A leaf spring suspension system is one of the earliest systems and features long, arched pieces of steel that flex when needed. The leaf spring system is attached to the frame and a shackle that moves, which allows the length of the spring to vary.
More leaf springs can be added to support more weight. Heavy-duty trucks or other diesel vehicles often feature multiple layers of leaf springs if they have this type of system.
Pictured here is a leaf spring suspension setup, which is the most common type of suspension system used on big-rig trucks, and our main products is manufacuring the brackets shackles to support the leaf spring within suspension system.