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Why Leading Wind Turbine Manufacturers Rely on Belleville Disc Springs for Safety-Critical Assemblies

Aug. 28, 2025

Wind turbine assemblies operate under extreme load conditions and must ensure absolute reliability. Leading manufacturers worldwide rely on Belleville Disc Springs to maintain safe and consistent performance in critical components such as pitch control systems, braking systems, and generator assemblies.

At HEGONG SPRING®, we specialize in delivering precision-engineered Belleville Disc Springs that meet the stringent demands of the energy sector. Our springs are designed to handle high loads, long cycles, and harsh environmental conditions, ensuring turbines operate safely and efficiently.


Safety-Critical Applications in Wind Turbines

Pitch Control Systems

  • Belleville disc springs provide consistent preload and damping in blade pitch mechanisms.

  • Maintain precise blade angles for optimal energy capture and turbine safety.

Braking Systems

  • High-load disc spring stacks ensure reliable braking under emergency conditions.

  • Pre-assembled stacks reduce installation errors and improve system reliability.

Generator and Gearbox Assemblies

  • Disc springs absorb shocks and vibrations, extending the lifespan of critical drivetrain components.

  • Resistant to temperature variations and fatigue over prolonged service periods.


Why Belleville Disc Springs Are the Preferred Choice

  1. High Load Capacity in Compact Space
    Belleville springs provide high force without requiring large installation space, a key advantage in turbine hubs and assemblies.

  2. Durability in Harsh Conditions
    Our springs resist corrosion, temperature extremes, and fatigue, making them ideal for offshore and onshore wind applications.

  3. Custom Engineering Solutions
    HEGONG SPRING® offers customized disc springs and pre-assembled stacks to meet unique design requirements.

  4. Standard Compliance and Quality Assurance

    • ISO 9001:2015, ISO 14001:2015, ISO 45001:2018 certified.

    • Participation in drafting national standards (GB/T, JB/T) ensures top-tier engineering quality.

  5. Proven Track Record

    • Over 30 years of R&D and manufacturing experience.

    • Successful projects include ultra-cryogenic disc springs for Shenzhou spacecraft and large-scale civil engineering projects like the Three Gorges Hydropower.


HEGONG SPRING® Advantages for Wind Turbine Manufacturers

  • Extensive Expertise: Experienced team specializing in standard and custom disc springs, wave springs, and other elastic elements.

  • Precision Manufacturing: High-quality materials, corrosion-resistant coatings, and high-temperature/cold-resistant designs.

  • Global Supply: Exported to Japan, Germany, USA, Canada, Turkey, Singapore, and more.

  • Flexible Production: Small batch orders available with competitive pricing and prompt delivery.

  • Engineering Support: CAD drawings, calculation guidance, and technical consulting for optimal spring selection.


Case Studies & Proven Performance

Wind Turbine Blade Systems

Leading wind turbine manufacturers faced challenges with blade pitch mechanism reliability under extreme load and harsh weather conditions. HEGONG SPRING® provided customized Belleville disc spring stacks, precisely calculated for the required preload and damping.

Results:

  • Reduced pitch system maintenance frequency by 20% over 3 years.

  • Improved turbine operational stability under gusty wind conditions.

  • Optimized installation time with pre-assembled stacks, reducing assembly errors.

Offshore Wind Farms

Offshore turbines operate in corrosive, high-humidity environments, causing frequent spring corrosion and performance degradation. HEGONG SPRING® supplied corrosion-resistant, pre-assembled Belleville stacks with anti-corrosion coatings suitable for long-term exposure.

Results:

  • Extended spring lifespan by 30%, reducing unplanned downtime.

  • Enhanced safety-critical braking and pitch control system reliability.

  • Simplified maintenance due to pre-assembled stack design.

Generator and Gearbox Assemblies

Wind turbine generators and gearboxes often experience shock loads and vibration, which can shorten the service life of critical components. HEGONG SPRING® designed disc spring stacks tailored to absorb shocks and compensate for thermal expansion, ensuring stable operation.

Results:

  • Minimized vibration-induced wear, extending gearbox service intervals by 25%.

  • Reduced the likelihood of emergency shutdowns, enhancing energy output reliability.

  • Delivered customized solutions quickly to match production schedules.

Large-Scale Project References

  • Shenzhou Spacecraft Ultra-Cryogenic Disc Springs: Demonstrated capability for high-precision, high-reliability spring stacks.

  • Three Gorges Hydropower Project: Supplied high-load disc spring stacks for critical valve assemblies.

  • Shanghai Yangtze River Tunnel Bridge & Shanghai Oriental Art Center: Provided large-volume, precision-manufactured disc springs for heavy-duty civil engineering applications.

Key Takeaways:

  • HEGONG SPRING® solutions consistently solve load, fatigue, and environmental challenges in safety-critical applications.

  • Pre-assembled and customized stacks reduce installation errors and maintenance downtime, directly impacting operational efficiency.

  • Proven track record across wind energy, aerospace, and civil engineering projects, ensuring confidence in every purchase.


Request a Custom Solution

Ensure your wind turbine assemblies operate safely and efficiently with HEGONG SPRING® Belleville Disc Springs.

  • Get a Quote: Tailored design for your specific load and assembly requirements.

  • Technical Support: Our engineers provide expert guidance to optimize performance.

  • Pre-Assembled Stacks: Reduce assembly errors and save installation time.

Contact us today to receive a competitive quotation and engineering consultation.

Why Leading Wind Turbine Manufacturers Rely on Belleville Disc Springs for Safety-Critical Assemblies


FAQ – Disc Spring Stacks

Q1: What is the difference between parallel and series disc spring stacks?
Parallel stacks increase load, while series stacks increase deflection.

Q2: Can you supply pre-assembled disc spring stacks?
Yes, we provide pre-stacked assemblies with lubrication and protective packaging.

Q3: How are disc spring stacks calculated?
By multiplying the load (parallel) or deflection (series) of a single disc spring, following DIN 2092 guidelines.

Q4: What industries use disc spring stacks most commonly?
They are widely used in clutches, brakes, valves, pumps, and energy equipment.


Downloadable Resources

Download our Disc Spring Stack Design Guide (PDF) to learn more about calculation methods, stacking arrangements, and best practices.