Gaman Torsion Tester

In the Gaman torsion tester, even rubber, which has flexible elasticity at room temperature, becomes inactive at low temperatures, gradually hardens, and freezes below the vitrification temperature (Tg) and becomes unable to perform its original function.

On the practical side, this phenomenon will have an important impact, for example, on tires used in extremely cold regions and parts of aircraft flying through the stratosphere.

It is the most popular test method along with the Gehmann torsion tester, which evaluates low temperature characteristics for rubber, which has such an important role, and has also been adopted in JIS K 6261-3 as a low temperature test method for vulcanized rubber and ISO 1432.

• Up to 6 test specimens can now be measured, and since low temperature torsion synthesis can be tested simultaneously, including known test specimens, as recommended by JIS K6261-3, highly reliable data can be obtained.
• The graph of measurement data obtained on the display screen is displayed and recorded not only on the temperature-torsion curve, but also on the temperature-torsion curve.
• In addition to the temperature for each ratio modulus value determined by JIS from the temperature-torsion angle curve obtained in the test, glass transition temperature (Tg), which is an important parameter indicating the low temperature characteristics of rubber, can also be determined with Gehman torsion testing machine software.
• The compact design allows installation even in a small space, so the structure does not take up space.

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