![Walzenschermaschine](https://www.schroeder-prueftechnik.de/wp-content/uploads/2021/08/Walzenschermaschine.png)
Short description
The roller shear machine is used to determine the resistance to compression fatigue of flexible cellular polyurethane using a dynamic roller compression test. The roller shearer dynamically fatigues a test piece with a constant force that deflects the material both vertically and laterally. It was used for many years in the foam industry to determine percent thickness loss.