Custom Spiral & Constant Force Spring Manufacturer
We design and manufacture high-performance spiral springs and constant force springs. Offering stable torque and smooth retraction, our solutions are ideal for medical devices, window regulators, and cable retractors.
Custom Engineered Spiral & Constant Force Springs for OEM Industries
As an IATF 16949 and ISO 13485 certified constant force spring manufacturer, we produce custom spiral power springs, clockwork springs, and constant force extension bands. We offer high-precision custom manufacturing from 0.07mm to 25mm dimensions, ensuring strict force tolerances within ±5%.
High-yield SUS301 stainless steel constant force springs for cable retraction reels, providing unvarying pulling force over 50,000 cycles to eliminate binding.
Pre-stressed alloy steel steering wheel clock springs and charging cable reel retractors engineered to withstand 150,000 full extension cycles across severe thermal shifts.
Bio-inert SUS316L micro constant force springs down to 0.05mm providing perfectly linear force within +/-3% tolerance for wearable drug pumps under cleanroom standards.
Dry-film lubricated spiral power springs for tool balancers and arm cable spools, achieving 200,000 high-load winding cycles without friction degradation.
Ultra-thin, high-tensile alloy springs for tethered drone power reels and parachute cord spools, maximizing extension length while preserving precious aircraft payload.
High-torque Dacromet-coated power springs for smart grid switchgear storage and solar tracker reels, resisting 720-hour salt spray exposure.
Heavy-gauge SK5 or 50CrVA clockwork power springs for industrial hose reels and crane balancers requiring immense mechanical energy storage.
SPIRAL SPRING HERSHEY CUSTOMIZATION
Custom Spiral & Constant Force Spring Manufacture: Smooth Linear Power
We manufacture premium constant force and spiral springs using deburred round-edge steel to prevent friction. Backed by specialized dry-film lubrication, our springs deliver smooth, consistent retraction force across over 100,000 cycles for extreme durability.
Customized to Your Needs
We provide full OEM customization for precision spiral springs and constant force extension bands,
tailoring every torque profile and mounting requirement to your exact engineering needs.
Raw Material Options
- Music Wire
- Stainless Steel - 302/304, 17-7
- Inconel Alloy
- Hastelloy
- Brass
- Titanium
- MP35N
- Elgiloy
- Monel
- Hard Drawing
- Hard Drawing Galvanized
- Oil Quenched
- Chromium Silicon
- Chromium Silicon Valve Grade
- Phosphor Bronze
- Beryllium Copper/Bronze
Additional Processes
- Grinding
- Presetting
- Load Testing
- Shot Peening
- Vibratory Polishing
- Heat Treatment
- Stress Relieving
Surface Treatment Options
- Electroplating: Zinc-Manganese
- Pre-galvanized Steel Wire
- Electropolishing for Stainless Steel
- Powder Coating: Available in Any Color
- Electrophoretic Coating (E-Coating)
- Hot-Dip Coating: Black Only
Project Case
We offer comprehensive custom spring solutions to meet your specialized requirements across diverse applications.
Spiral Spring
Spiral Spring
Spiral Spring
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Spiral Spring
Spiral Spring
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Spiral Spring
Have Questions?
Connect with our spring design team to discuss your project.
Industries We Serve
Your Customization Journey:
From Concept to Container
We make it simple for you to turn your design ideas into high-quality products. Our streamlined cooperation process ensures
clear communication, efficient production, and reliable delivery, so you can focus on growing your business.
Precision Coiling & Heat Treatment Process:
Incoming Inspection
Stamping
Forming
Grinding & Polishing
Hardening Treatment
Surface
Treatment
Final
Inspection
Packaging & Delivery
Housing Bracket & Assembly Process:
Incoming Inspection
Bending
Processing
Welding
Processing
Grinding
Surface
Treatment
Final
Inspection
Packaging & Delivery
Our Factory And Facilities
The company continuously introduces internationally advanced precision equipment, enabling customized manufacturing of high-precision springs with Our factory is equipped with advanced automated coiling centers and forming machinery, enabling high-precision custom manufacturing from 0.03mm to 25mm dimensions. We process premium spring steel strips and flat wires to deliver reliable spiral and constant force solutions for global OEMs., covering a full range of applications from ultra-precision to industrial heavy-duty requirements. Hershey currently operates over 100 advanced production machines, including fully automatic CNC spring machines, CNC leaf spring machines, and CNC rotary spring machines. Responding to customer demands for improved delivery efficiency, structural integration, and cost synergy, Hershey officially added precision hardware stamping and welding workshops in 2018, achieving a strategic upgrade from single-product spring manufacturing to multi-process collaborative, one-stop delivery services.
