Views: 111 Author: Site Editor Publish Time: 2025-06-18 Origin: Site
Leaf springs are a foundational component in vehicle suspension systems, especially in trucks, trailers, and heavy-duty vehicles. Known for their simple yet durable design, leaf springs have been used for centuries and remain a reliable choice in modern transportation.
A leaf spring is made up of one or more strips of flexible metal, typically steel, stacked in layers and curved slightly into an arc. The spring is usually attached to the vehicle’s frame at both ends, while the axle is mounted at or near the center of the arc. When the vehicle travels over bumps or uneven surfaces, the leaf spring flexes, absorbing the impact and distributing the load evenly.
This deflection allows the suspension to compress and rebound, maintaining tire contact with the road and offering a smoother ride. The combined thickness and length of the metal leaves determine the spring rate, or stiffness, of the suspension.
Robust Load-Bearing Capacity
Ideal for commercial and industrial use, leaf springs can handle high weights and maintain consistent support.
Simplified Design
Their integrated structure allows them to act as both the spring and the linkage, minimizing the need for additional suspension parts.
Cost-Effective
Easier and more affordable to produce and maintain compared to more complex suspension systems.
Low Maintenance Requirements
With minimal moving parts, leaf springs offer long-term durability when properly maintained.
Good Axle Control
They help maintain the position of the axle under load, offering stability in heavy-duty applications.
Increased Weight
Leaf springs are heavier than coil or air suspension systems, which can affect fuel efficiency and agility.
Limited Adjustability
They offer little flexibility in tuning ride height or geometry without replacing parts.
Less Comfort for Light Loads
Because they are built for heavy-duty use, they may result in a harsher ride in lightly loaded vehicles.
Corrosion Over Time
Without proper coating or maintenance, leaf springs may be susceptible to rust and fatigue.
While modern suspensions like air or coil systems offer enhanced comfort and tunability, leaf springs remain the top choice for trailers, trucks, and agricultural vehicles. Their ability to withstand extreme loads and deliver long-lasting performance makes them ideal for fleet operators, logistics providers, and off-road applications.
With over 22 years of experience in the suspension industry, Wondee Auto Parts offers a wide range of durable and precisely engineered leaf springs tailored for commercial vehicles, semi-trailers, and agricultural transport. Our production facilities span 18,000+ m² and produce 50,000+ suspension sets annually, 48% of which are exported globally.
We proudly partner with Thaco Springs—Vietnam's leading leaf spring manufacturer—ensuring top-grade steel quality, excellent load capacity, and high elasticity under JIS B 2710 standards.
Let Wondee help you find the right suspension solution to enhance stability, load distribution, and safety for your vehicles.
