The DRK242A-II flexural damage tester is used to test the dynamic torsional flexural fatigue resistance of coated fabrics. Instrument use: It is used to test the dynamic anti-torsion and flexural fatigue performance of coated fabrics. Standards compliant: GB/12586-2003, ISO 7854-1995, BS3424, FZ/T01052-1998, etc. Features: 1. Color touch screen display and control, Chinese and English interface, menu operation mode; 2. The rotation and movement of the disc adopts a servo motor control system, with controllable speed and precise displacement; 3. The instrument is equipped with a safety protective cover to avoid accidental injury; 4. The movement of the instrument adopts the cam structure to be reliable and stable; 5. The movement of the instrument is equipped with imported precision guide rails, which is durable; technical parameter: 1. Rotation speed: (200±10) revolutions per minute. 2. Reciprocating speed: (152±4) times/min. 3. Number of testable samples: 4 samples. 4. Rotation angle: (90±2)° 5. Movement stroke: (70±1) mm. 6. Sewing sample size: cylinder with length 190mm and inner diameter 64mm. 7. Weight: 65kg. 8. Power supply: AC220V, 10A. Configuration List: 1. 1 host 2. 4 buckles 2. 1 product certificate 3. Product instruction manual 1 copy 4. 1 delivery note 5. 1 acceptance sheet