rail pad in concrete railway sleeper
A rail pad in a concrete sleeper system is an essential elastic layer (often rubber or plastic) placed between the steel rail and the concrete sleeper/baseplate to absorb shock, reduce vibration, distribute load, prevent wear/damage to the sleeper, and provide electrical insulation, improving track life and passenger comfort. They act as a cushion, accommodating rail movement and protecting the concrete from impact, especially crucial for high-speed lines.
| Material: | rubber |
| Standard: | TB/T2626-95 |
| Application: | 43kg/m ,50kg/m, 60kg/m, 75kg/m rail |
| Models: | 43-7-7, 43-10-7, 50-7-9, 50-10-9, 60-10-17, 60-12-17 |
| Operation temperature: | -50~70 degrees |
| Certificate: | ISO9001:2008 |
| Notes: | Should be stored in clean, ventilated place. Don't put under direct sunlight, and keep away from heat sources and chemical reagents. Don't touch oil, organic solvent and other chemicals. |
Key Functions of Railroad Pad
- Shock & Vibration Dampening: Reduces high-frequency impacts and vibrations from passing trains, enhancing comfort and protecting the track structure.
- Wear & Fatigue Prevention: Prevents abrasion and crushing of the concrete sleeper and rail base by load concentration.
- Load Distribution: Spreads the load from the rail over a larger area of the sleeper.
- Electrical Insulation: Isolates the rail from the sleeper, preventing short circuits in signaling systems.
- Sealing: Helps seal the interface, preventing moisture and debris ingress.
Installation of Railroad Pad
- Installed directly between the steel rail foot (or a baseplate) and the top of the concrete sleeper.
- Secured by fastening elements like clips, spikes, or bolts that go through the baseplate into the sleeper.
As a professional rail fastener manufacturer, GNEE RAILWAY RAILWAY 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.
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.
| 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) |
| 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) |
| 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 |
GNEE RAILWAY RAILWAY is equipped with rail pad production lines for 130sets of machines, for the whole process of injection, refining rubber, sulfuration, moulding and inspection, etc. We own the most engineers for rail pad development, design, production and inspection, with annual production capacity reaching up to 2000, 000 pieces.