Jiangsu Sunzo Spring Elasticity Technology Co., Ltd
| Packaging Details | Carton |
| Delivery Time | Negotiable |
| Payment Terms | Negotiable |
| Material | Chrome-silicon alloy (ASTM A401) |
| Hardness | 45-50 HRC |
| Fatigue life | 1.2 million cycles |
| Cycle durability | 200,000+ engagement cycles |
| Wire diameter control | ±0.01mm |
| Operating temperature | -40°C to 120°C |
| Load-deflection tolerance | ±2% |
| NVH reduction | 18% |
| Unsprung mass reduction | 28% |
| Coil pitch accuracy | 120 data points per second |
| Dynamic load testing | 10Hz for 10⁶ cycles |
| Salt spray exposure | 500 hours |
| Impact testing | 300G |
| Yield strength | 70% |
| Durability standard | ISO 19403 |
| Quality standard | IATF 16949 |
| Spring rate stability | Maintained across temperature range |
| Redundant safety | 70% functionality after failure |
| Place of Origin | Sihong, China |
| Brand Name | Sunzo |
| Certification | CE/IATF16949/45001/14001/9001 |
View Detail Information
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Product Specification
| Packaging Details | Carton | Delivery Time | Negotiable |
| Payment Terms | Negotiable | Material | Chrome-silicon alloy (ASTM A401) |
| Hardness | 45-50 HRC | Fatigue life | 1.2 million cycles |
| Cycle durability | 200,000+ engagement cycles | Wire diameter control | ±0.01mm |
| Operating temperature | -40°C to 120°C | Load-deflection tolerance | ±2% |
| NVH reduction | 18% | Unsprung mass reduction | 28% |
| Coil pitch accuracy | 120 data points per second | Dynamic load testing | 10Hz for 10⁶ cycles |
| Salt spray exposure | 500 hours | Impact testing | 300G |
| Yield strength | 70% | Durability standard | ISO 19403 |
| Quality standard | IATF 16949 | Spring rate stability | Maintained across temperature range |
| Redundant safety | 70% functionality after failure | Place of Origin | Sihong, China |
| Brand Name | Sunzo | Certification | CE/IATF16949/45001/14001/9001 |
| High Light | Automotive helical torsion spring ，45 HRC helical torsion spring ，50 HRC compression spring 20mm | ||
In the automotive industry, compression springs serve as safety-critical components where performance variability directly impacts vehicle dynamics, passenger comfort, and crashworthiness. Our Automotive-Grade Helical Compression Springs are engineered to meet the stringent demands of modern vehicle architectures, delivering consistent elastic support across suspension systems, clutch assemblies, and brake mechanisms.
Leveraging advanced CAD (SolidWorks 2024) and FEA (ANSYS Mechanical) simulations, our engineering team optimizes spring geometry to achieve precise load-deflection characteristics—typically maintaining ±2% tolerance on force output across the full compression range. This precision directly reduces NVH (Noise, Vibration, Harshness) levels by up to 18% compared to conventional springs.
Manufacturing precision is maintained through 5-axis CNC coiling machines (Torsion Tech TT-5000) with ±0.01mm wire diameter control and automated laser inspection systems that verify coil pitch accuracy at 120 data points per second. Heat treatment is performed in nitrogen-atmosphere furnaces with computer-controlled ramp rates, achieving uniform grain structure and eliminating residual stresses—critical for maintaining spring rate stability across -40°C to 120°C operating temperatures.
| Test Type | Specifications | Standards |
|---|---|---|
| Dynamic Load Testing | 10Hz for 10⁶ cycles | Automotive Durability |
| Corrosion Resistance | 500 hours salt spray exposure | ASTM B117 |
| Impact Testing | 300G simulation | Crash Scenario Validation |
Our ISO/TS 16949 certified quality management system ensures full traceability from raw material lot (with 3.1 material certificates) to finished product, compliant with IATF 16949 automotive quality standards.
For semi-active suspension systems, dynamically adjusts stiffness based on road conditions using variable pitch design.
For autonomous vehicles, featuring dual-load paths that maintain 70% functionality even after partial fatigue failure.
Backed by a dedicated automotive R&D team with 25+ years of OEM collaboration experience, we provide application-specific solutions—from high-performance sports cars to heavy-duty commercial vehicles—delivering the precision and reliability that modern automotive engineering demands.
Company Details
Business Type:
Manufacturer,Exporter,Seller
Year Established:
2006
Total Annual:
1.2M-1.4M
Employee Number:
160~200
Ecer Certification：
Verified Supplier
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