Description
Technical Parameters
Railway Nabla Clip - Technical Data Sheet
| Item | Description / Specification |
|---|---|
| Product Name | Nabla Clip (Δ-clip, "V" Clip) |
| Origin / Standard | French National Railways (SNCF) Origin, widely used in European High-Speed Rail |
| Type | Tension Clip |
| Primary Function | To provide a high and consistent clamping force to secure the rail in high-speed and heavy-load applications. |
| Distinctive Feature | V-shaped (nabla "∇" geometry) design, which is highly efficient in generating tension. |
| Material | High-quality spring steel, typically 60SC7 (French Standard) or 60Si2CrA per EN 10089. |
| Surface Treatment | Phosphating (Standard) or Electro-galvanizing for corrosion protection without hydrogen embrittlement risk. |
| Heat Treatment | Quenched and Tempered to achieve high strength and exceptional fatigue resistance. |
| Mechanical Properties | |
| - Tensile Strength | ≥ 1600 MPa |
| - Yield Strength | ≥ 1450 MPa |
| - Hardness | 44 - 50 HRC |
| Toe Load (Clamping Force) | High, typically in the range of 11 - 14 kN. |
| Fatigue Performance | Excellent, designed to withstand over 5 million load cycles, making it suitable for very high-speed traffic. |
| Application | Primarily used in High-Speed Rail (e.g., LGV lines in France, Shinkansen in Japan), and other ballastless track systems requiring high stability. |
| Installation | Requires a specialized hydraulic tool that grips the ends of the clip and stretches it vertically before placing it into the shoulders of the baseplate. |
| Key Features | • Very High and Stable Clamping Force • Excellent Anti-loosening Performance • Superior Fatigue Life • Optimal for High-Speed & Heavy Haul • Robust Design |
Comparison with Other High-Performance Clips
| Clip Type | Clamping Force | Installation Method | Typical Application |
|---|---|---|---|
| Nabla Clip | Very High (11-14 kN) | Stretching / Tensioning | High-Speed Rail, Heavy Haul |
| SKL 3 Clip | High (10-11 kN) | Leverage / Bending | High-Speed Ballastless Track |
| Fastclip (Pandrol) | Medium-High (9-11 kN) | Pressing / Compression | Universal (Mainline, Mass Transit) |
| W-clip | Low-Medium | Hammering / Bending | Light Rail, Industrial |
gnee-professional supplier
Hot Tags: rail fastening rails nabla clip, China rail fastening rails nabla clip manufacturers, suppliers, factory, rail clip non magnetic coating, rail clip roughness, railroad clips, rail clip cutting tools, rail clip conductive coating, rail clip stamping tools
