Heavy Steel SKL Clips

Heavy Steel SKL Clips

Railway Clip is used to fasten the rails to the underlying base plate together with the concrete sleeper. A variety of different types of heavy-duty clips are used to fasten the rails to the underlying baseplate or Sleeper, one common being the E Clip, which is shaped like a stubby paperclip. Another one is the SKL Tension Clamp, which is also the most widely used type all over the world. Others like KPO Clamp and Nabla Clip, also used in different situations.
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Description
Technical Parameters

Rail skl Clip Fastening System

SKL Rail Clip | Glossary | Tension Clamp

The SKL clip is a non-threaded elastic rail fastener with a distinctive double-coil spring body. Made from high-grade spring steel, it generates constant toe load through elastic deflection. The clip works with an angled guide plate and a screw spike to hold the rail foot securely against concrete sleepers. It is a standard fastening system for modern high-speed and heavy-haul railways.

Technical Specifications:

Parameter Standard Requirement Typical Value
Clip type family SKL series SKL-12 / SKL-14 / SKL-21
Wire diameter Spring steel bar 13.0 mm ± 0.2 mm
Steel grade EN 10089 standard 60Si2CrA / 51CrV4
Surface protection Anti-corrosion coating Zinc plated / Oxide black
Installation deflection Working spring travel 11 mm ± 1 mm
Minimum toe load At specified deflection 10 kN per clip
Maximum toe load At specified deflection 14 kN per clip
Fatigue requirement Without fracture 5 million cycles
Elastic Rail Clamp

Installation & Maintenance Perspective:

  • Fits directly into cast shoulders without requiring special rail adapters
  • Works with most international rail profiles including UIC54 and UIC60
  • Requires specific guide plate angle matching the rail base slope
  • Compatible with both insulated and non-insulated fastening assemblies
  • Standard components fit across multiple sleeper types from different suppliers

 

Maintenance & Operational Perspective

  • Provides continuous clamping under extreme temperature changes from -40°C to +60°C
  • Absorbs both vertical wheel loads and lateral track forces simultaneously
  • Maintains electrical resistance when used with insulated guide plates
  • Resists permanent deformation even after repeated heavy axle passes
  • Does not loosen under vibration unlike bolted mechanical connections
Railroad Railway Steel Rails SKL Clips
Gnee Professional supplier

 

 

 

 

 

 

Rail Shoulder Fastening System Rail Shoulder Fastening SystemRail Shoulder Fastening System

 

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