High Speed Rail Fastening System
Rail fastening systems are connectors between the rails and railroad sleepers. They are essential to the fixing of the rails to railroad sleepers to provide strong and flexible connection between rail and its supporting structure.
What is rail fastening system?
Rail fastening systems are connectors between the rails and railroad sleepers. They are essential to the fixing of the rails to railroad sleepers to provide strong and flexible connection between rail and its supporting structure. It is a fundamental component in ensuring the safe and efficient operation of each railway track.
High Speed Rail Fastening System from GNEE RAIL
High speed rail tracks generally rely on the rail fastening systems to adjust the precisions of the ballastless tracks. Our key high speed rail fastening system products include Spring Clip IV fastening system, Spring clip V fastening system, WJ-7 fastening system and WJ-8 fastening system.
Spring Clip IV Fastening System
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Number of Parts for Each Set of Rail Clip IV Fastening System |
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1 |
G4 spring clip |
2 |
60Si2MnA |
1.60kg |
Used in general areas |
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JA spring clip |
1.26kg |
Used at rail joints |
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JB spring clip |
1.28kg |
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|
2 |
Rail shoulder TZ4 |
2 |
QT450-10 |
2.80Kg |
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|
3 |
Rail insulator G4 |
2 |
PA66 |
107.3cm3 |
Used in general areas |
|
Rail insulator G4J |
2 |
91.4cm3 |
Used at rail joints |
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|
4 |
Rubber pad RP4 |
1 |
Natural or synthetic rubber |
250cm3 |
|
Spring Clip V Fastening System
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Type V Fasteners System Component List |
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Item |
Quantity |
Material |
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Rail clip |
2 |
60Si2MnA |
|
Screw spike |
2 |
20MnTiB |
|
Flat washer |
2 |
Q235A |
|
Space pieces |
2 |
Q235A |
|
Gauge apron |
2 |
Rubber |
|
Rail pad |
1 |
EVA, or rubber |
|
Adjustable pad |
1 |
PE |
|
Plastic dowel |
2 |
PA66 |
What are the common fasteners that make up a high-speed rail fastening system?
Key fastener components
- Elastic Clips: These are the primary fastening elements that apply pressure to the rail.
| 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 | |||
- Screw Spikes or Bolts: These are used to hold the clip or other components to the sleeper. High-speed systems often use screw spikes for their holding power, which are then secured with a nut.
- Rail Pads: These are installed between the rail and the sleeper, typically made of plastic or rubber. They reduce shock and vibration, absorb impact, and provide electrical insulation.
- Rail Anchors: These prevent the rails from moving longitudinally along the track.
- Plastic Dowels/Insulators: In systems with concrete sleepers, plastic components are used to provide insulation and maintain the gauge between the rails, which is crucial for preventing track damage and ensuring electrical safety
What are the unique advantages of the High Speed Rail Fastening System?
The unique advantages of high-speed rail fastening systems include enhanced safety and stability through strong clamping force, which prevents rail movement under high dynamic loads. They also provide increased durability and longevity, lower lifecycle costs due to wear-resistant materials, and greater passenger comfort by reducing noise and vibrations. Furthermore, these systems allow for faster, more efficient installation and maintenance, often through pre-assembled and automated components.
- Safety and stability
Strong clamping force: Modern systems maintain a constant, high clamping force to keep rails stable and prevent derailments, even under the dynamic stress of high-speed trains.
Vibration absorption: Elastic components, such as spring clips and rubber pads, are designed to absorb vibrations and shocks, contributing to a smoother ride and improved safety.
High resistance: Advanced systems have high electrical resistance to ensure safety in all conditions and are built to resist wear and corrosion.
- Durability and cost-effectiveness
High-strength materials: Systems use high-strength, wear-resistant materials that resist corrosion and fatigue, leading to a longer service life.
Reduced maintenance: The durability and reliability of modern fasteners mean fewer replacements and repairs, which lowers the overall lifecycle cost.
Resilience in various climates: Rust-proof and high-grade elastic parts ensure reliable performance across a wide range of weather conditions, from cold winters to hot summers.
- Efficiency and comfort
Fast installation: Many systems are pre-assembled and designed with simple, automated mechanisms that allow for rapid installation and maintenance, which is crucial for mechanized track laying.
Noise reduction: The use of specific materials, like rubber pads, helps to dampen noise and vibration, leading to a more comfortable experience for passengers.
GNEE RAIL has been deeply engaged in the railway fastener trade for over a decade, specializing in providing reliable fastening system solutions for overseas railway projects. We have established a strategic partnership network with high-quality manufacturers nationwide. Through a rigorous supplier audit mechanism and a three-level quality inspection process, we ensure that every batch of our spring clips, fishplates, insulated gauge blocks, and other products meets international standards such as EN and ASTM. GNEE will continue to optimize its cross-border service system, ensuring that Chinese-made railway fasteners securely connect every section of track around the world.
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