Masonry / Concrete Cutting - Bosch GWX18V-8 Instrucciones De Funcionamiento Y Seguridad

160992A61E 08-21 GWX18V8.qxp_GWX 9/1/21 8:29 AM Page 26

Masonry / Concrete Cutting

will climb out of the material and
KICKBACK will occur.
With this grinder it is possible to perform
cutting of concrete and masonry materials.
When cutting, work with moderate feed,
adapted to the material being cut.
Always follow precautions for kickback.
Operate the tool with a dust extraction
system and personal dust protection, e.g.
respirator, dust mask, etc. The vacuum used
for this application must be approved for
the extraction of masonry and concrete
dust. Bosch sells suitable vacuum cleaners.
1. Allow the tool to reach full speed before
touching the tool to the work surface.
2. If plunge cutting:
a. Tilt tool forward with wheel lined up
with the cut line and hold the tool by
the grinder body and the auxiliary
handle (Fig. 21).
b. Gradually lower the rear of tool using
the front end of the foot as the hinge
point.
c. When the foot rests flat on the surface
being cut, proceed cutting in forward
direction to end of cut.
3. Always maintain contact between the
guard foot and work piece.
4. Slide the tool forward at a moderate
speed adapted to the material being cut.
Always cut towards the dust extraction
port to maximize dust extraction and
reduce likelihood of kickback (Fig. 22).
5. Apply minimum pressure to the work
surface, allowing the tool to operate at
high speed. Cutting rate is greatest when
the tool operates at high speed.
6. When the cut is completed, remove tool
from work piece before turning off. Allow
wheel to stop rotating before setting tool
down.
Operating Instructions
Never pull the tool
backward since blade
Tip: When performing deep cuts, it is best
to cut in several shallow passes. Each pass
should be only to the segment depth of the
wheel. Masonry dust is abrasive and may
wear and weaken the segment bond.
When cutting especially hard material, e. g.,
concrete with high pebble content, the dry
diamond wheel can overheat and become
damaged. This is clearly indicated by
circular sparking of the rotating dry
diamond wheel. In this case, interrupt the
cutting process and allow the dry diamond
wheel to cool by running the tool for a short
period of time at the maximum speed with
no-load.
Noticeable decreasing work progress and
circular sparking are indications of a dry
diamond wheel that has become dull.
Briefly cutting into abrasive materials (e. g.
brick) can resharpen the wheel.
-26-
FIG. 21
FIG. 22