Bosch Professional GWS 9-115 S Manual Original página 20

OBJ_BUCH-3020-001.book Page 20 Friday, February 17, 2017 9:19 AM
20 | English
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
11 and tighten it with the combination spanner 5, (see sec-
tion "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.
Mounting flange for grinding spindle
M 14: A plastic part (O-ring) is fitted
around the centring collar of mounting
flange 9. If the O-ring is missing or
damaged, the mounting flange 9 must
be replaced before resuming opera-
tion.
Flap Disc
 For operations with the flap disc, always mount the
hand guard 16.
Rubber Sanding Plate
 For operations with the rubber sanding plate 17, al-
ways mount the hand guard 16.
See graphics page for the mounting sequence.
Screw on round nut 19 and tighten it with the combination
spanner 5.
Cup Brush/Disc Brush
 For operations with the cup brush/wheel brush, always
mount the hand guard 16.
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.
Quick-clamping Nut
For convenient changing of grinding tools without the use of
additional tools, you can use the quick-clamping nut 12 in-
stead of the clamping nut 11.
 The quick-clamping nut 12 may be used only for grind-
ing or cutting discs.
Use only a flawless, undamaged quick-clamping nut 12.
When screwing on, pay attention that the side of the
quick-clamping nut 12 with printing does not face the
grinding disc; the arrow must point to the index mark 22.
1 609 92A 3EC | (17.2.17)
Lock the grinder spindle with
the spindle lock button 1. To
22
tighten the quick-clamping
nut, firmly turn the grinding
disc in clockwise direction.
A properly fastened, undam-
aged quick-clamping nut can
be manually loosened by
turning the knurled ring in an-
ticlockwise direction.
Never loosen a tight quick-
clamping nut using pliers;
always use the combination
spanner. Apply the combina-
tion spanner 5 as shown in
the figure.
Approved Grinding Tools
All grinding tools mentioned in these operating instructions
can be used.
-1
The permissible speed [min ] 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.
max.
[mm] [mm]
D b
115 7 22.2
125 7 22.2
D
115 –
125 –
d
75 30 M 14
b
D
Rotating the Machine Head
 Before any work on the machine itself, pull the mains
plug.
-1
d [min ] [m/s]
11000 80
11000 80
– 11000 80
– 11000 80
11000 45
Bosch Power Tools