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.

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.


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.






Two Grit Feeder models are available

Grit Feeder - Model 155 offers a hopper capacity of approximately 1,300 grams.  Mounted on the left side of the Taber Abraser, Model 155 utilizes an alignment guide screw to set the position of the instrument. The grit distributor and vacuum removal nozzle heights are adjusted using a thumbscrew.

Grit Feeder - Model 255 offers a hopper capacity of approximately 4,500 grams.  An alignment block is incorporated into the base of the Model 255, to ensure the correct location of the grit feeder in relation to the abraser.  A hand crank controls the telescoping feature allowing precise height adjustments and testing of thicker specimens (up to 40mm with the Taber Abraser Arm Height Extension Kit).  With the ability to mount on either the right or left hand side, two instruments can be used in conjunction with Taber's dual Rotary Platform Abraser.

Note: To use older versions of the Taber Grit Feeder with Taber Abraser Model 5135 or 5155 equipped with the Grit Feeder Control Output connection, a Grit Feeder Control Box (sold separately) is required.


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