Rail clips (railway elastic clips) are core components of modern rail fastening systems. With their excellent elasticity and clamping force, they are widely applied across various types of railway tracks. While rail clips play an essential role in stabilizing rails, cushioning vibrations, and maintaining track gauge, they also present certain limitations that must be considered in specific applications.
Firstly, most rail clips are manufactured from high-strength spring steel, making their performance sensitive to environmental conditions. In high-temperature, low-temperature, or humid and corrosive environments, their fatigue life may decrease. Long-term exposure can lead to corrosion, cracking, or reduced clamping force. Without proper and regular maintenance, the overall stability of the fastening system may be compromised.
Parameters of Main Rail Clip Products
| Name | Rail clip | |||
| Type | E clip (e1809, e2006,e2007,e2009,etc) | |||
| Skl clip (skl1,skl3,skl12,skl14) | ||||
| Or the type by customers' drawings | ||||
| Material | 60Si2MnA | 60Si2CrA | 55Si2Mn | 38Si7 |
| Chemical composition(%) | C:0.56-0.64, Mn:0.60-0.90, Si:1.60-2.00, Cr:≤0.35, P:≤0.03, S:≤0.03 | C:0.56-0.64, Mn:0.40-0.70, Si:1.40-1.80,Cr:0.70-1.00 P:≤0.03, S:≤0.03 | C:0.52-0.60, Mn:0.60-0.90, Si:1.50-2.00,Cr:≤0.35 P:≤0.03, S:≤0.03 | C:0.35-0.42, Mn:0.50-0.80, Si:1.50-1.80, P:≤0.03, S:≤0.03 |
| Hardness | For e clip: 44-48HRC | |||
| For skl clip: 42-47HRC | ||||
| Fatigue life | for Dia.18 is 3 millions cycles without breaking | |||
| for Dia.20 is 5 millions cycles without breaking | ||||
| Surface | plain (oiled), Oxide black, color painting, HDG, Zinc Plating... | |||
| Standard refers | DIN17221, BS970, GB/T1222 | |||
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Secondly, although rail clips provide elasticity and damping capacity, they alone cannot fully absorb the high-frequency impact forces in heavy-haul and high-speed railways. For this reason, rail clips must work in combination with other fastening components such as rail pads, gauge blocks, and under-sleeper pads to ensure long-term durability and safety of the track structure. At the same time, rail clips require precise installation-if not properly positioned or if subjected to uneven stress, clamping force may be insufficient or excessively concentrated, leading to accelerated wear or early failure.
In addition, rail clip replacement and maintenance rely on manual operations. On railways with high maintenance demands, this may increase costs and workload. Therefore, in some industrial tracks or heavy-duty port railways, engineers often adopt hybrid fastening systems that combine elastic rail clips with bolted rail clamps or welded fastenings to compensate for the limitations of clips under extreme loads.
GNEE RAIL supplies high-quality rail clips, including E-clips, SKL clips, and Pandrol clips, and offers complete fastening solutions that integrate with rail pads, rail clamps, fishplates, and bolts. This ensures that all components work together to enhance overall track stability and extend service life. If you are looking for a cost-effective and high-performance rail fastening solution, please contact GNEE RAIL for professional support.
