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| Parameter Information Table | ||
| Parameter Item | Precise Value | Remarks |
| Part Number | WG9925688101 | Sinotruk's unique original part number, no substitute number |
| Wire Diameter | 60Si2MnA Alloy Spring Steel | - |
| Material | 60Si2MnA High-Quality Alloy Spring Steel | Tensile Strength ≥1800MPa, Yield Strength ≥1600MPa |
| Rated Stiffness | 125N/mm | Original factory dynamic design matching value |
| Maximum Working Load | 3800N | Safety Factor 1.5 |
| Operating Temperature Range | -40℃~+120℃ | Adaptable to various extreme climatic conditions |
| Surface Treatment | Electrophoresis + Powder Coating Double Rust Prevention | Salt Spray Test ≥720 hours |
| Winding Direction | Right-hand Rotation | Meets Sinotruk Original Factory Assembly Standards |
| Perpendicularity | ≤2° | Ensures no tilting after installation and uniform stress distribution |
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Performance Characteristics
1. Material and Process Advantages: Made of 60Si2MnA spring steel, hot-rolled and subjected to high-temperature quenching and tempering, resulting in excellent impact resistance.
2. Precise Stiffness Matching: Rated stiffness of 125N/mm strictly conforms to the Sinotruk original rear suspension dynamics design, ensuring a balance between cab stability and handling.
3. Optimized Structural Design: The combination of effective coils and support coils ensures both elastic cushioning and support stability.
4. Corrosion Resistance and Durability: Double anti-rust treatment adapts to harsh working conditions such as high humidity, high salt, and dust, ensuring a long service life.
5. Original Equipment Manufacturer Compatibility: Perfectly matches Sinotruk original rear suspension shock absorbers (WG9925688100) and upper and lower brackets, with no assembly gaps, reducing abnormal noise.
