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Premium Curved Disc Springs High-Performance Elastic Solutions
Product Details
| Outside Diameter: | 3.00 Mm – 150.00 Mm | Inside Diameter: | 1.50 Mm – 120.00 Mm |
|---|---|---|---|
| Material Thickness: | 0.10 Mm – 6.00 Mm | Free Height: | 0.50 Mm – 25.00 Mm |
| Load Capacity: | From Fractions Of A Newton To Over 5,000 N | Force Deflection Range: | 10% To 80% Of Total Deflection |
| Temperature Resistance: | Up To 700°C (superalloys) | Material Types: | High-Carbon Spring Steels, Chrome-Vanadium Alloy Steels, Austenitic & Martensitic Stainless Steels, Precipitation-Hardening Stainless Steel, Superalloys |
| Corrosion Resistance: | Mid-to-high (stainless Steels) | Fatigue Resistance: | Optimized For Extended Cycle Life |
| Linear Force Profile: | Nearly Linear Spring Rate | Solid Height: | Ultra-low Profile |
| Dimensional Tolerance OD: | ± 0.05 Mm To ± 0.25 Mm | Dimensional Tolerance ID: | ± 0.03 Mm To ± 0.20 Mm |
| Dimensional Tolerance Height: | ± 0.10 Mm To ± 0.40 Mm | Load Tolerance: | ± 10% Of Theoretical Values |
| Pre-setting Process: | Rigorous Pre-setting To Prevent Relaxation | Surface Treatments: | Zinc Phosphating, Mechanical Galvanizing, PTFE Coatings, Dacromet |
| Thermal Stability: | Up To 315°C (17-7PH) | Creep Resistance: | High (superalloys) |
| Highlight |
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Product Description
Premium Curved Disc Springs: High-Performance Elastic Solutions
In modern precision engineering and mechanical assembly, managing micro-vibrations, compensating for axial end play, and maintaining stable, continuous tension within highly restricted spaces are critical to system reliability. Standard helical springs often fail to deliver the ideal balance of a compact solid height and a linear force deflection profile under light to medium loads.
As a premier innovator in specialized elastic components, Jiangsu Sunzo Spring Elasticity Technology Co., Ltd. (SUNZO) engineers advanced curved disc springs — also widely recognized across global industrial procurement channels as curved spring washers or crescent washers. By integrating state-of-the-art material sciences with precise geometric profiles, SUNZO delivers premium elastic solutions tailored to the rigorous demands of global OEMs, Tier-1 industrial suppliers, and heavy equipment manufacturers.
Engineered Product Advantages & Technical Selling Points
Jiangsu Sunzo's curved disc springs are geometrically characterized by a uniform, cylindrically curved cross-section. This unique design allows them to bridge the operational gap where standard Belleville washers or heavy-duty wave springs are overly rigid or lack sufficient deflection capabilities.
- Precise Linear Force Profiles: Unlike conventional conical washers, our curved disc springs exhibit a remarkably uniform and nearly linear spring rate throughout their functional range, particularly between 10% and 80% of their total available deflection. This predictable behavior ensures consistent pressure distribution without sudden load spikes.
- Exceptional Cycle Life and Fatigue Resistance: By optimizing internal microstructural stresses during specialized heat-treatment phases, Sunzo's components mitigate the risk of premature material fatigue. The dual-point contact profile expands smoothly under operational loads, minimizing friction and wear.
- Anti-Relaxation & Set-Removed Engineering: Every curved disc spring undergoes a rigorous pre-setting process to ensure it will not significantly relax or lose its free height over decades of deployment, securing long-term tension maintenance in critical joints.
- Compact Installation Envelope: With an ultra-low solid height profile, these springs deliver optimal axial force while utilizing only a fraction of the physical space required by traditional compression springs.
Comprehensive Material Matrix
Operating across varied environmental conditions requires specific metallurgical formulations. Jiangsu Sunzo offers a diverse portfolio of premium materials to ensure optimal performance in temperature tolerance, corrosion resistance, and high-tensile endurance.
- High-Carbon Spring Steels (e.g., SAE-C1074 / 65Mn): Industry standard for general-purpose mechanical assemblies requiring optimal elasticity and high yield strength.
- Chrome-Vanadium Alloy Steels (e.g., 51CrV4 / SAE 6150): Engineered for high-stress dynamic environments, providing outstanding toughness and superior fatigue strength.
