Bulk Supply Precision Z-Type Leaf Spring for Vehicle Load Bearing
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Innovative Z-Type Geometry: The defining feature of this spring is its distinct “Z” shaped profile, which is precision-formed to provide superior resistance to longitudinal and lateral forces. This geometry ensures that the spring maintains consistent contact with the mating components, effectively distributing heavy payloads evenly across the chassis and reducing localized stress points.
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High-Precision Manufacturing: Each spring is manufactured to exacting tolerances using advanced CNC forming and pressing equipment. This precision ensures uniform stress distribution and consistent performance across the entire batch, meeting the stringent quality standards required by OEMs and commercial fleets.
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Enhanced Load-Bearing Capability: The Z-type design inherently provides greater leverage and load distribution compared to standard single or multi-leaf configurations. This results in higher payload capacity without increasing the physical size or weight of the spring, allowing for optimized vehicle weight distribution and improved fuel economy.
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Superior Durability & Fatigue Resistance: Constructed from high-tensile alloy steel, the spring undergoes precision shot peening to induce compressive residual stresses in the surface layers, significantly enhancing fatigue life. This process ensures the spring can withstand millions of load cycles in harsh road conditions without premature failure.
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Ideal for heavy-duty trucks, specialized commercial vehicles, agricultural machinery, and industrial transport equipment where space constraints demand compact yet powerful suspension solutions.
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The bulk supply model ensures competitive pricing and consistent availability, making it an excellent choice for large-scale fleet operations and OEM manufacturing partnerships.
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Provides a smoother ride by minimizing abrupt impacts and vibrations, contributing to driver comfort and reducing wear on other vehicle components.
🏭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.
