Description
Technical Parameters
Railway E Clips / E-Type Retaining Rings Technical Specification Table
| Feature | Description & Specifications | Notes / Purpose |
|---|---|---|
| Product Name | Railway E Clip, E-Type Retaining Ring, Axle Clip, Wheel Clip | Common names used in the railway industry. |
| Application | Used in the final drive assembly of freight car wheels, bogies, and other rail vehicle axle systems. | A critical safety component in the wheelset. |
| Material | High-Carbon Spring Steel (e.g., AISI 1065, 1070, 1080) Alloy Spring Steel (e.g., 50CrV4, 60Si2Mn) |
Chosen for high elastic limit, fatigue resistance, and durability. |
| Key Dimensions | • Diameter (D): Matches the axle journal diameter (e.g., 6", 6.5", 7" for AAR standards). • Thickness (T)/Width (W): Critical for fitting the groove. • Height (H): Determines the grip and retention force. • Gap (G): Allows for compression during installation. |
Dimensions are precisely controlled to ensure a secure fit in the axle groove. |
| Installation | Pressed into a machined groove on the axle using a special hydraulic press and installation tooling (cone-shaped mandrel). | Requires specific equipment and procedures to ensure it is seated correctly without damage. |
Railway E-Clips (Technical Specification Table)
| Parameter | E10 (Light Rail/Tram) | E12 (Standard Mainline) | E18 (High-Speed Railway) | E20 (Heavy-Haul Railway) |
|---|---|---|---|---|
| Model Designation | E10 | E12 | E18 | E20 |
| Applicable Rail Profile | 22–30kg/m Light Rail/Tram | 43–50kg/m Mainline Rail | 60kg/m High-Speed Rail | 60–75kg/m Heavy-Haul Rail |
| Base Material | 50CrVA Spring Steel | 60Si2MnA Spring Steel | 60Si2CrVA High-Strength Steel | 55SiMnVB Alloy Spring Steel |
| Heat Treatment | Quenching + Tempering (410–450°C) | Quenching + Tempering (420–460°C) | Quenching + Tempering (440–480°C) | Quenching + Tempering (430–470°C) |
| Hardness (Rockwell) | HRC 41–46 | HRC 43–48 | HRC 46–52 | HRC 45–50 |
| Tensile Strength | ≥1275 MPa | ≥1370 MPa | ≥1765 MPa | ≥1570 MPa |
| Yield Strength | ≥1175 MPa | ≥1275 MPa | ≥1665 MPa | ≥1470 MPa |
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