The rail pad, also known as bottom plate, is an elastic polyurethane pad assembled between the rails and sleeper to protect the top of the sleeper from wear and impact. The initial stiffness of the rail pad is not so high that the deformation of the rails under the load of the spring is very large.
Can rail pads on railway tracks provide electrical insulation?
Yes, rail pads on railway tracks absolutely provide essential electrical insulation, stopping stray currents, protecting signaling systems, and preventing corrosion, typically by being made of elastomeric materials like rubber or advanced polymers placed between the steel rail and concrete sleeper. They are crucial for sensitive electronic signaling and maintaining the integrity of electrified tracks.
How railroad pad provide insulation?
- Material: Rail pads use specific rubber compounds or engineering plastics (like Nylon-6) that are inherently non-conductive.
| Raw Material | Rubber, EVA, TPEE, HDPE |
| Standard | UIC, AREMA, TB/T2626-95 |
| Application | 43kg/m, 50kg/m, 60kg/m, 75kg/m,115RE, UIC54, UIC60, S49 |
| Model number | 43-7-7, 43-10-7, 50-7-9, 50-10-9, 60-10-17, 60-12-17 |
| Operating temperature | -50~70 degrees |
| Certificate | MSDS, ROHS, REACH |
| Notes | They should be stored in a clean, ventilated place. Don't be in direct sunlight, and keep away from the heat source and chemical reagent. Don't touch the oil, organic solvent, and other chemicals. Banned exposure. |
- Placement: They sit directly between the steel rail and the concrete sleeper (tie), creating a barrier that separates the conductive rail from the track bed.
Which material provides the best insulation?
For electrical insulation in rail pads, high-performance engineered plastics like HDPE (High-Density Polyethylene) and specific polyurethanes, along with certain high-resistance synthetic rubbers, offer excellent electrical resistance, but EPDM (Ethylene Propylene Diene Monomer) rubber and specialized blends often provide the best balance of electrical insulation, durability, and vibration damping crucial for signaling systems and track longevity.
The rail pad laid under the rail is used to guarantee:
- The load distribution covering a larger surface area
- Reducing load concentration and usage fatigue stress
- Even contact area between the rail and supporting components
- Reducing noise and structural vibrations
- Sealing function between the top support and rail bottom
- Reducing rail wearing and relevant supporting components
As a professional manufacturer of rail fasteners, GNEE RAIL is able to produce rail pads of various rail pads, such as UIC54, UIC60, BS80lbs, BS100lbs and so on. In addition, we can offer custom-made track pads according to drawings or samples.