An emergency cushioning in test cylinders of the 320 series protects not only the cylinder, but also the entire system from any damage caused by unforeseen movements, especially during start-up. It is not suitable for continuous use.
Emergency cushioning in test cylinders restricts the return flow shortly before the end of the stroke motion and cannot be adjusted.
For test cylinders, one distinguishes between the following stroke terms:
Cushioning can only be effective if the stroke is utilized to full capacity.
When starting from the cushioning, the piston area is pressurized via the cushioning gap so that a corresponding start-up delay might occur.
The effectiveness of the emergency cushioning depends, among other things, on the moving mass.
The effectiveness of the emergency cushion depends on factors such as the mass being moved and the travel speed. In the event of overloading, i.e. if the speed or the mass being moved is too high, the cylinder or attached components may be damaged. The effectiveness must therefore be checked for every application case.
A valve block with a start-up function may be useful here.