Description
Technical Parameters
Rail skl Clip Fastening System
The SKL clip is a high-tension elastic rail fastening with a distinct double-coil spring design . Manufactured from high-grade spring steel like 60Si2CrA or 38Si7, it secures rails to concrete sleepers through controlled spring deflection . The system uses angled guide plates and screw spikes to provide consistent clamping force . SKL fastenings are widely used in high-speed and heavy-haul railways globally
Technical Specifications:
| Parameter | Description | Typical Value/Range |
|---|---|---|
| Clip Types | SKL variants | SKL-1, SKL-3, SKL-12, SKL-14 |
| Wire Diameter | Spring steel bar size | 13mm |
| Material Grade | Spring steel alloy | 60Si2CrA / 60Si2MnA / 38Si7 |
| Hardness Range | Rockwell C scale | 42-47 HRC |
| Toe Load | Clamping force per clip | 10-14 kN |
| Fatigue Life | Cycles before failure | ≥ 5 million cycles |
| Weight Per Clip | Single unit | 0.48-0.53 kg/pc |
| Applicable Rails | Rail profile compatibility | UIC54, UIC60, 115RE, 136RE |
Installation & Maintenance Perspective:
- Provides toe load of 10-14 kN per clip for rail security
- Achieves 5 million fatigue cycles without fracture under standard loading
- Self-tensioning design absorbs vibrations and dynamic wheel impacts
- Maintains clamping force even after millions of load cycles
- Central loop acts as integrated safety mechanism preventing overstretching
Maintenance & Operational Perspective
- Factory pre-assembly on sleepers enables rapid automated track laying
- Captive fastening reduces loose component handling and loss risk
- Gauge adjustment possible by swapping guide plates without changing sleepers
- All components including concrete dowels are replaceable individually
- Clips simply loosened and moved from parked to working position on site
Gnee Professional supplier
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