Page 465 - NORTON cutting-off and grinding wheels - industrial

TECHNICALINFORMATION
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TECHNICAL INFORMATION
NORaX AN INNOVATIVE TECHNOLOGY
NORaX is the innovative coated abrasive technology
from Norton. The innovation lies in the abrasive
layer: a multi-layer coating of abrasive is engineered
into a 3D pattern. These patterns give a controlled
contact surface between the abrasive and part that
optimises belt performance.
NORaX works like a grinding wheel on a cloth
backing. As the belt wears, dull abrasive particles
are removed from the belt surface to expose a
new layer of sharp abrasives. This continuous
replacement of dulled abrasives results in longer
life, higher cut rates, and a more consistent surface
finish throughout the belt life. Also, contributing to
this higher performance, NORaX is also covered
with a surface powder grinding aid that increases
cut and life while decreasing grinding temperature.
BACKING TYPES
Whether paper, cloth, vulcanised
fibre, a combination or polyester film,
the backing must be smooth enough
for uniform adhesive coating, strong
enough to withstand grinding pressures
and flexible enough to conform to
contours (if necessary). For reasons of
economy, the least expensive backing
compatible with the job requirements
should be selected.
PAPER
The standard paper weights used in coated
abrasives are indicated by a letter code which
appears immediately after the grit size on the
finished product backing. Briefly stated, the lighter
the backing, the greater the degree of flexibility;
the heavier the backing, the greater the resistance
to tearing.
A-weight (70gms)
Light and flexible, A-weight is used primarily for
hand finishing operations both wet and dry.
Grits 80 and finer.
C-weight (120gms)
Stronger and less flexible than A-weight. This
backing is chosen for hand sanding, dry or wet,
and for use on small portable power sanders.
Intermediate through fine sanding. Grits 60 through
180.
D-weight (150gms)
Stronger and less flexible than C-weight. This
backing is also chosen for hand sanding and for use
on small portable power sanders. Coarse through
intermediate sanding. Grits 36 through 80.
E-weight (220gms)
Stronger and less flexible than D-weight, this
backing is used primarily on roll, belt and disc
applications where high resistance to tearing is
needed.
F-weight (300gms)
The strongest, least flexible paper backing utilised.
Used for crankshaft lapping rolls, tannery industry
belts and rolls, and NorZon belts only.
For more information on NORaX please contact your local Sales or Customer Service Representative.
Conventional
(Mono layer)
Aggregate
(Multi-layer, non-uniform contact area)
Engineered abrasives
(Multi-layer, controlled contact area)