What are the different types of Rubber Rail Pads?
Rubber rail pads can be categorized by their application, such as under-rail pads and under-sleeper pads, or by their design features like grooved or studded pads. Other classifications include material (e.g., SBR, NBR, EVA) and type (e.g., ordinary, widened, turnout). The specific type is chosen based on factors like rail load, speed, and environmental conditions.
| 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 |
By application
- Under-rail pads: Placed directly under the rail to provide a contact surface.
- Under-sleeper pads: Positioned beneath the sleepers to distribute load and absorb shock from the sleepers to the ballast.
- Under-ballast pads: Placed under the ballast layer to reduce vibration and noise throughout the track structure.
By design and features
- Grooved pads: Designed with a groove pattern on the surface, often for enhanced impact attenuation.
- Studded pads: Feature a studded or textured surface, which can provide increased durability and grip in demanding conditions.
- Continuous/Ribbed: Continuous or ribbed designs are available depending on the specific application and vibration absorption needs.
- Insulated pads: Designed to prevent electrical current from passing through the track, important for signaling systems.
- Widened/Ordinary: Distinguished by their width, with widened types used to cover a larger area under the rail.
Manufacturing Process of rail pads
- Preparation of rubber compound
- Mixing is carried out on a two-roll mill or in an internal mixer. In the case of an internal mixer, it can be done in a single-stage or double-stage mixing where the masterbatch, which was earlier prepared in the internal mixer, is finalized by adding curatives on a two roll mill.
- Shaping and curing
- Compression or Injection moulding
- Trimming of finished products
- Ready for use
As a professional rubber rail pad manufacturer GNEE RAILWAY RAILWAYL can produce various standards of rubber rail pads and other rail fasteners. If you want to build a railway line, do not hesitate to contact us, we can supply all types of rubber rail pads with different materials. If necessary, we can make customized rubber rail pad production.
