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The Vossloh SKL 15 rail clip—also internationally designated as the SKL 15 tension clamp or elastic W-clip—is a premium high-performance component specifically engineered for the iconic Vossloh System W 300 ballastless high-speed track fastening assembly. Specially developed to handle the extreme dynamic requirements of high-speed passenger rail networks (operating at speeds exceeding 250 km/h to 350 km/h), the SKL 15 delivers a highly resilient, durable clamping solution for modern concrete slab tracks.
The primary function of the SKL15 elastic clip is to maintain structural gauge accuracy under massive high-frequency vibration, control longitudinal rail creep, and safely dissipate the massive kinetic stresses generated by accelerating high-speed trains.
Vossloh SKL 15 System Compatibility & Assembly Breakdown
To meet the strict alignment tolerances and low-noise demands of ballastless track infrastructures, the SKL 15 tension clamp functions as part of a highly integrated modular system. It interfaces seamlessly with the following key components:
1. Ballastless Slab Tracks & Concrete Sleepers
The SKL15 clip is specifically optimized for ballastless concrete slab tracks (such as Rheda 2000 or Bögl slab systems) and high-speed concrete sleepers built without concrete retaining shoulders.
2. Angled Guide Plates (Wfp 300)
Rather than resting on metal baseplates, the W300 system relies on Wfp 300 angled guide plates manufactured from glass-fiber-reinforced polyamide. These plates align the rail laterally, control the structural gauge, and isolate the rail electro-mechanically while directly transferring lateral wheel-load forces to the concrete deck.
3. Ss35 Screw Spikes & SDU Plastic Dowels
The SKL 15 tension clamp is anchored directly into the concrete foundation. It is fastened using high-tensile Ss35 sleeper screw spikes driven into embedded SDU plastic dowels / screwed inserts. This design accommodates a strict tightening torque specification to ensure an identical pre-tension force across every clip.
4. Highly Elastic Intermediate Pads (Zw 700 / cellentic)
It pairs with microcellular elastomer rail pads (such as Vossloh cellentic or Zw 700 series pads). These specialized pads provide high static and dynamic elasticity, protect the rigid concrete slab from structural fatigue, and offer supreme electrical insulation (>5kΩ) across active signal track blocks.
5. Supported Steel Rail Sections
The clip profile easily accommodates global standard high-speed steel rail tracks, including standard UIC60, 60E1, 136RE, and 50kg/60kg rail profiles.
Technical Specifications of SKL15 Tension Clamps
Every high-grade SKL 15 rail clip must be manufactured to stringent international railroad standards (such as DIN17221, EN13481-5, or GB/T1222) to resist premature plastic deformation under intense, high-frequency dynamic cycles.
Sourcing Vossloh-Compatible SKL15 Clips in China
When sourcing components for high-speed rail networks, procurement teams must demand maximum fatigue life and meticulous metallurgical trace-testing to prevent catastrophic in-track breakage.
As a prominent railway track material factory, Signum Rail Fasteners China manufactures premium SKL15 clips and comprehensive W300 fastening sets that provide 100% geometric and operational compatibility with original Vossloh track networks. We support custom OEM configurations and offer premier anti-corrosion protective coatings, including plain oiled, black oxide, hot-dip galvanization, and multi-layer zinc flake Dacromet coating engineered to pass rigorous 1000+ hour salt-spray testing.
Contact Signum Rail Fasteners China today to request a fast factory-direct quote, ask for material test certifications, or receive official engineering blueprints for your tracking needs!
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