What are the standards for rail elastic pads?
Rail elastic pad standards focus on material quality (virgin rubber/polymers), performance (load, deflection, fatigue, aging), dimensions, and appearance, governed by specific specs like India's IRS-T-55 or SNCF/DB norms, ensuring they handle repeated stress, vibration, and environmental factors for track safety, with variations for heavy vs. city rail and hot/cold climates.
Common Standards & References
- IRS-T-55-2023: Indian Railway Standard for Rail Pads.
- SNCF IG04045 & DB 918 235: French & German railway standards for load deflection.
- GB/T 21527-2008: Chinese National Standard for rail pads.
What is the function of a railway pad?
A railway pad's main function is to absorb shock and vibrations from passing trains, protecting the track structure (sleepers and ballast) from wear, fatigue, and damage while reducing noise and improving passenger comfort by cushioning impacts and distributing wheel loads over a wider area. These elastic pads, placed between the rail and sleeper, enhance track stability, provide electrical insulation, and extend the lifespan of the entire rail system.
How thick is a rail elastic pad?
Rail elastic pad thickness varies significantly by application, typically ranging from 4.5 mm to 20 mm or more, with common thicknesses like 6mm, 7mm, 8-12mm for high-speed, and 12-20mm for heavy freight, providing cushioning, vibration dampening, and wear protection between rail and sleeper, depending on load and track type.
- Load & Vibration: Thicker pads offer better load distribution and vibration absorption (shake control) for heavy traffic.
- Track Type: Concrete sleepers often use specific pad thicknesses (like 4.5mm) for elasticity.
- Material: Different materials (rubber, EVA, plastic) and designs (e.g., cord-reinforced) have varying standard thicknesses.
| 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. |
As a professional rail fastener manufacturer, GNEE RAIL can produce various types of rubber rail pads with different materials, such as natural rubber, EVA, HDPE and so on. In railway fastening system, rubber rail pads are often installed between the rail tracks and the concrete railway sleepers.