Faqs

Summary FAQ's

Can you adjust the scale beam to ensure it is level with the specimen and turntable?

The scale beam is mounted on a pivotal shaft projecting from an adjustable gage block. This gage block can be raised and lowered, permitting the scale to be raised or lowered to correspond with the thickness of the test specimen.

Is one shear cut (or scratch) enough to evaluate?

Taber recommends three to four shear cuts at least ½" in length, made on the specimen surface approximately 90° to 120° apart from each other with a width ranging between 0.050" to 0.100". Due to the difficulty in cutting grooves of identical width, minor deviations can be compensated for by averaging the measurements

My test results are not consistent?

My test results are not consistent?

What do the graduations on the scale beam represent?

The engraved graduations represent 10 grams per division. The sliding weight provides an adjustment in load from 0 to 500 grams. An additional calibrated weight is also furnished for attachment to the end of the beam to increase its load capacity to a total of 1000 grams.

What is the advantage of a motorized turntable?

A motorized turntable ensures a constant rate of shearing / scratching action, and provides greater accuracy in test results.

What maintenance is required?

All bearings and gears in Taber Shear / Scratch Testers are grease lubricated and sealed at the factory. If properly stored and handled, this precision instrument does not require regular maintenance.

To ensure your test results are accurate, Taber recommends that you have your instrument calibrated on an annual basis.

What size specimens can be tested?

The instrument can test flat materials up to 1/2" thick x 4" square or round.