mounted
and that it can turn freely. Make sure that the grinding
tool does not graze against the protection guard or oth-
er parts.
Flap Disc
f For operations with the flap disc, always mount the
hand guard 12.
Rubber Sanding Plate
f For operations with the rubber sanding plate 13, al-
ways mount the hand guard 12.
See graphics page for the mounting sequence.
Screw on the round nut 15 and tighten with the two-pin span-
ner.
Cup Brush/Disc Brush
f For operations with the cup brush/wheel brush, always
mount the hand guard 12.
See graphics page for the mounting sequence.
The cup brush/disc brush must be able to be screwed onto
the grinder spindle until it rests firmly against the grinder
spindle flange at the end of the grinder spindle threads. Tight-
en the cup brush/disc brush with an open-end spanner.
Approved Grinding Tools
All grinding tools mentioned in these operating instructions
can be used.
The permissible speed [min
-1
] or the circumferential speed
[m/s] of the grinding tools used must at least match the values
given in the table.
Therefore, observe the permissible rotational/circumferen-
tial speed on the label of the grinding tool.
Dust/Chip Extraction
f Dusts from materials such as lead-containing coatings,
some wood types, minerals and metal can be harmful to
one’s health. Touching or breathing-in the dusts can cause
allergic reactions and/or lead to respiratory infections of
the user or bystanders.
Certain dusts, such as oak or beech dust, are considered
as carcinogenic, especially in connection with wood-treat-
ment additives (chromate, wood preservative). Materials
containing asbestos may only be worked by specialists.
– As far as possible, use a dust extraction system suita-
ble for the material.
– Provide for good ventilation of the working place.
– It is recommended to wear a P2 filter-class respirator.
Observe the relevant regulations in your country for the
materials to be worked.
f Prevent dust accumulation at the workplace. Dusts can
easily ignite.
Operation
Starting Operation
f Observe correct mains voltage! The voltage of the pow-
er source must agree with the voltage specified on the
nameplate of the machine. Power tools marked with
230 V can also be operated with 220 V.
max.
[mm]
[mm]
D b d [min
-1
] [m/s]
115
125
6
6
22.2
22.2
11000
11000
80
80
115
125
–
–
–
–
11000
11000
80
80
75 30 M 14 11000 45
b
d
D
D
D
b
d
OBJ_DOKU-28019-001.fm Page 19 Friday, September 23, 2011 8:28 AM
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