Conical spring
As the name suggests, the conical spring is a cone-shaped compression spring where the larger end is designed to work in a bore, while the smaller end works over a rod. Because of its shape it has less solid height than a straight compression spring, particularly when the spring is able to ‘telescope’.
Every conical spring has a variable pitch which achieves a constant spring rate. The coils nest during deflection to provide a height of about two wire diameters – useful when the spring needs to fit in tight places.
