Definition & Function
Railway elastic clips are the core elastic components of rail fastening systems, designed to:
- Maintain track gauge (±1mm tolerance)
- Dampen wheel-rail vibrations (15-25dB attenuation)
- Accommodate thermal expansion (±5mm displacement allowance)

Major Types & Standards
| Type | China Standard | Key Features | Application |
|---|---|---|---|
| SKL Clip | TB/T 3065 | Twin-leg symmetric, ≥5M cycles fatigue life | HSR (350km/h) |
| Pandrol e-Clip | Q/CR 563 | Single-leg asymmetric, maintenance-free | Metro/Conventional rail |
| Nabla Clip | GB/T 2078 | Geometric locking, high lateral resistance | Tight curves (R≤300m) |
| W-type Clip | TB/T 3395 | Triple-support, 30% cost-saving | Freight lines |
| FC Damped Clip | Q/CR 749 | Rubber composite layer (≥15dB damping) | Urban vibration zones |

Application of Rail Clips


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