The E-type rail clip is an elastic fastener manufactured from specific grades of spring steel (e.g., 60Si2MnA, 60Si2CrA) through precision heat treatment processes such as hot forging, quenching, and tempering. Its diameter typically ranges between 18–23 mm, with hardness strictly controlled within 44–48 HRC. It exhibits excellent elastic recovery and fatigue resistance, capable of withstanding 3–5 million cycles of load without failure, making it suitable for long-term adaptation to the vibration and impact environments generated by train operations.
The E 2055 rail clip is a type of fastening component used in the railway industry to secure rails to railroad ties or sleepers. Rail clips play a crucial role in maintaining the stability and integrity of the railway track system by preventing lateral movement of the rails.
| Item | Diameter | Material | Weight | HRC Under pressure | Fatigue test |
|---|---|---|---|---|---|
| E2055 | ø20 | 60Si2MnA, 60Si2Cr, 55Si2Mn, 38Si7 | 0.80 kg | 44-48 | ≥950kg 5000000 times without breaking |
What are the fatigue testing standards for the e2055 rail clip?
E2055 rail clip fatigue testing requires clips to withstand 5 million load cycles without breaking, often under specific deflection ranges (e.g., 10-12mm deflection) and loads (e.g., ~950kg or higher), referencing standards like GB/T 1222 and DIN 17221, ensuring durability for demanding railway applications.
Key Fatigue Testing Requirements:
Cycle Count: 5,000,000 cycles (5 million) without fracture is a common target.
Load/Deflection: Tests involve applying dynamic loads and measuring deflection, with requirements often stated as:
Load: ≥950kg or higher, with specific deflections like 11.1mm or within 10-12mm for the toe.
Toe Load (Clamping Force): Over 2750 lbs (12.6 kN) at specified deflection.
Standards Reference: Test specifications often refer to:
GB/T 1222 (Chinese National Standard).
DIN 17221 (German Standard for spring steel).
Material: Made from spring steel (e.g., 60Si2MnA), tested for hardness (HRC 42-48) and microstructure.
| 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 |
Component of Pandrol Fastening System
The E2055 is not used in isolation but as part of a complete fastening assembly. A typical E-clip system consists of:
1.Two E-clips, one for each side of the rail.
2.Two rail shoulders or lugs, cast into the concrete sleeper or baseplate.
3.One rail pad, placed between the rail and the baseplate to reduce vibration.
4.Two insulators, used in electrified rail to isolate the clips from the rail.
| Item included | Quantity | Material | Size | Remark |
|---|---|---|---|---|
| E clip | 2 | 60Si2MnA, 60Si2CrA | Dia. 16mm,18mm or 20mm (E1809, E2006,E2007,E2009,etc | Hardness: 44-48HRC |
| Toe Load: Dia.16mm: 500-700kgf; Dia.18mm:750-900kgf; Dia.20mm:1100-1400kgf | ||||
| Fatigue life: 5 millions cycles without breaking | ||||
| Standard: DIN17221, BS970, GB/T1222 | ||||
| Shoulder | 2 | QT500-7, QT450-10 | For UIC54, UIC60, 115RE, BS80lbs, BS100lbs, 50kg rail, 60kg rail, etc. | Note: Hardness of E-clip is 44-48HRC; Toe Load for E-clip is 500-700kgf (Dia.16mm); 750-900kgf(Dia.18mm); 1100-1400kgf(Dia.20mm); Fatigue life of E-clip is 5 millions cycles without breaking DIN17221, BS970, GB/T1222 qualified E-clip |
| Rail pad | 1 | HDPE, rubber or EVA | ||
| Insulator | 2 | Reinforced Nylon 66 (PA66) |
GNEE RAIL offer an extensive range of rail clips with optimum quality, these rail clips are designed with high precision and made up of premium grade spring steel. GNEE has been the largest and most competitive production base of rail clip in China after more than 18 years' rail clip producing experience, and have qualification to tender nationally large and medium scaled rail projects. What's more, our rail clip can be customized according to clients' requirements.
