18/05/2026
Leaf spring exploded view
A leaf spring is a type of spring commonly used in vehicles, particularly in older cars, trucks, trailers, and some off-road vehicles. It is made from multiple layers of flat steel strips or "leaves" that are stacked on top of one another and clamped together. The entire assembly is typically mounted on a vehicle's axle and is designed to absorb shocks and vibrations from the road, contributing to a smoother ride.
Here are some key aspects of leaf springs:
- **Structure**: Leaf springs are composed of several flat steel strips of varying lengths, stacked in a semi-elliptical shape. The longest strip is typically the main leaf, which has eyelets at both ends for attachment to the vehicle.
- **Function**: They act as both a spring and a linkage, providing support to the vehicle while allowing for controlled movement of the suspension system. They absorb shocks from bumps and irregularities in the road, reducing stress on the vehicle's frame and chassis.
- **Applications**: Leaf springs are commonly found in heavy-duty vehicles, such as trucks and buses, because they can support heavier loads and offer durability. While modern vehicles have largely shifted to coil springs for suspension, leaf springs remain popular in certain applications for their robustness and load-bearing capacity.
- **Maintenance**: Leaf springs require periodic inspection for wear, cracks, or corrosion, as these issues can compromise the spring's functionality and lead to a rougher ride or even suspension failure.
Overall, leaf springs are a fundamental component of vehicle suspension systems, providing support and stability, especially in vehicles designed to carry heavy loads or traverse rough terrain.