Rail Pad is a specialized elastic component designed for diverse track scenarios. Based on line types, it includes models for high-speed railways, heavy-haul railways, urban rail transit, conventional railways, etc. Pads for high-speed railways require a high elastic modulus (15–30 MPa) to balance smoothness and stability; those for heavy-haul railways need enhanced compressive strength (≥15 MPa); pads for urban rail transit focus on low noise (noise reduction ≥8 dB); and pads for special environments such as extremely cold regions require low-temperature-resistant materials (no brittleness at -40°C).
| 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. |
What is the compressive strength compliance value for rail pads?
Rail pad compressive strength isn't a single value but varies by material (HDPE, Rubber, EVA) and standard, focusing more on stiffness (kN/mm) for load transmission and compression set (%) for long-term elasticity, with examples like HDPE pads needing ≤25% set and rubber ≤30% set at specific conditions, while stiffness might range from 5-92 kN/mm depending on track design. Compliance depends on meeting specific EN/DBS standards (like EN 13481, DBS 918235), testing static/dynamic loads (e.g., 180 kN), and controlling factors like compression set and electrical resistance.
Key Compliance Metrics:
- Compression Set: Measures permanent deformation after load removal, indicating elastic recovery. Lower is better (e.g., HDPE ≤25%, Rubber ≤30%).
- Stiffness (c): Crucial for load distribution and vibration dampening, specified in kN/mm (e.g., 5-92 kN/mm).
- Tensile Strength/Elongation: Material strength (e.g., Rubber ≥12.8 MPa tensile, ≥260% elongation).
- Electrical Resistance: Required for track safety (e.g., ≥10^6 Ω).
Examples by Material:
- Rubber Pads: Compression set ≤30% (25% strain, 70°C, 22h).
- HDPE Pads: Compression set ≤25% (20% strain, 50°C, 22h).
- EVA Pads: Higher stiffness, lower compression set potential, used in specific ballastless systems.
Rail Pad Function in Railway Fastening System
The raid pad prevents rail-sleeper abrasion and the crushing of the sleeper under the rail foot. Rubber rail pads are normally designed to a specified load-deflection characteristic. The initial stiffness of the rail pad is designed to be low, their deformations under the springs toe loads is quite substantial. This special design keeps the rail pad remains in intimate contact with the rail despite any vertical movements of the latter.
When the wheel is over the pad, the latter's stiffness must prevent large movements, so as to prevent metal spring becoming loose. Such a load-deflection characteristic can be obtained by introducing grooves in the rubber rail pads. Rubber pad or grooved rubber rail pad are made up of rubber or plastic to dampen the shocks of vibrations of a passing train.
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.
