Product Overview
The Steering Wheel Airbag Clock Spring (technically the SRS Spiral Cable or Rotary Connector) is the single most critical electrical component in the steering column. It is not merely a connector; it is the fail-safe transmission line that ensures the Driver Airbag (DAB) receives the firing signal within milliseconds of a collision.
At Jiaxing Richang Auto Parts, we treat every unit as a life-saving device. With a monthly production capacity of 2.8 million sets, we control the entire value chain-from FFC (Flexible Flat Cable) lamination to final assembly-ensuring full traceability for global OEMs.
Engineering & Manufacturing Advantages
1. Certified SRS Circuit Integrity (GP10 Lab)
Airbag deployment relies on precise resistance. Our in-house laboratory is certified to SGMW (SAIC GM Wuling) GP10 standards (since July 2016). We utilize Japanese Kikusui insulation testers to perform 100% resistance validation, ensuring the airbag squib circuit remains stable even under high-vibration conditions.
2. Extreme Durability Verification
A clock spring must endure the life of the vehicle. We validate our designs using 4 dedicated SRC Rotary Durability Testers alongside Three-Comprehensive Vibration Systems.
- Cycles: Tested for millions of lock-to-lock rotations.
- Environment: Subjected to High-Low Temperature Shock (-40°C to +85°C) and Composite Salt Spray to prevent corrosion-induced open circuits.
3. FFC Precision Technology
Unlike competitors who outsource cabling, we operate 9 FFC lamination lines and 11 automated punching/printing lines. This allows us to strictly control conductor pitch and insulation thickness, preventing "crosstalk" between the sensitive airbag signal and high-current horn/heating circuits.
4. Versatile OEM Configurations
Our engineering portfolio covers the full spectrum of automotive needs:
- U-Type Structures: Compact designs for passenger vehicles (e.g., Baojun 530, Chery Q22).
- Roller-Type Mechanisms: Heavy-duty designs for commercial trucks (e.g., Dongfeng Tianlong) requiring large rotation angles up to ±4.8 turns.
Application Sectors
Our Airbag Clock Springs are trusted by Tier-1 suppliers and OEMs across multiple verticals:
New Energy Vehicles (NEV)
Integrated into the advanced cockpits of BYD, Neta (Hozon), and Aion, supporting ADAS and regenerative braking controls.
Commercial & Heavy Duty
Ruggedized spiral cables for Volvo, Renault, Sany Heavy Industry, and Shaanxi Automobile.
Passenger & Light Commercial
High-volume supply for SAIC GM Wuling (Hongguang Mini), Geely, and JMC Ford Transit vans.
Technical FAQ
Q1: How do you prevent the "Service Airbag" warning light from triggering?
A1: The warning light is usually caused by micro-breaks in the ribbon cable. We mitigate this by using CCD Visual Inspection systems during the FFC punching process to verify conductor width. Furthermore, our GP10 lab conducts Instantaneous Interruption Testing to detect resistance spikes that standard testers miss.
Q2: Can your clock springs handle steering wheel heating?
A2: Yes. Standard airbag cables cannot handle high amperage. We manufacture specific SKUs (such as for the GAC Trumpchi M8) with dedicated high-copper tracks to power heating elements safely without thermal damage to the adjacent airbag lines.
Q3: What is the channel capacity for complex steering wheels?
A3: We offer configurations ranging from simple 2-channel (Airbag + Horn) to complex 26-channel hubs (e.g., for Dongfeng D600 series) to support Media, Cruise Control, Voice, and Paddle Shifters.
Q4: Is the installation process compatible with OEM assembly lines?
A4: Absolutely. Our products are engineered to OEM fitment standards. We supply direct to assembly lines for manufacturers like Foton and BAIC, ensuring our housings mate perfectly with the steering column casting and snap-locks.
Q5: What happens if an airbag clock spring is not centered during installation?
A5: If a clock spring is not centered (set to the neutral position), the internal ribbon will snap upon the first full turn of the steering wheel. All our units are shipped pre-centered with a locking pin to ensure safe installation by technicians.
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