Description
Technical Parameters
Railway Rail Shoulders
| Parameter | Specification |
|---|---|
| Product Name | Rail Shoulder, Baseplate, or Sole Plate |
| Primary Function | 1. Hold Rail Inclination: Maintains the correct rail cant (typically 1:40 or 1:20). 2. Transfer Load: Distributes the immense load from the rail to a wider area of the sleeper. 3. Secure Fasteners: Provides anchored points or shoulders for rail clips and other fastening components. |
| Compatible Sleeper | Primarily Concrete Sleepers (Pre-stressed concrete, bi-block). Also used on Steel Sleepers and Timber Sleepers (in this case, often called a "tie plate"). |
| Material | Ductile Iron (Spheroidal Graphite Iron), Malleable Cast Iron, or Forged Steel. |
| Surface Treatment | 1. Bituminous Paint / Black Paint 2. Epoxy Coating 3. Zinc Metallizing |
Common Types of Rail Shoulders
| Shoulder Type | Image | Key Characteristics | Common System |
|---|---|---|---|
| Pandrol Shoulder | (Features a curved profile for the PR clip) | Has a "jaw" that holds the Pandrol PR clip. May use a shoulder insert for fine adjustment. | Pandrol |
| Nabla (SKL) Shoulder | (Has a central block with angled faces) | The Nabla clip rests and pivots against the angled faces of the shoulder. | SKL, Vossloh |
| Fast-Clip Shoulder | (Often a simple, robust block) | Designed for the Fast-Clip to be pressed down over the rail foot and onto the shoulder. | Vossloh 300 Series |
| E-Clip Shoulder | (Features a specific groove for the leg of the E-clip) | The shoulder provides the leverage point for the E-clip's clamping action. | Chinese CRTS Systems |
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