Bosch GWS18V-10 Consignes D'utilisation/De Sécurité page 27

Grinding
Selecting Grinding Wheels
Before
wheel, be certain that its
maximum safe operating speed is not exceed-
ed by the nameplate speed of the grinder. Do
not exceed the recom mended wheel diameter.
Grinding Wheels
(Fig. 18)
Grinding wheels should be carefully selected
in order to use the grinder most efficiently.
Wheels vary in type of abrasive, bond, hard-
ness, grit size and structure. The correct type of
wheel to use is determined by the job. Use disc
grinding wheels for fast grinding of structural
steel, heavy weld beads, steel casting, stainless
steel and other ferrous metals.
Grinding Tips
1. Allow the tool to reach full speed before
touching the tool to the work surface.
2. Apply minimum pressure to the work sur-
face, allowing the tool to operate at high
speed. Grinding rate is greatest when the
tool operates at high speed.
3. Maintain a 10° to 15° angle between the
tool and work surface.
Fig. 18
Excessive or sudden pres-
sure on the wheel will slow
grinding action and put dangerous stresses on
the wheel.
4. Continuously move the tool at a moderate
speed to avoid creating gouges in the work
surface.
5. Remove the tool from work surface before
turning tool off. Allow the tool to stop
rotating before laying it down.
When grinding with a new wheel be certain to
grind while pulling tool backwards until wheel
Operating Instructions
using a grinding
-27-
becomes rounded on its edge. New wheels
have sharp corners which tend to "bite" or cut
into work piece when pushing forward.