Suspension Spring Production Line Supplier
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Suspension Spring Production Line

The suspension spring production line is purpose-built for the complete manufacturing of helical coil springs used in automotive suspension systems, integrating induction heating, hot coiling, end-tip grinding, heat treatment, and hot-setting into a fully automated, seamlessly coordinated workflow that meets the demands of high-volume, high-consistency production.
The core heating unit employs medium-frequency induction technology to heat spring steel billets (e.g., 60Si2Mn) rapidly and uniformly to the required process temperature. With fast ramp-up speed and even temperature distribution, decarburization depth is reliably controlled to ≤0.1mm, ensuring the finished spring surface meets the stringent fatigue strength requirements of suspension applications.
The line incorporates two key processing modules — an end-tip grinding induction heating unit and a hot-coiling induction heating unit — handling tapered end forming and full-body coil winding respectively. The configuration flexibly accommodates a range of wire diameters, pitches, and free heights, with straightforward changeover between specifications.
Heat treatment and hot-setting operations follow in close sequence, achieving post-quench hardness of 47–51HRC with stable elastic performance and dimensional accuracy. Consistent spring rate characteristics across every batch ensure the stiffness and fatigue life requirements of the vehicle suspension system are reliably met.
The fully automated line delivers high throughput and stable operation with low thermal radiation and a clean production environment. Significant energy savings over conventional heating methods translate into a clear competitive advantage in overall production cost.









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About Us
Wuxi Weineng Automation Technology Co., Ltd.
Wuxi Weineng Automation Technology Co., Ltd. located in Wuxi, the Pearl of Taihu Lake, covers an area of ​​6,000 square meters and currently employs over 60 people. In 2016, the company's founding team began researching and developing complete sets of equipment for automotive leaf springs, hot-coiled springs, and stabilizer bars. Suspension Spring Production Line Supplier in China. To date, they have been deeply involved in this industry for 10 years and are recognized as a specialized, innovative, and distinctive enterprise in this field by the Ministry of Industry and Information Technology.
The company integrates R&D, production, sales, and service. Its main products include complete sets of automotive leaf spring equipment and stabilizer bar equipment, including stabilizer bar end induction heating equipment, stabilizer bar thermoforming induction heating equipment, hollow stabilizer bar double-end induction heating equipment, hollow bar resistance conduction heating production lines, stabilizer bar secondary vulcanization production lines, and hot-coiled spring equipment. The company also provides users with complete induction heating automated production lines. Suspension Spring Production Line Factory in China.
Over the years, the company has served leading domestic enterprises such as Shanghai China Spring Manufacturing Co., Ltd., Huawei Technology Co., Ltd., Zhejiang Meili Technology Co., Ltd., Zhejiang Jinsheng Auto Parts Co., Ltd., Chengdu ThyssenKrupp Fawer Spring Co., Ltd., Pinghu ThyssenKrupp (Pinghu) Automotive Stabilizer Bar Co., Ltd., and Liaoyang ThyssenKrupp Fawer Spring Co., Ltd., earning high praise for its products and services. Furthermore, the company has exported its equipment to countries such as Turkey, South Korea, India, Brazil, Egypt, Dubai, Iran, Africa, Tunisia and Morocco. "Professionalism, precision, innovation, and integrity" are the development concepts that the company has always adhered to. While continuously strengthening its own scientific research capabilities, it has formed stable industry-university-research cooperation with many universities. It has been repeatedly rated as a high-tech enterprise and a specialized and innovative enterprise. In the future, the company will continue to deepen its research and development in the automotive leaf spring, automotive guide arm, automotive stabilizer bar and spring industry equipment, provide the spring industry with more professional, intelligent and sophisticated equipment products, and contribute to the high-quality development of the global automotive leaf spring, automotive stabilizer bar and hot-coil spring industries.

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