Description
Technical Parameters
Railway Nabla Spring Clip - Technical Specification
| Category | Parameter | Description / Specification |
|---|---|---|
| Primary Function | To provide clamping force in rail fastening systems for concrete sleepers. | |
| Key Application | Chinese High-Speed Rail (CRH lines), Heavy-Haul Railways, and other high-performance tracks. | |
| Physical & Mechanical Properties | Material | 60Si2MnA or 55SiCr High-Carbon Spring Steel. |
| Hardness | 41-46 HRC (Rockwell C Scale). | |
| Tensile Strength | ≥ 1570 MPa. | |
| Clamping Force | ~11 - 14 kN (e.g., ~12.5 kN for RN-18 type). | |
| Fatigue Life | ≥ 5 million cycles (tested per TB/T 3395 / EN 13146). | |
| Installation & Tooling | Installation Tool | Hydraulic Tensioning Tool / Automatic Clip Layer. |
| Installation Force | Requires high force (e.g., ~30 kN) to compress and insert into the shoulder. | |
| Compatibility | Sleeper Type | Pre-stressed concrete sleepers (e.g., Type III, Type IIIa) with embedded shoulders. |
| Rail Sections | Primarily CHN 60 rail (60 kg/m). |
Key Advantages of Nabla Clips:
- High Clamping Force and Stability: Its geometric design generates a very high and stable clamping force, which is essential for maintaining track geometry at extremely high speeds (350+ km/h).
- Excellent Fatigue Resistance: Manufactured from premium spring steel and through a rigorous heat-treatment process, it can withstand hundreds of millions of load cycles without failure.
- Proven Reliability: It is the backbone of the largest High-Speed Rail network in the world (China's HSR), demonstrating its exceptional performance and reliability in the most demanding service conditions.
- Robust Design: The nabla (∇) shape provides a robust and secure fit into the shoulder of the sleeper, minimizing the risk of dislodgement.
gnee-professional supplier
Hot Tags: nabla clip for rails, China nabla clip for rails manufacturers, suppliers, factory, rail clip alignment, rail clip adjustment, rail clip metallic coating, rail clip anti corrosion coating, rail clip bending tools, rail clip spacing
