Rail SKL Clips
| Specification Category | Details |
|---|---|
| Product Name | Rail SKL Clips (Full name: Schnellspannklemme; German for "quick-clamping clip" – a classic elastic rail clip widely used in European and global railway systems) |
| Core Function | - Secure rails to concrete sleepers (via matching base plates) by applying continuous clamping force - Resist rail displacement (lateral, vertical, and longitudinal) caused by train loads, thermal expansion, and vibration - Maintain precise track gauge (critical for train stability, especially in high-speed and heavy-haul lines) |
| Common Types by Model | - SKL 12 Clip: Standard model for mainline railways (clamping force: 12–15 kN); compatible with 49E1–60E1 rails (43–60 kg/m) - SKL 14 Clip: Heavy-duty variant (clamping force: 14–18 kN); for heavy-haul lines (axle loads ≥30 t) and 60E1–75E1 rails (60–75 kg/m) - SKL 10 Clip: Lightweight model (clamping force: 8–12 kN); for urban transit (metros, light rail) and 30E1–49E1 rails (22–43 kg/m) - SKL 15 Clip: High-performance type (clamping force: 15–20 kN); for high-speed railways (≥250 km/h) – optimized for vibration resistance |
Key Terminology Explained:
Spring Clip / Rail Clip: The core component of a fastening system that uses its elastic force to clamp the rail to the sleeper.
SKL: The leading brand name for this type of fastening system, from the German company Schraubenwerk Kläger.
Clamping Force (kN): The most critical parameter. It defines the force the clip exerts to hold the rail down, ensuring stability and safety.
Tensioning Tongs: A special tool used to compress and install the clip onto the shoulder of the sleeper.
UIC / EN Standards: International technical standards that ensure the product's quality, performance, and interoperability across railway networks.
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