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Flap disc
u Always fit the hand guard (18) when working with the
flap disc.
Rubber Sanding Pad
u Always fit the hand guard (18) when working with the
rubber sanding pad (19).
See the graphics page for fitting instructions.
Slide the rubber sanding pad (19) onto the grinding spindle
(17).
Press the sanding sheet (20) firmly onto the underside of
the rubber sanding pad (19).
Screw on the round nut (21) and tighten with a two-pin
spanner.
Cup brush/disc brush
u Always fit the hand guard (18) when working with the
cup brush or disc brush.
See the graphics page for fitting instructions.
The cup brush/disc brush 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/disc brush with an open-ended spanner.
Carbide Grinding Head
u A grinding head may be used only with a suitable pro-
tective guard.
Approved abrasive tools
You can use all the abrasive tools mentioned in these operat-
ing instructions.
The permissible speed [min
-1
] 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 d [min
-1
] [m/s]
115
125
7
7
22.2
22.2
11,500
11,500
80
80
115
125
–
–
–
–
11,500
11,500
80
80
75 30 M 14 11,500 45
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 carci-
nogenic, especially in connection with wood-treatment ad-
ditives (chromate, wood preservative). Materials containing
asbestos may only be worked by specialists.
– 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 ma-
terials to be worked.
u Avoid dust accumulation at the workplace. Dust can
easily ignite.
Operation
Start-up
Inserting the battery
Push the charged battery(6) into the base of the power tool
until the battery is securely locked.
Switching on/off
To start the power tool, push the on/off switch (4) forward.
To lock the on/off switch (4) in position, push the on/off
switch (4) forward and down until it clicks into place.
To switch off the power tool, release the on/off switch (4);
or, if the switch is locked, briefly push the on/off switch (4)
backward and down and then release it.
u Always check abrasive tools before using them. The
abrasive tool must be fitted properly and be able to
move freely. Carry out a test run for at least one
minute with no load. Do not use abrasive tools that are
damaged, run untrue or vibrate during use. Damaged
abrasive tools can burst apart and cause injuries.
Restart protection
The restart protection feature prevents the power tool from
uncontrolled starting after the power supply to it has been
interrupted.
To restart the tool, set the on/off switch (4) to the off posi-
tion and then switch the power tool on again.
Constant Electronic control
The Constant Electronic keeps the speed at no load and un-
der load virtually consistent, guaranteeing uniform perform-
ance.
Soft start
The electronic soft start limits the torque when the power
tool is switched on and increases the service life of the mo-
tor.
Speed preselection
You can preselect the required speed using the speed
preselection thumbwheel (7), even during operation. The in-
formation in the table below describes the recommended
values.
Bosch Power Tools 1 609 92A 5L4 | (20.12.2019)
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