Page 65 - Superior Abrasives sold by All Industrial Tool Supply

Surface ConditioningUnitized 63

Layered sheets of nonwoven abrasives are compressed in
resins, forming a dense slab, from which smaller diame-
ter wheels are produced . The density of unitized wheels
allows controlled cutting, cleaning and polishing action
for tighter tolerances .

Understanding Material Grades

Wheel Density Wheel density also translates to 2 8
flexibility and conformity . Lower Softer, more conformable Harder, more durable
densities will not alter workpiece ge- Light Deburring/
ometry, whereas higher densities will Masking/Finishing Cleaning/Finishing Heavy Deburring
work and remove material faster .

Grain Type Aluminum oxide grains are dens-
er, allowing higher pressure, and
recommended for softer ferrous or A S
non-ferrous materials . Silicon car- Durable, long lasting Sharper, finer scratch pattern
bide grains are harder and sharper, Aluminum Oxide Silicon Carbide
yet brittle and used with lighter
pressure on harder materials, like
stainless or titanium .

Grain Size The abrasive grain size used in
each wheel controls the depth and Coarse Medium Fine
refinement of the scratch . Due to (60-80) (100-150) (180-220)
the nonwoven construction, unitized
products will usually finish 2-3 grits Faster cut, rougher finish Reduced cut rate, finer finish
finer than the grain size .

Performance 2 4 6 8
Cut
Life
Finish
Flexibility
Pressure
Density

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