Wheel Selection - Grizzly G0763 Owner's Manual

Wheel Selection

Most grinding wheels from major manufactur-
ers are marked in a somewhat uniform man-
ner. 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 grinding wheel you choose will depend on
several factors related to the operation you plan to
perform. The hardness of the material you will be
grinding and the surface finish you desire are the
two primary factors to consider when selecting a
grinding wheel.
An example of the basic format for wheel number-
ing is shown below. The wheel in this example is
a "36A60LV".
Abrasive
Prefix
Type
36 A
The prefix is a manufacturer-specific designation
and will vary depending on the manufacturer.
Use the charts below as a basic wheel selection
outline for most grinding operations.
Abrasive Type
Abrasive
Type
Aluminum Oxide. For grinding
A
White Aluminum Oxide. For
grinding harder metals (heat
WA
treated steel, carbon steel, alloy
H For grinding high speed steel.
Silicon Carbide. For grinding
C
cast iron and non-ferrous metals.
Ceramic Grain. For extremely
CG hard metals, such as tungsten
Model G0763 (Mfd. Since 6/15)
Grit Bond
Grade
Size Type
60 L V
Application
common steel.
steel, etc.).
carbide.
Grit Size
The ideal grit for an operation depends on a
number of considerations. Use the table below to
choose a grit suitable for your desired results.
Operation Coarse Grit
Consideration (10–46)
Material
Increased
Removal
Surface Finish Rough
Workpiece
Hardness
Width of Cut
Grade
The grade of a wheel is an indicator of its hard-
ness based on an alphabetical scale in which A is
the softest and Z is the hardest.
Operation
Consideration
Workpiece
Hardness
Width of Cut
Feed Rate
Wheel Speed
Bond Type
This refers to the type of bonding material used to
hold the abrasive material. Most general purpose
wheels will have a V indicating vitrified clay is
used, providing high strength and good porosity.
The other most common is B where synthetic res-
ins are used. These are used to grind cemented
carbide and ceramic materials.
Results
Fine Grit
(54–180)
Decreased
Smooth
Soft Hard
Wide Narrow
Wheel Hardness
Soft Hard
A–M N–Z
Hard Soft
Wide Narrow
Slow Fast
Fast Slow
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