Multi-leaf Double Eye Parabolic Guide Arm for Dongfeng Truck
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Dual-Eye Opening Design: Features precision-forged double eyelets at both connection terminals. This design facilitates secure pin-and-bushing assemblies to both the vehicle chassis and the axle housing, effectively minimizing lateral deflection and ensuring precise axle positioning during heavy payload transit.
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Multi-leaf Parabolic Architecture: Unlike standard linear springs, this component utilizes multiple tapered parabolic leaves (typically 4-6 leaves) that are progressively loaded. This geometry significantly reduces inter-leaf friction and stress peaks, resulting in enhanced durability and a smoother, quieter ride compared to conventional multi-leaf designs.
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Optimized Load Distribution: The parabolic tapering of the leaves allows for a more uniform distribution of bending stresses along the length of the arm. This not only increases the overall fatigue life of the component but also maintains consistent suspension stiffness, crucial for maintaining vehicle stability and tire wear characteristics during long-haul operations.
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Enhanced Durability: Constructed from high-tensile alloy steel and subjected to precision heat treatment processes, the guide arm exhibits exceptional resistance to fatigue cracking and corrosion, even in harsh mining or construction environments.
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Superior Ride Quality: The combination of multi-leaf and parabolic design effectively dampens road irregularities and vibrations, providing a more comfortable driving experience for the driver while reducing cargo damage risks.
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Improved Handling Stability: By maintaining precise geometric alignment under varying loads, the guide arm contributes to consistent camber and toe angles, which is essential for safe high-speed cornering and braking performance.
🏭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.
