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Grips employing deflection (capstan grips)

A load reduction curve is used for this specimen grip.

The force in the specimen is reduced over the course of the load reduction curve. The required gripping forces can be reduced in the pneumatic control unit. 

Advantages of grips employing deflection

  • With pneumatic end clamping the gripping force remains constant, allowing high specimen throughput.
  • Automatic centering of specimens via guide grooves in the load reduction curve.
  • No transverse forces are transmitted to the load cell via the specimen grips.
  • The symmetrical weight distribution allows the center of gravity of the grips to be near the tensile axis.

Overview of all specimen grips employing deflection