Custom Vibration Isolation Springs
Wire Dia. 5–80mm · Load up to 50 Tons · Supplied to Beijing Daxing Airport & Nuclear Plants
Why Engineers Choose Xulong for Vibration Isolation Springs
⚙️ Heavy-Duty Wire Diameter
Wire diameter up to 80mm, outer diameter up to 300mm. Most competitors stop at 30–40mm. For heavy industrial and seismic isolation applications, Xulong is one of the very few factories in China capable of consistent large-wire production.
🏛️ Proven in Landmark Projects
Xulong springs are used in seismic isolation systems deployed at Beijing Daxing International Airport and nuclear power facilities across China, through our partner Zhen’an Technology — a leading seismic isolation system integrator.
✅ IATF 16949 Quality System
Our quality management system is certified to IATF 16949 (automotive-grade) and ISO 9001. Every batch undergoes load testing and dimensional inspection before shipment.
Our Vibration Isolation Springs
Technical Specifications
| Wire Diameter | 5mm – 80mm |
| Outer Diameter | Up to 300mm |
| Free Length | Custom (up to 2000mm) |
| Material | 60Si2Mn / 50CrV4 / SUP9 / 304 SS / 316 SS |
| Natural Frequency | 1–8 Hz (custom-tuned) |
| Max Load Capacity | Up to ~50 tons per spring (custom) |
| Surface Treatment | Powder coating / Hot-dip galvanized / Phosphate |
| End Type | Closed & ground / Open / Pigtail / Custom flanged |
| Certifications | IATF 16949 · ISO 9001 |
| Lead Time | 3–6 weeks (standard), 2 weeks (expedite) |
Manufacturing & Delivery
Packaging & Export
Real-World Application Scenes
Vibration isolation springs are the core elastic element in a wide range of industrial and structural applications.
Application Industries
🏗️ Building & Civil Engineering
Base isolation systems for high-rise buildings, bridges, and critical infrastructure. Our springs provide the elastic restoring force in spring isolator mounts, tuned to the target natural frequency of the structure.
⚡ Generator & Compressor Mounting
Diesel generators, air compressors, pumps, and HVAC equipment often require spring isolators to prevent vibration transmission. Xulong supplies OEM springs for these isolator products.
🔬 Precision Equipment & Laboratories
Optical equipment, semiconductor tools, and metrology instruments require ultra-low vibration environments. Custom low-frequency springs (1–3 Hz) isolate sensitive systems from floor vibration.
🚢 Marine & Offshore
Corrosion-resistant 316 SS vibration isolation springs for ship engine mounts, offshore platform equipment, and subsea installations in saltwater environments.
Project Reference
Beijing Daxing International Airport & Nuclear Power Plants (China)
— Xulong Spring Factory, Foshan Nanhai, China (Est. 1979)
Xulong vibration isolation springs are integrated into seismic isolation bearing assemblies supplied by Zhen’an Technology — one of China’s leading seismic protection system manufacturers. These springs form the elastic core of the isolation system, providing controlled stiffness and long-term fatigue resistance in safety-critical structures.
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