Multi-leaf Parabolic Leaf Spring for AUMAN Foton Truck Front Suspension
Technical Design & Engineering Advantages
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Parabolic Multi-Leaf Geometry: Utilizes a sophisticated parabolic curve across multiple high-tensile steel leaves (typically 3-5 main leaves with helper leaves). This design significantly reduces inter-leaf friction compared to conventional multi-leaf springs, resulting in lower maintenance costs and extended fatigue life.
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Front Suspension Optimization: Tailored for front axle applications, the spring features a precisely calculated camber and pitch to enhance steering response and directional stability. It effectively absorbs road irregularities, protecting sensitive steering components and improving overall driver control.
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High-Strength Material Composition: Constructed from alloy steels such as 60Si2Mn or 55CrMnA, subjected to advanced heat treatment processes (austempering or quenching and tempering). This ensures exceptional yield strength and impact resistance, capable of withstanding the high-frequency vibrations encountered in long-haul and off-road operations.
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Precision Manufacturing & Surface Treatment: Each leaf undergoes precision shot peening to induce compressive residual stresses, effectively counteracting fatigue crack initiation. The entire assembly is finished with an electrophoretic coating or epoxy powder spray to provide superior corrosion and rust resistance, ensuring longevity in harsh environments.
Application Scope
Key Benefits
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Enhanced Ride Comfort: Reduced vibration transmission to the cab improves driver fatigue management.
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Improved Load Management: Efficiently distributes front axle loads, preventing premature wear of steering linkages.
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Cost-Effective Durability: The combination of parabolic design and multi-leaf reinforcement offers a longer service interval than standard mono-leaf or linear springs, reducing total cost of ownership.
🏭About Zhengzhou Haishuo Automotive Parts Co., Ltd.
Production Capacity: Over 4,000 tons of leaf springs in stock, enabling rapid order fulfillment
Global Reach: Exported to over 100 countries and regions, including North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, the Middle East, and Western Europe
OEM/ODM Services: Custom manufacturing available for private label, OEM, and aftermarket projects
Quality Assurance: Backed by SGS audit certification, with dedicated QA/QC inspectors ensuring every product meets international standards
Comprehensive Product Line: Our catalog includes heavy-duty, conventional, parabolic, and trailer leaf springs, plus complete accessories like U-bolts, bushings, clips, and shackles
Leaf Spring Technical Parameters
| Item | Specification |
|---|---|
| Material | 50CrVA / 51CrV4 / 55CrMnA / 60Si2Mn |
| Width | 60mm – 120mm |
| Thickness | 6mm – 30mm |
| Load Capacity | 500kg – 20,000kg |
| Surface Treatment | Painting / E-coating |
📦Packaging, Shipping & Terms
Packaging: Standard export wooden crates or cartons with protective wrapping to prevent damage during transit
Shipping Ports: Qingdao Port, Tianjin Port and LianYun Port
Lead Time: 30 days (peak season) / 30 days (off season)
Accepted Incoterms: FOB, EXW, DDP, CIF, CFR
Payment Terms: L/C, T/T, D/P, PayPal, Western Union, small-amount payment options available
After-Sales Support: Professional sales and technical team providing order follow-up, product consultation, and after-sales service
Why Choose Our Leaf Springs
- Manufactured using high-strength alloy steel (SUP9 / 60Si2Mn)
- Heat-treated for improved hardness and fatigue resistance
- Shot peening surface treatment for longer service life
- Strict load and fatigue testing before shipment
- OEM interchangeable fitment with Dongfeng systems
- Stable performance under heavy-duty working conditions
FAQ
Q1: Is this part OEM or aftermarket?
A: It is an OEM-compatible replacement designed for Dongfeng truck suspension systems.
Q2: What material is used in this leaf spring?
A: High-strength alloy steel such as SUP9 or 60Si2Mn.
Q3: Can you produce customized leaf springs?
A: Yes, OEM and customized production is available.
Q4: What is your delivery time?
A: Typically 20–30 days depending on order quantity.
Q5: What vehicles is it compatible with?
A: It is suitable for various Dongfeng heavy-duty truck platforms.
Common Problems of Worn Leaf Springs
Vehicle tilting or sagging on one side
Reduced load-carrying capacity
Excessive vibration during driving
Visible cracks or deformation on spring leaves
When to Replace Leaf Springs
Leaf springs should be replaced when fatigue cracks, deformation, or reduced elasticity are observed. Delayed replacement may affect vehicle safety and suspension performance.
Important Notes
This product is an aftermarket replacement part, not an original OEM part. It is designed to fit the specified applications as a direct replacement component.
We recommend professional installation by a qualified technician to ensure proper fit, alignment, and safety.
contact us with your vehicle details or custom requirements, and our team will assist you in finding the right leaf spring solution.
