Extension Springs are usually loaded by tension exerted at their ends. St Mary’s Spring Company’s Extension springs work completely opposite to that of conventional compression springs as these springs try to bring 2 products together. Extension springs are composed of open hooks or closed loops on the ends so that they can be easily attached to other components.
Springs of extension type are capable of storing and releasing adequate energy required for allowing a component to return to its initial position once force is being applied. These kinds of springs are used mostly in industries like garage doors trampolines and industrial robots.