Description
Technical Parameters
Fast Clips
| Feature | Description |
|---|---|
| Primary Function | To clamp the rail foot to the sleeper, maintaining track gauge and restraining longitudinal and lateral rail movement. |
| Key Principle | Elastic fastening. It uses a single, robust wire rod bent into a specific shape to provide a consistent spring force. |
| Common Names | FastenClip (FC), Fast Clip, Nabla-type Clip. |
| System Components | 1. The Fast Clip itself (a single-piece, pre-formed steel rod). 2. A Polymeric Insulator (often integrated with a shoulder). |
| Advantages | Simple two-part system, high toe load, excellent anti-vibration properties, easy and fast manual or automated installation, low maintenance. |
| Disadvantages | Requires precise installation tools to ensure correct deflection and toe load. |
Detailed Specifications & Types Table
| Aspect | Description & Details |
|---|---|
| Material | Made from high-quality spring steel (e.g., 60Si2CrA, 45CrMoV), which is heat-treated and often coated for corrosion resistance. |
| Key Parameters | • Toe Load: The clamping force applied to the rail foot. Fast Clips are designed for high toe loads (e.g., 9-12 kN). • Deflection: The vertical deformation during installation to generate the required toe load. |
| Common Types/Variants | • Standard FastenClip (e.g., FC 150x22): The most common type. • Stiffened Versions: Designed for extreme loads or sharper curves. • Insulated Versions: Coated or designed with plastic elements to ensure electrical isolation for signaling. |
Comparison with Other Common Fasteners
| Fastener Type | Principle | Comparison with Fast Clip |
|---|---|---|
| Dog Spike | Rigid fastening for wooden sleepers. | Fast Clip is superior: Elastic, higher holding power, maintains tension, suitable for concrete sleepers. |
| SKL Clip | Elastic fastening; uses a clip + separate tension washer. | Similar principle. Fast Clips are often a single-component system (clip + integrated insulator), potentially simpler and faster to install. Both offer high performance. |
| E-Clip (e.g., Pandrol) | Elastic fastening; a robust, stamped spring steel clip. | Comparable performance. Fast Clips are generally easier for fully automated installation due to their single-part nature and vertical installatio |
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