Page 77 - NORTON cutting-off and grinding wheels - industrial

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COATED ABRASIVES & BEARTEX NON WOVENS
COATEDABRASIVES& BEARTEX
ABRASIVE TYPES
BEARTEX products are manufactured utilising either silicon carbide or aluminium oxide abrasive grain.
These are the same high quality abrasives used in Norton’s world famous coated abrasive products.
SILICON CARBIDE is a hard, sharp, brittle abrasive grain which tends to break down under pressure.
Therefore silicon carbide items are sharper, tend to cut faster and produce finer scratch patterns
on most surfaces.
ALUMINIUM OXIDE is a tough, blocky abrasive which does not tend to break down. Aluminium oxide
is more durable than silicon carbide and tends to last longer, produce less discolouration
on aluminium, and be more aggressive on certain applications such as hardened steel parts.
GRIT SIZE
The ‘grit’ refers to the particle size of the abrasive grain that is impregnated into the nylon web during
manufacture.
Use of large particles result in a Beartex product that acts more aggressively and produces a coarse
surface finish. Small size particles result in a Beartex product that produces fine surface finishes.
DENSITY
The ‘density’ refers to the number of fibres which have been compressed onto the nylon web
material. Most Beartex products are made in a single density designed to meet the requirements
of the intended application. However, several wheel items offer two densities to provide a broader range
of finishing results.
Under identical conditions, ‘hard’ density wheels cut faster, last longer and produce finer finishes
than medium density wheels. ‘medium’ density wheels offer greater conformability and less tendency
to load the workface.
BOND TYPES
Waterproof resins are used throughout the manufacture of Beartex web material to bond the nylon fibres
together and to firmly anchor the abrasive grains throughout the web.
APPLICATION / GRIT RECOMMENDATION
FINE ŒFINISHINGŽ COARSE ŒGRINDINGŽ
Grit 24 30 36 40 50 60 80 100 120 150-180 180-320 +
Cutting-off
& grinding
wheels
Cutting-off
Heavy Duty Grinding
Coated
abrasives
Stock Removal
Blending & Refining
Deburring
Surface Preparation & Cleaning
Finishing
BearTex Coarse Medium Very Fine
BONDEDABRASIVES
SUPERABRASIVES
DIAMONDTOOLS
CLEANING,POLISHING& MASKING
PERSONALPROTECTIONEQUIPMENT
TECHNICALINFORMATION