The MZ-4008A Tear Fatigue Tester is suitable for setting the angle of a solid strip of 200mm × 25mm × 12.5mm (L × W × T) at a certain frequency under normal or high temperature conditions. 
Twist a certain number of times to evaluate the ability of the strip to resist twisting fatigue. 
Technical parameters: 
*Lower holder oscillating frequency: 60 times/minute to 300 times/minute 
* Distance between the upper and lower holders: 170mm 
* The torsion angle can be adjusted from 5° to 45°. 
* Counting range: 0~9999 9999 
* Maximum temperature of high temperature box is 150°C; control accuracy is ±1°C