Inserting/Changing The Circular Saw Blade; Dust/Chip Extraction - Bosch GKT 55 GCE Professional Manual Original

Implement additional safety measures to protect the oper-
ator from the effects of vibration, such as servicing the
power tool and application tools, keeping their hands warm,
and organising workflows correctly.
Fitting
Only use saw blades the maximum permitted speed of
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which is higher than the no-load speed of the power
tool.

Inserting/changing the circular saw blade

Pull the plug out of the socket before carrying out any
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work on the power tool.
Wear protective gloves when fitting the saw blade.
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Danger of injury when touching the saw blade.
Do not use abrasive wheels as the application tool un-
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der any circumstances.
Only use saw blades that match the specifications
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given in this operating manual and that are tested and
marked in accordance with EN 847-1
Selecting the saw blade
You will find an overview of recommended saw blades at the
end of these operating instructions.
Removing the saw blade (see figure A)
Set the maximum cutting depth, (see "Setting the cutting
depth (see figures B–C)", page 18).
To change tools, we recommend that you place the power
tool down on the front side of the motor housing.
– Turn the lever (3) to the front.
– Slide the lock-off switch (2) forwards and press the saw
into the base plate (7) until this engages in the position
for the saw blade change.
– Press and hold the spindle lock button (25).
Do not press the spindle lock button (25) while the
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saw spindle is moving. The power tool may become
damaged if this happens.
– Use the hex key (5) to undo the clamping bolt (20) in ro-
tational direction ➊.
– Remove the clamping flange (21) and the saw blade (22)
from the saw spindle (26).
Fitting the saw blade (see figure A)
Set the maximum cutting depth, (see "Setting the cutting
depth (see figures B–C)", page 18).
To change tools, we recommend that you place the power
tool down on the front side of the motor housing.
– Flip the lever (3) forwards.
– Slide the lock-off switch (2) forwards and press the saw
into the base plate (7) until this locks into the position for
changing the saw blade.
– Clean the saw blade (22) and all the clamping elements
to be fitted.
– Place the saw blade (22) on the mounting flange (23).
The cutting direction of the teeth (direction of the arrow
Bosch Power Tools
on the saw blade) must match the rotational direction of
the arrow on the protective guard (15).
– Attach the clamping flange (21) and screw in the clamp-
ing bolt (20) in rotational direction ➋. Ensure that the
mounting flange (23) and clamping flange (21) are in-
stalled in the correct position.
– Press and hold the spindle lock button (25).
– Use the hex key (5) to tighten the clamping bolt (20) in
rotational direction ➋. The tightening torque should be
6–9 Nm, which corresponds to hand-tight plus ¼ turn.
– Flip the lever (3) back. In doing so, the saw will automat-
ically spring back to its home position.

Dust/chip extraction

The dust from materials such as lead paint, some types of
wood, minerals and metal can be harmful to human health.
Touching or breathing in this dust can trigger allergic reac-
tions and/or cause respiratory illnesses in the user or in
people in the near vicinity.
Certain dusts, such as oak or beech dust, are classified as
carcinogenic, especially in conjunction with wood treatment
additives (chromate, wood preservative). Materials contain-
ing asbestos may only be machined by specialists.
– Use a dust extraction system that is suitable for the ma-
terial wherever possible.
– Provide good ventilation at the workplace.
– It is advisable to wear a P2 filter class breathing mask.
The regulations on the material being machined that apply in
the country of use must be observed.
Avoid dust accumulation at the workplace. Dust can
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easily ignite.
External dust extraction
Connect an extraction hose with a diameter of 35 mm (31)
(accessory) to the chip ejector (18). Connect the extraction
hose (31) to a dust extractor (accessory). You will find an
overview of how to connect various dust extractors at the
end of these operating instructions.
The power tool can be directly connected to the plug socket
of a Bosch all-purpose dust extractor with remote starter.
This dust extractor is started up automatically when the
power tool is switched on.
The dust extractor must be suitable for the material being
worked.
When extracting dry dust or dust that is especially detri-
mental to health or carcinogenic, use a special dust ex-
tractor.
Operation
Pull the plug out of the socket before carrying out any
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work on the power tool.
English | 17
1 609 92A 6HM | (10.05.2021)