| Customization: | Available |
|---|---|
| After-sales Service: | Returns and Exchanges |
| Warranty: | 1 Year |
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What is a railway insulator?
Railway insulator,also known as rail nylon insulator, railroad epoxy insulator or rail insulation, is a crucial component used in railway track systems that electrically isolates the rail from the supporting structure (like a concrete sleeper or tie), typically made from a material like nylon with glass fiber reinforcement. The primarily functions to prevent unwanted electrical currents from flowing through the rail while also helping to adjust the rail gauge by providing a spacer between the rail and the fastening system. Essentially it acts as both an electrical insulator and a mechanical spacer within the track assembly. 
Types of Railway insulators available in the market:
E-type rail insulators
SKL rail insulators
Nabla rail Insulators
- E-type rail insulators:
E-type railway insulators, together with rail shoulders, rail pads, as well as E-clips are used in E-clip fastening systems to soften the passing train's stress onto the rail and return it to its original position.
- SKL rail insulators:
SKL railway insulators, also known as guide plates, are used in SKL fastening systems and are utilized in conjunction with screw spikes, SKL tension clips, flat washers, plastic dowels, as well as rail pads.
- Nabla rail insulators:
Nabla railway insulators are generally used in the Nabla clip rail fastening systems, where they work alongside other fastener elements such as screw spikes, Nabla clips, as well as spring washers.
Signum Machinery Technology Co., Ltd. offers Railway insulators for E-type rail fastening system, SKL rail fastening system, Nabla rail fastening system, and other applications in natural colors or as requested by customers.
The rail insulators are made of nylon 6 or Nylon 66 with glass filler content 20% to 35%, with high performance on usage life and mechanical purpose.
Below are the characteristics of rail spacer:
| Technical Parameter | Unit | Technical Requirement | Value |
| Density | g/cm | 1.3-1.45 | 1.45 |
| Tensile Strength | Mpa | ≥170 | 178 |
| Elongation | % | ≤4.4 | 4.0 |
| Bending Strength | Mpa | ≥250 | 290 |
| Impact Strength (No gap) | KJ/m2 | ≥80 | 85 |
| Melting Point | ºC | 250 - 270 | 270 |
| Insulation Resistance | Ω | ≥1×108 | 5×108 |
| Glass Fiber Content | % | 30-35 | 35 |
| Hardness | HRR | ≥110 | 118 |
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