Views: 11 Author: Site Editor Publish Time: 2025-10-03 Origin: Site
Leaf springs remain a cornerstone of heavy truck suspension systems, providing a reliable, cost-effective solution for load management and ride stability. Understanding their design, technical parameters, and application scenarios helps fleet operators and transport engineers select the right components for their vehicles. With over 20 years of experience, WONDEE Autoparts produces high-quality leaf springs that meet strict industrial standards and OEM requirements.
Multi-leaf springs consist of several stacked steel leaves that progressively bend under load. Each leaf has a specific thickness and curvature to optimize weight distribution and suspension performance. For instance, the WONDEE Multi Leaf Spring OEM 257658 for VOLVO measures 90x26-1660 mm, offering excellent flexibility for long-haul applications. Such designs reduce axle stress and improve vehicle stability over uneven terrain.
Leaf springs vary by length, width, and thickness depending on the truck's application. Light-duty trucks use smaller leaves, whereas heavy-duty trucks require longer, thicker leaves to withstand higher payloads. At WONDEE, leaf length tolerance reaches ±2 mm, surpassing the industry standard of ±3 mm, while camber clearance stays within ±6 mm, improving alignment and reducing wear.
WONDEE leaf springs comply with ISO 9001-2015 and IATF 16949-2016 standards, ensuring consistent quality and reliability. Steel is sourced from top Chinese mills, guaranteeing material strength and durability. Each spring undergoes fatigue testing exceeding 120,000 cycles, surpassing the standard 100,000 cycles, which ensures longevity in demanding industrial environments.
Our annual production exceeds 35,000 tons, and we offer more than 5,000 SKUs covering a wide range of truck brands and trailer applications. Each component is rigorously inspected, and 80% of parts are manufactured in-house, ensuring complete traceability and consistent performance across the product line.
Leaf springs are critical for different trailer and truck configurations, including flatbed, lowbed, tank, and bulk cement transport vehicles. For instance, the OEM 4212640 spring for IVECO supports medium-heavy loads efficiently, while OEM 1398987 for SCANIA is optimized for long-distance freight operations. Matching the correct spring to vehicle type enhances safety, reduces maintenance, and improves ride quality.
In addition, our range supports modular and heavy-duty trailers. Models like OEM 1547824 for standard trailers or OEM 312740 for BENZ trucks are designed to maintain consistent axle alignment and improve load distribution during heavy transport.
WONDEE leaf springs provide superior stability, durability, and operational efficiency. The high-strength steel and precise manufacturing process reduce suspension sagging and axle stress. These springs also enhance brake performance by maintaining proper wheel contact, which is vital for high-speed or heavily loaded vehicles.
Customization is available through OEM numbers, enabling exact replacements for VOLVO, IVECO, SCANIA, BENZ, ISUZU, TOYOTA, and HINO vehicles. Detailed specifications, dimensions, and OEM cross-references can be explored in our OEM Number PDF.
WONDEE employs a modern production line that includes cutting, heat treatment, and shot peening. Each spring undergoes a meticulous 100% quality inspection process to ensure consistency and performance. Our plant spans 60,000+ m², equipped with over 200 machines and supported by 20 engineers focused on technical improvement.
For an overview of the manufacturing process, please view our production video on YouTube. This demonstrates precision bending, leaf stacking, and stress testing procedures essential for high-performance leaf springs.
| Model / OEM | Size (mm) | Vehicle | Load Capacity | Fatigue Life (cycles) |
|---|---|---|---|---|
| 257658 | 90x26-1660 | VOLVO | Heavy | 120,000+ |
| 4212640 | 100x22-1480 | IVECO | Medium-Heavy | 120,000+ |
| 1398987 | 90x25-1590 | SCANIA | Heavy | 120,000+ |
| 312740 | 90x15-1800 | BENZ | Medium | 120,000+ |
| 51310-780-1 | 90x20-1500 | ISUZU | Medium | 120,000+ |
Multi Leaf Spring, Size: 90x26-1660, OEM 257658 for VOLVO
Multi Leaf Spring, Size: 100x22-1480, OEM 4212640 for IVECO
Heavy truck suspensions increasingly focus on lightweight, durable materials and modular designs to reduce fuel consumption and maintenance costs. Leaf springs continue to complement air suspension systems in hybrid configurations, combining reliability with improved ride comfort. Regulatory standards, such as GB/T 19844-2018 and GB/T 1222-2007, ensure safe and efficient vehicle operation across global logistics networks.
WONDEE offers tailored solutions for various truck models, enabling exact replacements for original equipment. Customers benefit from precise fitment, extended durability, and improved load performance. Our 24-month warranty and comprehensive technical support provide confidence in operational continuity. For inquiries or consultation, please visit our contact page.
For a complete catalog of leaf springs and OEM compatibility, explore the full product page. Detailed specifications, technical drawings, and cross-reference tables support informed selection for fleet operators and maintenance teams.
By integrating expert knowledge, precise manufacturing, and robust material standards, WONDEE leaf springs maintain vehicle stability, enhance transport efficiency, and ensure safety across industrial transportation sectors.
