How do Rubber Rail Pads work together with other railway fasteners?
Rubber rail pads play a critical synergistic role within the railway fastening system, working together with other components to form a complete mechanical transfer system.
| Rubber Rail Pad | ||
| 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 |
When train wheelsets apply force to the rail, impact loads are transmitted through the rail web to the rail foot, where the rubber pad's elastic deformation mechanism immediately activates-its unique polymer molecular structure absorbs approximately 35% of kinetic energy through compression and rebound, while redistributing the remaining load across the concrete sleeper's bearing area.
This elastic buffering dynamically balances with the constant clamping force of rail clips: the clips secure the rail with 14-16 kN of initial toe load, while the rubber pad provides continuous counterforce through 7-12% compression. Under increased load, the pad's non-linear stiffness characteristics emerge-initial low stiffness (≈70 kN/mm) ensures cushioning, while dynamic stiffness progressively increases to 130 kN/mm under greater pressure, effectively restraining excessive rail displacement.
For electrical insulation, the pad and engineering plastic insulating gauge blocks form a dual protection system. The pad's volume resistivity of 10⁶ Ω·m blocks current passage to the sleeper, while the gauge blocks provide lateral insulation at the rail head, collectively ensuring stable track circuit signal transmission. Regarding environmental adaptability, the pad's weather resistance complements the clip's anti-corrosion coating: pads prevent moisture penetration to fastener interfaces, while surface treatments on clips resist atmospheric corrosion.
GNEE RAIL's collaborative design approach optimizes component compatibility through finite element analysis, achieving ideal coupling between pad stiffness and clip pressure curves. Our system solutions have undergone 2 million fatigue verification cycles, ensuring all components maintain synergistic performance under long-term dynamic interaction.
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.
