What types of Railway Pads are there?

 

Rail pads can be categorized by their material (e.g., natural and synthetic rubber, EVA, composite) and geometry (e.g., grooved, studded). The type of pad used is determined by the specific application and requirements, such as the type of rail, expected load, and the need for vibration and impact absorption.

 

 

By material

 

• Natural Rubber: Offers high resilience and durability, suitable for high-speed applications.

 

• Synthetic Rubber: Provides superior resistance to environmental factors like weathering.

 

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

 

• EVA: A common and versatile material for rail pads.

 

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)

 

• Composite: Made from advanced materials like fiberglass or polyurethane, these pads are strong yet lightweight.

 

• Other Elastomers: Including EPDM (Ethylene Propylene Diene Monomer) and TPE (Thermoplastic Elastomer).

 

By geometry

 

• Grooved Rail Pads: Positioned between the rail and sleeper to help with impact attenuation and vibration reduction.

 

 

Specifications of Grooved Rubber Rail Pads
Drg No	6mm GRSP-RDSO-RT-3073,RT-3711,RT-4107,RT-4218 60kg Rials 1 in to 12,RT-4865 60kg Rials 1 in 8.5,RT- 198-6203 and RT-6204 etc..
Standard	RDSO
Shape	rectangular
Application	Industrial
Hardness	75~85 shores A
Material	Rubber
Minimum Order Quantity	2500 Piece

 

• Studded Rail Pads: Engineered for demanding environments, often made from natural and synthetic elastomers.

 

 

• Continuous vs. Discrete: A distinction is made between pads designed for continuously supported rails versus those for discontinuous mounting, such as those used in a continuous rail fastening system or an E-type fastening system.

 

• Ribbed Designs: Another variation in geometry to suit specific needs.

 

Importance of Rubber Pads in Railway Tracks

 

• Enhancing Track Stability

 

These pads are strategically placed between the rail and the sleeper, acting as a buffer that evenly distributes the load. This way, they can reduce the pressure on rail tracks, at the same time mitigate deformation, therefore extend the average lifespan of railway infrastructure. Rubber pad brings greater stability to the game, they greatly improves the safety and stability of railway transport, hence the lower rate of railroad incidents.

 

 

• Noise Reduction

 

An often overlooked yet vital function of rubber pads in railway tracks is their ability to reduce noise. Rubber pads can dampen the vibration generated by the passing train and help supress the noises. this can not only make the journey better for the passengers, but also can it reduce white noise pollution, and make the surrounding neighbourhood better to live in.

 

 

• Vibration Damping

 

Another critical benefit of rubber pads is their capability to dampen vibrations. Railway operations are inherently dynamic, with trains exerting significant vibrational forces on the tracks. As time goes by, the constant vibration will cause the degradation of the rail track. Rubber pad can reduce vibration, lower the vibration that have been passed on the rail track struction. The mitigation of vibration can reduce wear and tear to the minimum, thus the extended lifespan of both the tracks and the rolling stock, and make sure the smooth running of the train.

 

GNEE RAIL 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. What's more, rail pads for high speed rail lines are our featured products, including both the elastic rubber plates and height adjustment pads.

 

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