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Flat Spiral Springs | Custom Power Clock Spring Manufacturer
Flat Spiral Springs for Return & Tension Control
Custom flat spiral springs (power springs) for printer covers, lock handles, car seats, and oven doors. OEM / ODM ready.
What Is a Flat Spiral Spring？
A flat spiral spring (also called power spring or clock spring) is a flat steel strip wound into a spiral. It stores and releases rotational energy efficiently.
Key advantages over wire springs：
Constant torque over large angles
Fits into thin, compact spaces
Longer fatigue life
Four Typical Applications
Below are four common use cases where flat spiral springs outperform ordinary tension or torsion springs.
Technical Specifications（Customizable） | Parameters |
Material | SS301 / SS304 / SS316 / Carbon steel/60SI2MN |
Thickness | 0.10 – 2.00 mm |
Width | 2 – 50 mm |
Outer diameter | 8 – 200 mm |
Torque range | 0.01 – 20 Nm |
Life cycles | 5,000 – 100,000+ |
End types | Shaft slot / inner hook / outer hook / custom |
Our Manufacturing & Testing Capabilities
We don't just design flat spiral springs, we produce and validate them in-house.
Frequently Asked Questions（FAQ）
Q1：What is the difference between a flat spiral spring and a normal tension spring？
A：A tension spring provides linear pull using round wire. A flat spiral spring provides rotational torque using a flat strip. For applications like lock handle return or seat backrest, flat spiral springs are the correct choice.
Q2：Can one flat spiral spring design work for all four applications you listed？
A：Yes in principle, but not exactly the same product. The material thickness, outer diameter, torque, and end hooks are customized per application. We design separately for printer, lock, seat, and oven.
Q3：How do I choose torque for my application？
A：Based on：
Required return force
Working angle（e.g., 0–90° for car seat）
Available installation space
We can calculate and recommend a torque curve for you.
Q4：Will the oven door spring weaken under high temperature？
A：
No. We use SS301 or SS316 with high-temp treatment. At 200°C, torque retention exceeds 90% after 1,000 hours.
Q5：Can you make a very thin flat spiral spring for a compact lock handle？
A：Yes. Width can be as low as 2–3 mm. Outer diameter can be under 10 mm.
Q6：What is the lifespan of your car seat return spring？
A：Standard：50,000+ cycles
Automotive grade：100,000+ cycles with <15% torque loss.
Q7：Do you offer prototyping and custom torque curves？
A：Yes. Prototypes in 7–10 days. Torque curve can be linear or progressive based on your angle-torque requirement.
Q8：What is your MOQ？
A：Prototype：No MOQ
Production：500–1,000 pcs（depends on size）
Get a Quote – Tell Us Your Application
Please provide：
Application（printer / lock / car seat / oven / others）
Space dimensions（OD / ID / width / thickness）
Target torque or force
Estimated quantity
👉 Contact us today to get your tailored solution.
Dongguan Seme Precision Hardware Co., Ltd.
Tell us your requirements – no obligation, just a fast response.
📧 Email: [email protected]
📞 Phone / WhatsApp / WeChat: +86 186 6511 1545
Send your specs – we reply within 12 hours.
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