Description
Technical Parameters
Rail E Clip Fastening System
The Railway E-Clip is a constant-force spring fastener with a distinctive epsilon-shaped geometry, used in concrete sleeper track systems. Made from heat-treated silicon-manganese steel, it stores elastic energy during installation to deliver sustained clamping force on the rail foot. The closed-loop design interlocks with cast-in shoulders, providing secure retention and reliable performance across mainline, high-speed, and freight railways .
Technical Specifications:
| Parameter | Specification | Performance Indicator |
|---|---|---|
| Spring Type | Epsilon-shaped constant force | Multi-zone flexure design |
| Material | 60Si2Mn spring steel | 1,300–1,500 MPa tensile strength |
| Clamping Force | 12–16 kN per clip | <10% relaxation over service life |
| Vertical Capacity | 20 mm elastic deflection | Accommodates track settlement |
| Corrosion Protection | Zinc-aluminum flake | 1,500 hours salt spray resistance |
| Certification | EN 13481-2 compliant | Category C for concrete sleepers |
Installation & Maintenance Perspective:
- The clip accepts a standard insulated lever for both installation and removal, requiring no hydraulic or pneumatic tools .
- A defined tool engagement pocket positively captures the lever, preventing slippage during high-force actuation .
- Audible and tactile feedback confirms proper seating when the clip arms fully engage the shoulder pockets .
- Visual reference marks on the clip body enable rapid post-installation inspection without measurement equipment .
Maintenance & Operational Perspective
- The epsilon geometry creates a non-linear spring rate that softens initial deflection while stiffening under extreme loads .
- Vertical rail movement up to 20 mm is accommodated without exceeding material elastic limits or losing clamping force .
- The clip absorbs high-frequency vibrations from wheel-rail interaction, reducing transmitted loads to the sleeper structure .
- Torsional stability is inherent to the symmetrical design, preventing rotation or migration within the shoulder housing .
Gnee Professional supplier
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