Challenging Limits: Engineering for Ultimate Performance and Safety
- High-Fatigue Alloy Selection
- Complex Geometry Forming
- Ensuring Sports-Grade Durability
Industry Overview
The sports equipment industry places extreme demands on springs, which must withstand high-frequency, high-intensity impacts and extreme deformation far beyond standard industrial use. Commercial gym equipment requires ultra-long lifespan for safety, while outdoor gear like bicycles and golf clubs demand lightweight construction and precise stiffness to maximize athletic performance.
Automotive Application Coverage
- Commercial Gym Equipment：Springs for weight stack pins, treadmill shock absorption, and rowing machine return mechanisms.
- Cycling & Powersports：Front fork springs, rear shock absorber springs, and brake return springs.
- Outdoor & Extreme Sports：Springs for ski bindings, climbing carabiners, and trampoline extension springs.
- Water Sports：Corrosion-resistant springs for diving regulator valves and speargun triggers.
Sports Equipment Solutions & Customization Capabilities
Hershey Spring specializes in sports equipment manufacturing. We utilize high-fatigue alloys such as Chrome Silicon and Oil-Tempered Spring Steel. Through precision heat treatment, we ensure the original elasticity is maintained even after millions of cycles. Whether it's the complex torsion forming for ski bindings or the stable linear output for high-end shock absorbers, we provide custom solutions that meet stringent safety standards, making every sporting activity more reliable.
Industry-Grade Materials
- High-Fatigue Alloy Steel
Selected Chrome Silicon (CrSi) and Oil Tempered Wire, the preferred choice for gym weights and bicycle suspension, capable of withstanding extremely high-frequency impacts without fatigue.
Chrome Silicon (CrSi) & Oil Tempered Wire: Gold standard for high-impact fitness and bike applications, delivering long-lasting durability under repeated stress.
- Lightweight Titanium
Springs made from Ti-6Al-4V for premium competitive equipment such as racing and golf gear. 40% lighter than steel, corrosion-resistant, and fully non-magnetic.
Titanium: Offers ultra-lightweight, non-magnetic, and corrosion-resistant performance for high-end sports applications.
- Corrosion-Resistant Stainless Steel
Uses 304/316 stainless steel, ideal for diving, marine, and outdoor climbing equipment, resistant to sweat and salt spray.
304/316 Stainless Steel: Perfect for harsh environments, ensuring long-term reliability in wet or salty conditions.
Mechanical/Functional Customization Options
- Variable / Progressive Rate
For mountain bike and off-road motorcycle suspension, springs are designed with uneven pitch spacing—soft initial travel absorbs small bumps, while stiffer compression prevents bottoming out on hard impacts.
Variable Pitch Design for Suspension: Soft initial damping, progressive stiffening for high-impact support.
- Constant Force
Linear extension springs customized for resistance training equipment, providing smooth, uniform resistance throughout the full range of motion.
Linear Extension Springs: Ensure consistent, seamless resistance for safe and effective workouts.
- Special End Configurations
Springs equipped with 360° swivel hooks to prevent torque build-up or tangling during stretching, improving equipment flexibility and user experience.
Swivel Hooks: Enable full rotation, maintaining spring alignment and operational smoothness.
Industry-Focused Processes
- Precision Heat Treatment
Strict control of tempering temperature and duration ensures optimal spring toughness, preventing brittle fracture during extreme sports use.
Strict Tempering Control: Guarantees maximum resilience and reliability under high-impact conditions.
- Aesthetic Surface Finishing
Offers vibrant powder coating (e.g., red, black, yellow) and E-coating, combining visual appeal with corrosion resistance.
Powder & E-Coating：Enhances product aesthetics while providing long-lasting rust protection.
Durability & Reliability Enhancements
- Shot Peening
High-speed shot impacts introduce residual compressive stress on the spring surface, increasing fatigue life by 5–10×. This is standard for high-end suspension springs.
- Pre-Setting / Scragging
Springs are compressed to solid height before shipment to eliminate initial deformation, ensuring no height loss even after 3–5 years of continuous use.
Quality & Compliance
- Safety Certification
The factory is IATF 16949 and ISO 9001 certified. Sports springs are manufactured to the same rigorous standards applied to automotive safety components.
- Environmental Compliance
All materials and surface treatments comply with RoHS and REACH, ensuring non-toxic, safe use for prolonged skin contact.
Quality Assurance & Certifications
FAQ
For high-frequency dynamic applications, we recommend Chrome Silicon or Oil Tempered Wire. We also perform Shot Peening, which extends fatigue life by 5-10 times. Before shipment, we conduct Pre-setting (Scragging) to eliminate initial set, ensuring the spring retains its force even after years of use.
Absolutely. This is our strength in the MTB and off-road sectors. We can design Variable Pitch springs to achieve “soft initial travel for comfort and stiff support at the end” to prevent bottoming out during heavy impacts.
We offer various weather-resistant solutions. For general outdoor use, we recommend Black E-coating or Dacromet, which can withstand 500+ hours of salt spray testing. For diving or marine gear, we suggest 316 Stainless Steel for superior resistance to seawater corrosion.
Yes. We offer high-quality Powder Coating services. Simply provide the RAL color code, and we will apply a vibrant, durable finish that not only looks great but also adds an extra layer of rust protection.
Our wire diameter capacity goes up to 30mm. This means we can easily manufacture heavy-duty compression springs for weight stack shock absorption and large multi-gym stations entirely in-house, ensuring full quality control.
No problem. Our engineers have extensive experience in sports mechanics. Share your expected Stroke, Installation Space, and Force Curve requirements, and we will calculate the optimal wire diameter and coil count, providing samples for road testing.