Description
Technical Parameters
Nabla Clip Fastening System - Technical Specifications
| Category | Parameter | Specification | Standard/Value |
|---|---|---|---|
| Basic Information | Type | Self-locking elastic rail fastening clip (∇-shaped) | EN 13481-5, UIC 864 |
| OEM Examples | Vossloh Nabla, Pandrol KPO, Schwihag KPW | Manufacturer-specific designs | |
| Dimensions | Length | 140-180 mm (varies by series) | KPW-14: 145mm ±0.5mm |
| Wire Diameter | 13-14 mm | Tolerance: ±0.2mm | |
| Clip Height | 42-48 mm (installed) | Deflection-dependent | |
| Material | Clip Steel | 60Si2MnA spring steel (EN 10089) | Yield strength: ≥980 MPa |
| Hardness | 44-48 HRC | ISO 6508 | |
| Coating | Zinc-aluminum (ZnAl15, 80-120μm) or stainless steel (AISI 304) |
Nabla Clip Series Comparison
| Model | Clamp Force | Length | Coating | Best For | Service Life |
|---|---|---|---|---|---|
| KPW-12 | 8-9 kN | 140mm | ZnAl15 | Light rail/tram | 15 years |
| KPW-14 | 10-11 kN | 145mm | ZnAl15+epoxy | Metro/conventional rail | 20 years |
| KPO-16 | 11-12 kN | 160mm | Stainless steel | Coastal/high-humidity | 25+ years |
Key Advantages
- Tool-Free Installation: ∇-shape allows manual pressing (no hydraulic tools required).
- Vibration Resistance: Unique geometry dampens 30% more vibration vs. SKL clips.
- Anti-Theft Design: No removable parts (unlike bolt-fastened systems).
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