Precision Springs

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Compression Spring Torsion Spring Extension Spring
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Wave Spring Constant Force Spring Oil Seal Spring
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Metal Shafts Medical Shafts

Why Choose US?

Custom Solutions Tailored to your exact load, space, and environmental needs
ISO 9001 Certified Rigorous quality control at every stage
Rapid Prototyping Tested samples available in 5-7 days
Global Supply Chain Reliable delivery across North America, Europe & Asia

Contact US

E-mail: sales@lihongsprings.com
Mobile: +86 176 6501 0974
WhatsApp: +86 150 1844 0213
FAX: +86 0769-8532 4238
Add: Room 101, Building 1, No. 446 Yanglang Road, Dalingshan, Dongguan, Guangdong, China

Torsion Springs

A spring that exerts torque when twisted, storing and releasing rotational energy.

Key Advantages

Space Efficiency

Saves 40% space vs compression springs, ideal for compact applications like steering systems.

Precise Torque

±3% torque deviation, adjustable in 0.1-500N·m range for precision control..

Long Lifespan

Chrome-silicon alloy springs endure 200,000 cycles, exceeding industry standards.

Bidirectional Use

Unique helix design allows clockwise/counterclockwise rotation.

High-Temp Stability

Inconel718 maintains performance at 800°C.

How They Work

When torque is applied to the rotating end, coils tighten to store energy; releasing torque generates counter-rotational force.

Key Characteristics

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Materials - 316L stainless for medical use, 60Si2CrA alloy for heavy loads
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Torque Linearity - Premium products achieve R²>0.99 torque-angle curve
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Special Design - Double helix increases torque capacity by 35%

Key Design Factors

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Stress Analysis – FEA ensures max stress < 60% yield strength
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Fatigue Testing – 100,000 cycles at ±180° rotation required
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End Reinforcement – CNC-machined ends increase lifespan by 50%

Manufacturing Process

Material Prep

Select spring steel/stainless wire of specified diameter.

Coiling

CNC coiling machine forms helix with ±0.02mm precision.

Heat Treatment

380-450℃ tempering refines grain structure.

End Forming

Laser cutting/stamping creates specific end types.

Surface Treatment

Zinc plating/passivation/Teflon coating options.

Testing

100% inspection for torque, fatigue life and dimensions.

Packaging

VCI paper + vacuum packing prevents corrosion.

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