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The Vossloh SKL 3 rail clip—also widely recognized in the railway industry as the SKL 3 tension clamp or W-clip—is engineered for full structural compatibility with designated configurations of the global Vossloh SKL rail fastening system.
As a heavy-duty elastic rail clip, the SKL 3 model is highly regarded across standard conventional tracks, urban transit networks, and heavy-haul freight lines experiencing intensive dynamic stresses.
Vossloh SKL 3 System Compatibility & Breakdown
To achieve the optimum vertical clamping force (toe load), proper track gauge maintenance, and complete electrical insulation, the SKL 3 tension clamp operates as part of an integrated railway fastening assembly. It seamlessly interfaces with the following track infrastructure components:
1. Railway Sleepers (Ties)
The SKL3 rail clip is optimized for concrete sleepers featuring pre-cast recesses. It is also widely used in specialized ballastless slab track systems and ballasted track infrastructure.
2. Baseplates & Angled Guide Plates
It pairs perfectly with ribbed iron baseplates and angled guide plates (rail insulators). These components match the precise lateral geometry of the SKL 3 W-clip, safely transferring lateral train forces directly to the concrete sleeper.
3. Screw Spikes & T-Head Bolts
Depending on the track design, the SKL 3 can be fastened using two primary methods:
· Indirect Fastening: Secured onto a ribbed base plate via HS32/26-M22 T-bolts (complete with hex nuts and flat washers).
· Direct Fastening: Anchored directly into concrete sleepers using heavy-duty Ss35 screw spikes driven into high-density polyethylene (HDPE plastic dowels).
4. Steel Rail Sections
The SKL3 clip accommodates a comprehensive layout of global rail profiles, specifically standard UIC54, UIC60, 50kg, and 60kg rails.
Technical Specifications of SKL3 Tension Clamps
Every SKL 3 rail clip must meet strict mechanical performance criteria to ensure railway safety under extreme axle loads. Below are the key manufacturing specifications:
Primary Applications of SKL 3 Clips
· Conventional Lines & Heavy-Haul Freight: Offers exceptional resistance to rail creep. It handles intensive axle loads, keeping tracks structurally stable under diverse freight conditions.
· Railway Turnouts & Switches: Because of its low spatial footprint and excellent structural rigidity, it is heavily relied upon across ribbed tie plate assemblies within complex track turnouts.
Sourcing High-Quality SKL3 Rail Clips in China
When purchasing replacement parts for a Vossloh-type rail fastening system, it is essential to source components that adhere strictly to international railway standards (such as DIN17221 or GB/T1222).
As an established manufacturer, Signum Rail Fasteners China produces premium SKL3 clips that offer 100% geometric and functional compatibility with original Vossloh rail fastening systems. We support custom OEM processing based on customer drawings, including specialized surface treatments (such as black oxide, plain oiled, or color anti-corrosion painting).
Contact Signum Rail Fasteners China today to receive a fast, competitive price quote or to request technical drawings for your next railway project.
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