Rail Insulator For Railway Fastening System
Rail insulator, also called railroad insulator, rail insulation, rail nylon insulator, it is installed between steel rail and tie plate, for adjusting rail gauge and electrically insulating railroad rails, rail clips and rail bolts from the interior of a concrete sleeper. Its function is the same as a rail pad, but it is thicker than rail pad.
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High-Strength Rail Insulator for Railway Fastening System
Rail insulator is a crucial component installed between the rail and the clip to provide electrical insulation and maintain precise rail gauge.
Technical properties of rail nylon insulators：
Rail nylon insulators (PA6/PA66 + 20-35% glass fiber) are critical railway components featuring high tensile strength (170–178 MPa), bending strength (250–290 MPa), and impact resistance (85 KJ/m²). They are UV-stabilized, heat-resistant (melting point ~270°C), and offer superior electrical insulation ( 5 x 10 ^8Ω) for heavy-load, high-speed rail fastening systems.
| Specification | Details |
|---|---|
| Product Name | Rail Insulator / Angle Plate / Guide Plate |
| Material | PA6, PA66, PA66+GF30%, HDPE |
| Density | 1.3 - 1.45 g/cm³ |
| Tensile Strength | ≥170 MPa |
| Insulation Resistance | ≥1×10⁸ Ω |
| Working Temperature | -40℃ ~ +80℃ |
| Color | Black / White / Customized |
| Application | High-speed Rail, Heavy Haul, Metro |
Application of rail insulator in rail fasteners system
Rail insulators, commonly made from high-strength materials like Nylon 6 or 66 with 20-35% glass fiber, are critical components in railway fastening systems. They act as essential electrical insulation between the rail, clips, and concrete sleepers while ensuring precise rail gauge adjustment.
How are railroad insulators manufactured?
- Raw Materials: We use engineering plastics like PA66 (Nylon) mixed with 20-30% glass fiber for strength, plus additives for UV and weather resistance.
- Drying: Materials are dried thoroughly because moisture can cause bubbles or weakness in the final product.
- Injection Molding: The dried plastic is melted and injected under high pressure into a precision steel mold that shapes the insulator.
- Cooling: The mold is cooled with water so the plastic solidifies quickly into the exact shape.
- Ejection & Trimming: The solid insulator is pushed out, and any small excess plastic (flash) is trimmed off.
- Quality Control: Each batch is tested for:
Dimensional accuracy (ensures perfect fit with rail clips).
Mechanical strength (tensile and impact tests).
Electrical insulation (resistance test).
- Packaging: Finished insulators are packed securely to prevent damage during transport.
FAQ
Q: What material are our rail insulators made of?
A: We use high-strength engineering plastics such as Nylon 66 (PA66) with 30% glass fiber reinforcement to ensure maximum durability and insulation performance.
Q: Can I get samples for testing?
A: Yes, we support pre-production samples. A sample cost is required, which will be refunded for mass production orders.
Q: How to ensure the insulator fits my rail type?
A: Please provide your rail standard (e.g., UIC60, 115RE) or a drawing. We can customize the insulator to match your specific gauge requirements.
GNEE RAIL is a professional manufacturer and exporter specializing in railway fastening systems and rail infrastructure components. Established in 2008, the company has accumulated extensive experience in the production and global supply of railway fasteners.
In addition to standard products, GNEE RAIL also offers customized manufacturing, technical consultation, and installation guidance, enabling clients to obtain complete railway fastening solutions tailored to specific project requirements. With a focus on quality, reliability, and international cooperation, GNEE RAIL continues to support railway infrastructure development worldwide.
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