Carriage Spring

Carriage springs are multi-leaf springs historically used as a primary suspension component in vehicles, particularly in trucks and trailers. They support vehicle weight and absorb road impacts through leaf deflection, providing both spring rate and damping characteristics. Constructed of layered spring steel, carriage springs feature varying leaf lengths and curvatures to achieve progressive spring rates. These springs are typically secured to the axle and vehicle frame via U-bolts and shackle assemblies. Modern applications often utilize variations including slipper springs and helper springs to manage load distribution and enhance ride quality.