The GESTER GT-KB06 EN Sole Flexing Tester (Bennewart Flex Tester) is a high-precision lab apparatus designed to measure the flexing resistance and cut growth/crack initiation of shoe soles under continuous cyclic bending. Engineered for compliance with international safety and quality standards including ISO 20344, ISO 17707, DIN 53543, SATRA TM161, it offers multi-station testing (3 or 6 test positions) with touch-screen controls, precise 90° bending angles, and adjustable flex speeds (125–150 cpm). Ideal for shoe manufacturers, quality control labs, and third-party testing agencies evaluating safety footwear and athletic shoe durability.
The GESTER GT-KB05D Whole Sole ROSS Flexing Tester is an advanced laboratory physical testing instrument specifically designed to measure the flex resistance, crack initiation, and cut growth rate of complete, intact shoe soles made of rubber, PU, PVC, and TPR foam materials. Unlike standard material strip testers, the GT-KB05D evaluates non-cut outsoles directly under continuous 90° rectangular flexing, preserving the natural tread design and structural pattern. Fully compliant with ASTM D1052, SATRA TM60, ISO 5423, and BS 5131, it offers 3 stations, 6 stations, precision surface-oxidized aluminum clamps, and an automated LCD digital counter for high-precision footwear quality control.
This Upper Material Flexing Tester is used to determine the propensity for materials to crack or otherwise fail at flexing creases, but can also be used to assess whether leathers are likely to produce salt spue.
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