User Manual

English | 21
Bosch Power Tools 1 609 92A 2CC | (30.9.16)
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
12 and tighten with the two-pin spanner; see Section “Quick-
clamping Nut ”.
 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.
A plastic part (O-ring) is fitted around
the centring collar of mounting flange
10. If the O-ring is missing or dam-
aged, the mounting flange 10 must be
replaced before resuming operation.
Flap Disc
 For operations with the flap disc, always mount the
hand guard 17.
Rubber Sanding Plate
 For operations with the rubber sanding plate 18, al-
ways mount the hand guard 17.
See graphics page for the mounting sequence.
Note: When loosening the round nut 20, an increased ex-
penditure of force must be taken into account.
Cup Brush/Disc Brush
 For operations with the cup brush/wheel brush, always
mount the hand guard 17.
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.
Note: When loosening the grinding tool, an increased expend-
iture of force must be taken into account.
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.
Rotating the Main Handle
 Before any work on the machine itself, pull the mains
plug.
The main handle 26 can be rotated with respect to the ma-
chine housing toward the left or right in steps of 90°. In this
manner, the On/Off switch can be brought into a more con-
venient position for special working situations, e.g., for cut-
ting operations using the cutting guide with dust extraction
protection guard 22 or for left-handed persons.
Press the handle unlocking button 27 in the direction of the
arrow and at the same time turn the main handle 26 to the re-
quested position until it latches.
Dust/Chip Extraction
 Dust 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 dust can cause
allergic reactions and/or lead to respiratory infections of
the user or bystanders.
Certain dust, such as oak or beech dust, is considered car-
cinogenic, especially in connection with wood-treatment
additives (chromate, wood preservative). Materials con-
taining asbestos may only be worked by specialists.
– As far as possible, use a dust extraction system suitable
for the material.
– Provide for good ventilation of the working place.
– It is recommended to wear a P2 filter-class respirator.
max.
[mm] [mm]
D b d [min
-1
] [m/s]
180
230
8
8
22.2
22.2
8500
6500
80
80
180
230
––
8500
6500
80
80
100 30 M 14 8500 45
D
D
b
d
27
26
OBJ_BUCH-769-010.book Page 21 Friday, September 30, 2016 11:20 AM