↵Rail skl Clip Fastening System
The SKL (Spannkraftclip Lager) clip is a pre-assembled elastic rail fastening system designed for direct fixation of rails to concrete sleepers in ballastless track applications. Manufactured from high-grade spring steel with corrosion-resistant coatings, this all-in-one assembly integrates a tension clip, base plate, and insulation components to provide permanent, maintenance-free rail restraint. Characterized by its constant clamping force and consistent toe load performance, the system offers superior vibration damping, longitudinal rail restraint, and electrical insulation properties that exceed 100Ω·km track circuit requirements.
Technical Specifications:
| Model Designation | Speed Category | Axle Load Limit | Clamping Force Range | Primary Application | Compliance Standards |
|---|---|---|---|---|---|
| SKL-1 | ≤160 km/h | 22.5t | 9-11 kN | Regional lines, light transit | EN 13481-5, Type A |
| SKL-3 | 160-200 km/h | 25t | 10-12 kN | Inter-city corridors | EN 13481-5, Type B |
| SKL-12 | 200-300 km/h | 25t | 11-13 kN | High-speed main lines | EN 13481-5, Type C |
| SKL-15 | ≤120 km/h | 30t | 12-14 kN | Heavy haul freight | AREMA Ch.30, Type D |
| SKL-24 | ≤250 km/h | 27t | 13-15 kN | Mixed traffic lines | EN 13481-5, Type E |
| SKL-30S | ≤160 km/h | 22.5t | 9-11 kN | Coastal/marine environments | ISO 12944 C5-M |
| SKL-HSR | 300-350 km/h | 17t | 10-12 kN | Dedicated HSR lines | GB/T 33959 |
| SKL-SE | ≤200 km/h | 25t | 11-13 kN | Seismic zone applications | JIS E 1201 |
Application Scenarios
Primary installation on slab track systems for high-speed railways
Used in tunnel sections where maintenance access is restricted
Applications in seismic zones due to superior rail retention capability
Deployed on bridge decks with integrated vibration control
Implementation in station throats with complex track geometry
Maintenance & Operational Perspective
- Transition zones between ballasted and ballastless tracks
- Grade crossings with enhanced impact resistance
- Depot and siding areas with occasional low-speed traffic
- Elevated guideways with noise reduction requirements
- Maintenance bypass tracks with temporary installation capability
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