Disc spring stacks: how series and parallel stacking changes the force you get
A disc spring is a cone shaped washer that carries load along its axis. On its own it does something no coil spring can: it delivers a very high force in a very short installation length. Understanding how disc springs work in stacks is what turns that into a design tool, because the same part can be arranged to give you travel, load, or a curve that changes as it compresses.