Views: 12 Author: Site Editor Publish Time: 2025-09-26 Origin: Site
Leaf springs are fundamental components of heavy-duty truck suspensions, providing support, stability, and shock absorption. Understanding their types, specifications, and applications ensures efficient cargo transport and extended vehicle lifespan.
A leaf spring is an elastic element composed of multiple steel leaves of varying lengths. It transmits forces between the axle and chassis, absorbs shocks from uneven roads, and maintains vehicle alignment. Leaf springs are widely used in heavy-duty trucks, pick-ups, semi-trailers, lowbed trailers, flatbed trailers, oil tank trailers, and agricultural machinery.
WONDEE OEM Leaf Spring – High fatigue life for industrial trucks
Leaf springs can be classified as conventional, parabolic, Z-type air linkers, TRA springs, and other specialized designs. Each type addresses specific load capacities, vehicle types, and ride quality requirements.
Understanding axle configurations helps optimize load distribution and vehicle stability. A 2-axle truck provides simpler maintenance and lower cost, suitable for moderate payloads. A 3-axle configuration increases load capacity, enhances stability during long hauls, and distributes weight more evenly, reducing wear on tires and road surfaces.
Leaf springs installed on 2-axle and 3-axle truck suspensions
Leaf springs support multiple suspension systems, including:
Parabolic leaf springs: Reduced weight, improved ride comfort, and extended fatigue life.
Conventional multi-leaf springs: High load-bearing capacity, suitable for heavy-duty applications.
Bogie suspensions: Designed for multi-axle trailers, offering enhanced stability and better load distribution.
Air suspensions: Smooth ride, adjustable ride height, reduced cargo damage, but higher maintenance costs.
Comparison of air suspension and parabolic leaf spring setups
Leaf springs enhance cargo transport efficiency by providing:
High load-bearing capacity suitable for trucks and trailers of various sizes
Improved stability on uneven or long-distance roads
Efficient shock absorption, reducing cargo damage
Low maintenance costs and high durability
Compatibility with OEM and aftermarket suspensions
| Leaf Spring Type | Number of Leaves | Weight (kg) | Material Section (mm) | OEM Applications |
|---|---|---|---|---|
| TRA2726 | 3 | 26.27 | 20×76 | Heavy-duty trucks, semi-trailers |
| TRA3343 | 10 | 69.02 | 11×100 | Commercial trucks |
| TRA2705 | 7 | 44.83 | 13×75 | Pick-up trucks |
| TRA2256 | 7 | 41.21 | 13×75 | Light-duty trailers |
Leaf springs play a vital role in worldwide logistics, supporting trucks and semi-trailers across North America, Europe, and Asia. The trend towards heavier loads, modular trailers, and high-efficiency logistics requires durable, fatigue-resistant suspension components. OEM customization ensures adaptability to regional regulations and vehicle specifications.
Besides leaf springs, industrial transport uses various semi-trailer types:
Flatbed trailers: Carry oversized or bulk cargo efficiently.
Lowbed trailers: Transport heavy machinery with low center of gravity.
Fence/Sidewall trailers: Provide protection for loose cargo.
Tank trailers: Suitable for oil, gas, and liquid transport.
Bulk cement trailers: Specialized for dry bulk materials.
Car transport trailers: Designed for automotive logistics.
Different trailers require corresponding leaf springs and suspension setups to maintain stability, load distribution, and road safety.
WONDEE provides OEM leaf springs with advanced quality control, CNC processing, heat treatment, and fatigue testing. Customers can customize dimensions, camber, material grade, and coatings to match specific truck and trailer configurations. The company ensures 12-month warranty, 100% quality inspection, and full technical support.
For more information on the WONDEE Leaf Springs Project or to place an order, visit the product page: OEM Leaf Springs for USA Trucks and Suspensions.
WONDEE provides technical guidance, on-site support for VIP clients, and lifelong service for all leaf spring products. For inquiries, please visit Contact Us.
