Description
Technical Parameters
Nabla Elastic Rail Clip Application Specifications
| Category | Application Details | Technical Parameters | Standards Compliance |
|---|---|---|---|
| Track Types | Ballasted tracks, slab tracks, turnouts | Lateral resistance: 35-50 kN/clip | EN 13481-5, UIC 864 |
| Rail Profiles | UIC 54/60, BS 75R/113A, AREMA 115RE-136RE | Toe load: 8-12 kN (±0.8 kN) | AREMA Ch.30, TB/T 3065 |
| Sleeper Compatibility | Concrete (B70/B90), wood, steel sleepers | Installation torque: Hand-pressed (2-3 kN) | TSI INF 130/2014 |
| Environmental | Coastal, industrial, urban transit (humidity/salt/chemical exposure) | Corrosion resistance: >1200h salt spray | ISO 9227 |
| Speed Classes | Conventional (≤160 km/h), metro, light rail (Not for HSR >250 km/h) | Fatigue life: >3M cycles @ 2.5× load | DIN 45672 |
| Special Applications | Electrified tracks (insulated variants available) | Electrical resistance: ≥5 kΩ (with pad) | EN 50122-1 |
Installation Guidelines
| Step | Procedure | Tool/Equipment | Quality Check |
|---|---|---|---|
| 1 | Clean rail foot and sleeper shoulder (Ra ≤12.5μm) | Steel brush | No grease/debris |
| 2 | Align clip legs with sleeper shoulders | Nabla applicator (optional) | Full contact verification |
| 3 | Press vertically until "click" (audible engagement) | Manual force (2-3 kN) | 0.5mm max gap under legs |
| 4 | Verify toe load with calibrated gauge (10.5 kN ±0.8 kN for KPW-14) | Hydraulic load cell | ≥90% design force |
Performance Comparison
| Model | Clamp Force | Corrosion Protection | Optimal Use Case | Maintenance Interval |
|---|---|---|---|---|
| KPW-12 | 8-9 kN | ZnAl15 coating | Light rail/tram (low axle load) | 8-10 years |
| KPW-14 | 10-11 kN | ZnAl15 + epoxy | Metro/heavy freight (25t axle load) | 10-12 years |
| KPO-16 | 11-12 kN | AISI 304 stainless steel | Coastal/high-humidity environments | 15+ years |
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