Advantages of Parabolic Springs:

Parabolic springs are leaf springs that consists of two or more leaves that only make contact in the center and at the outer ends. Each leaf in a parabolic springs is tapered to be thicker at the center and slowly thins out towards the ends. This is different from the conventional leaf springs wherein the leaves are in contact with each other and in which each leaf has uniform thickness from end to end.

Different Kindes of Trailer Parabolic Spring: