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Fire Damper Constant Force Spring – Stainless Steel Manufacturer | SEME Hardware
Fire Damper Constant Force Spring
Stable & Reliable Spring Solution for Fire Protection Systems
Product Overview
Our Fire Damper Constant Force Spring is specifically designed for use in fire and smoke damper assemblies, providing consistent and controlled force output throughout the full operating stroke.
Unlike traditional torsion or compression springs, constant force springs ensure stable torque and reliable closing performance, which is critical for fire damper systems operating under emergency and high-temperature conditions.
Typical Application – Fire Damper Assembly
This image shows a constant force spring installed inside a fire damper housing, where the spring drives the damper blade to close automatically when triggered by a fusible link or actuator failure.
Key application functions:
Automatic damper blade closing
Stable force during full opening and closing
Reliable operation in fire protection systems
Constant force spring used in fire damper application
Product Features & Advantages
✔ Constant Output Force
Maintains consistent torque throughout the working range
Ensures smooth and predictable damper operation
✔ Compact & Space-Saving Design
Rolled strip spring structure fits easily inside damper frames
Ideal for compact fire damper assemblies
✔ High Durability
Designed for long service life with repeated cycles
Excellent fatigue resistance
✔ High-Temperature Compatibility
Suitable for fire damper systems exposed to elevated temperatures
Material selection available based on application requirements
Spring Structure & Custom Configurations
Our constant force springs are manufactured from precision-rolled metal strip, forming a compact cylindrical shape with controlled force output.
Available custom options include:
Inner / outer diameter
Strip thickness and width
Mounting hole or slot design
Stainless steel or carbon steel materials
Customized force curve and stroke length
Each spring can be engineered according to your fire damper design drawings or technical requirements.
Materials & Manufacturing
Stainless Steel (commonly used for fire damper applications)
Carbon Steel (upon request)
Precision stamping & forming
Controlled heat treatment process
100% dimensional inspection before delivery
Our production process ensures stable force performance and consistent quality across batches.
Quality Control & Reliability
Every fire damper constant force spring undergoes:
Dimensional inspection
Visual surface check
Force and stroke verification (as required)
Traceable production records
Compliance with RoHS / REACH requirements is available upon request.
Typical Applications
Fire dampers
Smoke dampers
HVAC fire protection systems
Automatic safety closing mechanisms
These springs are widely used in commercial buildings, industrial facilities, and HVAC fire safety systems.
Why Choose Us
10+ Years of Experience – Specialized in custom constant force springs for demanding applications
ISO Certified – Qualified with full ISO documentation and quality control systems
Fire Damper Expertise – Deep understanding of fire damper system requirements and standards
Flexible MOQ – Low minimum order quantity for samples and prototyping
Consistent Quality – Stable quality assurance for long-term, reliable supply
Full Technical Support – Work from drawings, samples, or specifications with engineering discussion
We don't just meet specifications on paper – we ensure your spring performs reliably in real-world fire damper applications.
Looking for a reliable Fire Damper Constant Force Spring ? Send us your specs – we'll reply within 24 hours.
Send us your drawing, sample, or application details
Get fast technical feedback and competitive pricing
📧 Email: [email protected]
📞 WhatsApp / WeChat: +86 186 6511 1545
Fast response | Custom solutions | Worldwide shipping
