Rail Insulator - Railway Fastening
Product Name:Railway Parts Nylon Rail Plastic Insulator
Material:PA66, PA66+30%Gf
Density:1.3-1.45g/cm3
Transport Package:Woven Bag and Wood Pallet
Color:Customized
what is a railway insulator?
A rail insulator is a component installed between the rail and the tie plate to adjust the rail gauge and provide electrical insulation between the rail and other parts like clips and bolts. They are crucial for high-speed or high-load trains and are typically made of reinforced nylon or other durable plastic, often performing a similar function to a rail pad but with greater thickness.
Types and materials of Angle Plate
- Types: Common types include E-type insulators for the E-clip fastening system and SKL insulators (also called guide plates) for the SKL fastening system.
- Materials: They are typically made from a durable and strong material like reinforced nylon 6 or 66, often with glass fillers for added strength. These materials are also often treated to be UV-stabilized for durability.
| Product | Rail Insulators for Railway Fastening System) |
| Raw Material | PA66, PA66+GF30%, HDPE, PA6 (Reinforced Nylon) |
| Standards | UIC, AREMA, BS, RDSO, DIN, JIS, ISCR, GB, VALEC, GOSTR- EASC, GB/T or other upon requirements |
| Weight | Depend on different models |
| Dimension | Depend on different models |
| Package | Moven bag, Box or other upon requirements |
| Delivery | Depends on order |
Key Characteristics of Rail Nylon Insulator
- Material: Typically made from high-strength, reinforced materials like Nylon-66 (PA66) with glass fiber for durability, heat resistance, and rigidity.
- Integration: Works with other components (clips, spikes, pads) in various fastening systems, like the Nabla system, to create a robust connection.
- Maintenance: Designed for easy replacement without major disassembly, improving maintenance efficiency.
What's the difference between Rail Insulators and Rail Pad?
A rail pad is a rubber or polyurethane cushion placed between the rail and sleeper, while a rail insulator is typically a thicker, rigid component made of nylon or composite, installed between the rail and tie plate. Both are used to reduce vibration and electrically insulate the rail, but the insulator is specifically designed for tasks like adjusting rail gauge and providing insulation for clips and bolts, often in high-speed or high-load systems.
Rail Pad
HDPE Rail Pad
| Technical Parameter | Unit | Technical Requirement | Value |
| Density | g/cm3 | 0.95-0.98 | 0.95 |
| Tensile Strength | Mpa | ≥19 | 19 |
| Elongation | % | >80 | 150 |
| Melting Point | ℃ | 170-190 | 190 |
| Insulation Resistance | Ω | ≥1×1010 | 3.5 ×1010 |
| Hardness | A | ≥98 | 98(A) |
| Technical Parameter | Unit | Value |
| Stiffness | KN | 90-130 |
| Hardness Shore A | ℃ | 72-80 degree |
| Electronic Resistance | Ω | ≥ 106 |
| Tensile Strength before Aging | Mpa | ≥12.5 |
| Elongation before Aging | % | ≥250 |
EVA Rail Elastic Pad
| EVA: Polyethylene 80%, Vinyl Acetate 20%. | |||
| Technical Parameter | Unit | Technical Requirement | Value |
| Density | g/cm3 | 0.95-0.98 | 0.95 |
| Tensile Strength | Mpa | ≥15 | 16 |
| Elongation | % | >500 | 550 |
| Melting Point | ℃ | 170-190 | 170 |
| Insulation Resistance | Ω | ≥1×1010 | 5.0 ×1010 |
| Hardness | A | ≥90 | 92(A) |
Rail Insulator's Role in Railway Fastening
- Gauge Adjustment & Maintenance: It plays a key role in the precise initial setting and long-term preservation of the rail gauge-the exact distance between the two running rails. Consistent gauge is fundamental for safe, smooth, and stable train passage, preventing excessive wheel-rail wear.
- Wear & Abrasion Protection: By creating a physical buffer, the insulator protects both the metal rail/fasteners and the concrete (or other material) sleeper from direct contact and friction. This significantly reduces mechanical wear and abrasion on all components, extending the service life of the entire fastening assembly.
- Enhanced Track Stability: Contributing directly to consistent track geometry, the insulator adds to the overall resilience and stability of the permanent way. It helps absorb vibrations and impacts, which is especially critical for maintaining performance under heavy loads and at high velocities.
GNEE RAIL offers different kinds of railway fasteners to meet client's requirements, such as Elastic Rail Clip and Clamp, Rail Screw Spike, Plastic Dowel, High Tensile Track Bolt with Nut, Rail Base(Tie) Plate, Rail Fish Plate, Railway Shoulder(Insert), Fish Bolt, Railroad Rubber and EVA Pad, etc. Samples and drawings provided by customer, we will manufacture qualified products accordingly.
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