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Wheel Care
When grinding, your safety depends, to a large
degree, on the condition of the wheel. A wheel in
poor condition presents the possibility of breaking
apart during rotation and injuring the operator and
others in the area.
Here are some tips to help you avoid breaking
the wheel:
•
Always transport, store and handle wheels
with care. Wheels may be damaged if they
are dropped or if heavy objects are stacked
on them.
•
Select the right grinding wheel for the job.
DO NOT grind material inappropriate for the
wheel type.
•
Only use wheels that are rated for the RPM
of the tool grinder.
Mount the wheel properly (see Installing/
•
Removing Wheel on Page 20).
•
Do not push the tooling into the grinding
wheel with such force that it causes the
grinder to bog down. And do not apply
pressure to stop the wheel after turning the
grinder OFF.
•
Dress the wheel when necessary. Do not
allow it to become glazed (see Truing/
Dressing Wheel on Page 21).
•
Do not store wheels in damp or wet loca-
tions.
•
Do not overtighten the nut when mounting
the wheel.
•
Do not leave the wheel mounted when
machine is not in use.
-18-
Wheel Selection
The Model T10814 accepts Type 6 grinding
wheels with a 20mm bore. Included with the tool
grinder is an aluminum-oxide wheel for grinding
HSS. A diamond wheel is also available for grind-
ing carbide steel (see Accessories on Page 26).
Generally, grinding wheels are marked in a
uniform manner by most major manufacturers.
Understanding these markings will help you
understand the capabilities of various wheels.
Always refer to the manufacturer's grinding rec-
ommendations when selecting a wheel for your
project.
The basic format for wheel numbering is:
Abrasive
Prefix
Type
Type 6
A
The Prefix is the manufacturer's designation for a
particular type of grinding wheel.
The Grit Size refers to the size of the abrasive
grain in the wheel. The smaller the number, the
coarser the wheel. Grit sizes range from 8, which
is a very coarse grit used for roughing, to 220,
which is generally for fine finish work.
Grade is an indication of the hardness of the
wheel—"A" being the softest and "Z" being the
hardest.
Bond Type refers to the type of bonding material
used to hold the abrasive material. Most general-
purpose wheels have a "V" indicating vitrified clay,
which provides high strength and good porosity.
Model T10814 (Mfd. Since 5/15)
Grit
Grade
Bond
Size
Type
Type
60
L
V
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