Can you manufacture to our exact load, rate, and tolerance targets?

Yes. We build to print with tight control over load/deflection, rate, free length, and dimensional tolerances to meet OEM specifications.

What coil spring materials and finishes are available?

We support high-carbon, alloy, and stainless steels with finishes such as phosphate, e-coat, or other protective coatings based on environment and durability needs.

Do you offer shot peening and end grinding?

Yes. Shot peening and stress relief can be applied to improve fatigue performance, and end grinding is available where flat seating is required.

Do you support APQP/PPAP documentation?

Yes. We provide APQP deliverables and PPAP submissions at the level required by your quality system.

What information should we provide for a quote?

Please include drawings or key specs: material, wire diameter, coil count, free length, load/deflection targets, end type, finish/environment, tolerances, expected volumes, and PPAP level.

Precision Coil Spring

CHUHATSU N.A. Precision Coil Springs – High-Performance Springs for Critical Automotive Functions

CHUHATSU N.A. Precision Coil Springs are designed to meet the high demands of modern vehicles. They offer versatility and reliability in various applications, including valve springs, heat-resistant springs, and power back door springs. These coil springs are engineered with advanced materials and manufacturing techniques to ensure optimal performance even in harsh conditions.

High-Strength Materials

Built using premium materials for enhanced durability and performance in critical automotive systems.

Heat Resistance

Withstands extreme temperatures over 600°C, making them ideal for high-heat applications.

Special Heat Treatment

Advanced processes like gas nitriding and other specialized treatments increase strength and fatigue resistance.

Multi-Stage Shot Peening

Enhances surface strength and durability, ensuring long-lasting performance under heavy use.

CHUHATSU Precision Coil Spring Benefits

Weight and Cost Reduction

Optimized design and material selection minimize weight and manufacturing costs without compromising strength or performance.

Versatility

The combination of heat treatment, shot peening, and anti-corrosion coatings ensures long-lasting resistance to fatigue and harsh environmental conditions.

Suitable for various automotive functions, from valve control to power door operation, providing reliable solutions across multiple systems.

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