This test is intended to determine the resistance of a component or material to crack initiation and growth due to repeated flexing. This method is mainly applicable to outsoles of footwear but may also be used with certain other flexible components. A test specimen is bonded, with strong adhesive, to a continuous belt which is driven round repeatedly subjected to a short period of rapid flexing followed by a longer period unflexed which simulates the wear conditions of a footwear outsole. The specimen is flexed for a fixed number of cycles and the number of cracks which form and their severity are recorded.
The machine is equipped with:
– Three free wheeling slightly crowned flexing roller (interchangeable);
– A driven slightly crowned roller;
– A flexible continuous belt of cotton canvas;
– A motor driving the larger roller at a speed of 247 rev./min. so that the belt completes 90 flexing cycles/minute;
– A programmable digital counter
Supplied with: operating instructions, conformity/calibration certificate, canvas belt, 3 interchangeables rollers (60, 90, 120 mm)
Standards: SATRA TM 133
Power consumption: 400 W
Noise: 67 db
Power supply: 220 VAC – 50/60 Hz