Certification
Partners
Frequently Asked Questions
We are a professional spring manufacturer with over 20 years of experience, located in Dongguan, China. We possess complete production lines, a heat treatment center, and an IATF16949 certified quality laboratory. You are welcome to visit our factory physically or via video call at any time.
We have extensive processing capabilities, covering a wire diameter range from 0.07mm to 25mm. We specialize in precision compression springs, extension springs, torsion springs, wire forms, as well as stamping parts and screws.
Absolutely. Our engineering team has over 30 years of experience. You can send us the sample, and we will reverse-engineer it using our imported Swiss precision instruments and generate CAD drawings for your approval. We can even assist in designing the spring based on your installation space.
Absolutely! We encourage sample requests to ensure our springs meet your exact requirements. If we have springs matching your specs in stock, we are happy to provide free samples (you may only need to cover shipping). For custom-designed springs,a nominal sampling/tooling fee applies, which is typicallyfully refundableonce mass production orders reach a certain volume.
We support flexible manufacturing. While large-volume production significantly reduces unit price, we also accept small trial orders (e.g., 100-500 pcs) to help you validate your market.
- Samples:As fast as3-5 daysfor standard springs.
- Mass Production:Typically10-15 days, depending on quantity and complexity.
Quality is our cornerstone. Our in-house quality control lab utilizes precision measuring instruments(like optical projectors, force testers, salt spray test chambers) to rigorously inspect critical dimensions, load characteristics, fatigue life, material composition, and surface finishes. We adhere to strict quality standards and can provide test reports upon request.
We implement “Closed-Loop Quality Control.” Production is monitored by in-line inspection systems. Before shipment, products undergo rigorous testing using Japanese imported CCD fully automated inspection machines, image dimension measurement systems, and torque/load testers. Material certificates (COA) and inspection reports are provided with every shipment.
We hold the IATF16949:2016 certification, the highest standard in the automotive industry, as well as ISO9001:2015 and ISO14001:2015. This ensures our products meet the stringent requirements of automotive, medical, and aerospace sectors.
For springs prone to tangling, we offer specialized packaging solutions such as Blister Trays, Tape & Reel, or Paper Tube packaging. This not only protects the product but also improves assembly efficiency on your automated production lines.
We support EXW, FOB, CIF, DDP, and more. With extensive export experience, we can ship goods directly to your designated port or warehouse.
Precision Springs
01
CNC Machined Parts
Automotive components demand high durability and consistent performance.
We manufacture springs and precision metal parts that meet the functional and reliability standards of automotive systems.
02
Compression Spring
We understand that compression springs play a critical role in load control and durability.
Our manufacturing capabilities acensure consistent performance, long fatigue life, and reliable quality across automotive, electronics, and industrial applications.
03
Extension Spring
We specialize in manufacturing extension springs with a wide range of end types and force requirements.
Each solution is engineered to support stable tension, repeatable performance, and long-term reliability.
04
Torsion Spring
Torsion springs require precise torque control and dimensional accuracy.
Our team develops custom torsion springs designed to meet demanding mechanical and automotive application requirements.
05
Wave Spring
Wave springs are designed to deliver reliable load performance in limited installation space.
We manufacture compact wave spring solutions that support space optimization without compromising stability.
06
Spiral Spring
We specialize in spiral spring manufacturing for controlled energy storage and release.
Our solutions are engineered for smooth output, consistent torque, and extended service life.
07
Spring Wire Form
Wire forms often serve both functional and structural purposes.
Our custom wire forming capabilities enable complex shapes tailored to specific assembly and performance needs.
08
Enameled Wire Inductor Coil
We provide custom metal stamping solutions supporting complex geometries and tight tolerances.
From tooling to mass production, our process ensures consistency, efficiency, and quality control.