Rail Fastening Clips: Technical Specification
| Parameter | Specification |
|---|---|
| Product Designation | Fastening Clip (e.g., FAST Clip, E-Clip, SKL Clip) |
| Primary Function | Secures rail to sleeper/baseplate maintaining gauge and track geometry |
| Material | High-carbon spring steel (e.g., 60Si2MnA, 60CrMoA) |
| Surface Treatment | Zinc plating (electro/galvanized), epoxy coating, or Geomet® |
| Hardness | 42-50 HRC (varies by type and standard) |
| Clamping Force | 8-16 kN (dependent on clip design and application) |
| Fatigue Life | >2-3 million cycles (at design load) |
| Applicable Standards | EN 13481, TLV, AREMA, GB/T, or client-specific |
Application & Installation Summary
| Characteristic | Details |
|---|---|
| Sleeper Compatibility | Concrete sleepers (primarily), steel sleepers, timber sleepers with baseplate |
| Installation Method | Manual tool, hydraulic press, or automated clip applicator machine |
| Key Features | - Maintains constant toe load - Vibration and shock absorption - Electrical insulation (with insulator) |
| Common Types | FAST Clip, Pandrol PR, SKL, Nabla, Fist, E-Clip |
| Key Advantage | Rapid installation, high retention, and design-life reliability |
| Maintenance | Visual inspection during routine track checks for cracks, deformation, or corrosion |

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