Description
Technical Parameters
Railway SKL Clips
| Parameter | SKL 12 (Standard Passenger/Freight) | SKL 14 (Heavy-Haul Railway) | SKL 15 (High-Speed Railway) | SKL 10 (Urban Rail Transit) |
|---|---|---|---|---|
| Model/Type | SKL 12 | SKL 14 | SKL 15 | SKL 10 |
| Applicable Rail Section | UIC 54 (43kg/m), UIC 60 (60kg/m) | UIC 60 (60kg/m), 75kg/m Heavy-Haul Rail | UIC 60 (60kg/m), CRH High-Speed Rail (60kg/m) | Light Rail (30kg/m), Tram Rail (22kg/m) |
| Matching Rail Pad | 10mm Thick Rubber/Polymer Pad | 12mm Thick Wear-Resistant Pad | 15mm Thick High-Elasticity Pad | 8mm Thick Vibration-Damping Pad |
| Material | 60Si2MnA Spring Steel | 55SiMnVB Alloy Spring Steel | 60Si2CrVA High-Strength Spring Steel | 50CrVA Spring Steel |
| Heat Treatment | Quenching + Tempering (420-460℃) | Quenching + Tempering (430-470℃) | Quenching + Tempering (440-480℃) | Quenching + Tempering (410-450℃) |
| Hardness (Rockwell) | HRC 43-48 | HRC 45-50 | HRC 46-52 | HRC 41-46 |
| Tensile Strength | ≥1370MPa | ≥1570MPa | ≥1765MPa | ≥1275MPa |
| Yield Strength | ≥1275MPa | ≥1470MPa | ≥1665MPa | ≥1175MPa |

Comparison with Other Clips (e.g., E-Clip, Nabla Clip)
| Feature | SKL Clip | Pandrol® 'e' Clip | Nabla Clip |
|---|---|---|---|
| Installation | Tensioned and locked into place with a bolt/nut. | Pressed down ("nipped") onto a shoulder. | Hammered or pressed into a housing. |
| Tool | Manual or hydraulic wrench for the bolt. | Special hydraulic "nipping" tool. | Manual hammer or press. |
| Visual ID | Distinctive shape, secured by a bolt on one side. | Classic "E" shape. | Inverted "V" or "nabla" (∇) shape. |
| Key Advantage | Very secure, resistant to loosening, high toe load. | Simplicity, widespread use, easy installation. | Simple design, no small parts, good fatigue life. |
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