Conventional bushings have a main rubber spring with a low damping rubber compound, modified to the required stiffness. In addition, hydro bushings include a fluid channel for adjustable hydraulic damping. The fluid responds to frequency and amplitude, and adjusts the dynamic properties of the bushing depending on the road excitations. Inserted rubber stoppers limit the radial and axial displacement and cover peak loads.
Because bushings are exposed to all types of weather, the outer housing can be made of non-corrosive materials like aluminum.
