Rail pads are used to cushion the impact of trains, reducing noise, vibration, and wear on the track. They perform key functions such as distributing the load from the train over a larger area, preventing abrasion of the rail and sleeper, and providing electrical insulation in some systems.
Primary functions
- Load distribution: Pads spread the concentrated weight from the train wheels over a wider surface area of the sleeper, reducing stress and preventing fatigue cracking in the concrete.
- Cushioning and shock absorption: They act as a buffer, absorbing the impact from passing trains and mitigating shock on the track structure.
- Noise and vibration reduction: By absorbing vibrations, rail pads significantly lower the noise level produced by trains, which is especially important in urban or residential areas.
- Wear reduction: The cushioning effect minimizes friction and abrasion between the steel rail and the support structure, extending the life of both components.
Additional functions
- Electrical insulation: In electric rail systems, pads provide a layer of electrical insulation between the rail and the sleeper to protect signaling systems.
- Sealing: They can create a seal between the rail and the sleeper, preventing dirt and water from getting in.
- Structural support: By absorbing uneven contact, they help maintain the overall stability and elasticity of the track system.
Rail pad materials
| 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 | 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) |
| 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 |
Our EVA/HDPE/rubber rail pads are with high elasticity, applying to types for rails such as rail UIC54, UIC60, BS80lbs,BS100lbs, and sizes as ordered. The pads can be customized with or without grooves, in various possible designs, depending on customers' requirements.