- Austenitic & Martensitic Stainless Steels (e.g., SUS301, SUS302, SUS304, SUS316): Selected for mid-to-high corrosion resistance requirements, with SUS316 particularly favored in chemical processing environments.
- Precipitation-Hardening Stainless Steel (17-7PH / UNS S17700): Offers an elite combination of ultra-high strength, fatigue resistance, and excellent corrosion resistance at elevated temperatures up to 315°C (600°F).
- Superalloys (Inconel 718, Inconel X-750, Nimonic 90): Reserved for extreme, ultra-high-temperature environments (up to 700°C) and highly corrosive chemical mediums.
Standard and Custom Dimensional Specifications
To facilitate seamless integration into existing CAD designs and assembly lines, Jiangsu Sunzo maintains rigorous dimensional tolerances adhering to international manufacturing benchmarks.
| Parameter Specification | Standard Range Capability | Tolerance Criteria |
|---|---|---|
| Outside Diameter (OD) | 3.00 mm – 150.00 mm | ± 0.05 mm to ± 0.25 mm |
| Inside Diameter (ID) | 1.50 mm – 120.00 mm | ± 0.03 mm to ± 0.20 mm |
| Material Thickness (t) | 0.10 mm – 6.00 mm | Commercial Standard / Precision |
| Free Height (H0) | 0.50 mm – 25.00 mm | ± 0.10 mm to ± 0.40 mm |
| Load Capacity Range | From fractions of a Newton to over 5,000 N | Within ± 10% of theoretical calculated values |
Note: For specialized geometric configurations, our engineering center provides full blueprinting, non-linear Finite Element Analysis (FEA), and rapid physical prototyping with no rigid Minimum Order Quantity (MOQ) constraints.
Primary Industrial Application Scenarios
Thanks to their continuous tensioning properties and light-to-medium force characteristics, Sunzo's curved disc springs are deployed across a vast spectrum of high-end commercial industries:
- Industrial Valve & Fluid Automation: Installed within packing glands and actuator assemblies to automatically compensate for thermal expansion and contraction cycles, avoiding fluid leakage.
- High-Speed Machine Tools & Manufacturing Equipment: Integrated into precision spindle assemblies, bearing pre-loads, and rapid-change die modules to absorb micro-vibrations and minimize axial end play.
- Power Distribution & Electrical Utilities: Used within high-voltage switchgears and busbar connections to maintain constant, uniform contact pressure, preventing bolt creep and electrical arcing failures.
- Commercial Transportation & Heavy Machinery: Applied within automotive transmission assemblies, steering linkages, and braking systems as robust shock absorbers and tension elements.
The Sunzo Advantage: Why Partner With Us?
Corporate Structural Excellence: Jiangsu Sunzo Spring Elasticity Technology Co., Ltd. is a highly respected mixed-ownership enterprise proudly backed by equity participation from the China National Nuclear Corporation (CNNC) ecosystem.
R&D Hub in Nanjing & Advanced Smart Production in Sihong: Sunzo operates a dual-facility ecosystem optimized for speed and innovation, with dedicated Product Research & Development Center in Nanjing and state-of-the-art manufacturing base in Sihong Economic Development Zone.
World-Class Quality Frameworks: Our production processes are fully certified under global quality architectures, including IATF 16949, ISO 9001, ISO 14001, and ISO 45001.
Elite Testing and Surface Treatment Laboratory: Sunzo houses an independent, fully equipped inspection laboratory featuring advanced testing equipment and specialized surface treatments including Zinc Phosphating, Mechanical Galvanizing, PTFE anti-friction coatings, and high-tier Dacromet coatings.
Global Engineering & Procurement Support
Whether you require standard stock replacements or complex custom-engineered elastic systems, Jiangsu Sunzo provides end-to-end technical assistance. Our international engineering division communicates fluently across global technical standards (DIN, ASME, ISO, JIS), ensuring your specifications are accurately translated from initial CAD models to final physical components.
Partner with Jiangsu Sunzo to secure a reliable, vibration-resistant, and high-performance future for your mechanical assemblies. Contact our Nanjing R&D center or our Sihong manufacturing hub today for custom quotes, technical consultations, and free engineering samples.
Product Highlights
Sunzo's curved disc springs offer precise linear force, exceptional fatigue resistance & anti-relaxation properties. Compact design saves space while maintaining tension. Available in various materials with IATF 16949 certification. Custom solutions available.
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