What materials are rail pads composed of?
Rail pads play a critical role in the stability and maintenance of railway systems. As an essential component in solidifying the relationship between the rail and the railway sleeper, they provide not only structural support but also enhance the overall performance of railway infrastructure.
GNEE RAIL provides exceptional elastic rail pads of various types for high-speed railways, normal-speed railways, and cranes. Especially the rail pads made of rubber, EVA, TPEE, and HDPE are very popular with customers. Our railway rubber pads fit the rails such as UIC54, UIC60, BS80lbs, BS100lbs, etc. We have more than 130set of machines in our production lines which can reach an annual production capacity of up to 2000, 000 pieces of rail pads. We offer a wide range of rail pads and other track materials at competitive prices
| 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 |
| 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) |
| 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) |
Material selection requires comprehensive consideration of track design parameters, operating conditions, and total lifecycle cost. With advancements in materials science, new technologies like nano-modification and dynamic crosslinking further improve pad properties such as aging resistance, fatigue resistance, and environmental adaptability.
Rail Pads production process
- Rubber compound preparation
- Mixed by an internal mixer or a two-roll mill. In terms of the internal mixer, the raw materials are processed by single or double stage, during which the masterbatch prepared ahead of time is finalized by adding curing agents to the twin roll mill.
- Shaping and curing
- Compression or Injection molding
- End products trimming
- Ready for use
The advantages of excellent safety performance, reliable high technology, advanced testing equipments of rail pad make itself be widely adopted and manufactured throughout the world together with raw materials with good quality. GNEE RAILcan manufacture various rail rubber pads in different widths according to different railway base dimensions and standard steel rail length to meet customer's special demands.
