The Taber® Grit Feeder Attachment is used in conjunction with the
Taber Rotary Platform Abraser (Abrader) to evaluate three-body
abrasion caused by the destructive action of fine, hard
particles. Originally referenced as the Frick-Taber test, this
instrument has been used to determine the wear resistance of
flooring products with smooth surfaces.
Description
The Grit Feeder is a freestanding instrument that requires a
Taber Rotary Platform Abraser (not included) to conduct testing.
The grit distributor nozzle is positioned over the Taber Abraser
specimen in front of the right abrasive wheel. During the test,
abrasive grit particles are deposited uniformly and continuously
onto the specimen surface. As the specimen holder rotates, the
loose grit particles pass under a pair of S-39 Leather-Clad
Wheels. The resulting rolling action of the particles serves as
the abradant and contributes to the physical breakdown of the
material. The vacuum hose from the Taber Abraser is inserted into
the base of the Grit Feeder allowing a pickup tube to be
positioned such that grit particles and debris are removed. The
operation of the grit feeder is controlled through the Taber
Abraser, ensuring that the turntable, grit distribution and
vacuum suction are actuated at the same time.
IMPORTANT: Due to the type & quantity of abrasive media that is
used during this testing, Taber recommends that you frequently
inspect the vacuum filter and collection bag and replace when
necessary.
Abradants
The standardized abradant supplied with Taber's Grit Feeder is a
#240 aluminum oxide grit particle (Model S-41). Produced
specifically for Taber Industries, this aluminum oxide has
tighter controls for both particle size analysis and bulk density
properties compared to "off-the shelf" aluminum oxide. To
calibrate the rate of flow and to measure the abrasive rate of
the abradant, S-38 Standardization Plates are utilized.
Prior to use, the abrasive grit should be screened through U.S.
Standard Sieve No. 80 to break up any conglomerates and to remove
any oversized or foreign particulate matter. Afterwards, dry the
grit for 1 hour at approximately 82° C (180° F). Allow to cool in
a temperature and humidity controlled room prior to
use.
To satisfy test method EN 14354 and ISO 24338 Method B, Alodur
ESK 240 aluminum oxide grit should be used. Contact Taber
Industries for additional information.