Rubber fatigue testing machine: (Rubber testing machine) is a double-column rubber fatigue testing machine for setting the number of flexing times and digital display. It is suitable for rubber factories and scientific research units to test various rubber fatigue cracking degrees. Product Description: The rubber fatigue testing machine (rubber testing machine) is a double-column rubber fatigue testing machine for setting the number of flexing times and direct digital display. It is suitable for rubber factories and scientific research units to test various rubber fatigue cracking degrees. Technical Parameter: 1. The reciprocating frequency of the lower gripper: 300±10c/min 2. The maximum adjustable distance between the upper and lower clamps: 200mm 3. The maximum adjustable distance of the eccentric wheel: 50mm 4. The maximum reciprocating stroke of the lower gripper: 100mm 5. Power supply voltage: AC380V±10%