How do Rail Pads and sleepers work together?

 

Rail pads work with sleepers by providing an elastic layer between the steel rail and the concrete sleeper, which distributes the train's weight, dampens shock and vibration, and prevents wear and tear on both components. By absorbing impacts and reducing vibration, the pads protect the sleeper from crushing and cracking and allow for better contact with the ballast, leading to a more stable and longer-lasting track.

 

 

How rail pads and sleepers work together?

 

• Impact absorption and shock dampening: As a train passes, the rail pad absorbs the shock from the wheels. This elasticity allows the rail to deflect slightly without damaging the sleeper.

 

• Vibration and noise reduction: The pads minimize resonant vibrations from the sleepers and other track components, which reduces noise pollution and creates a smoother ride for passengers.

 

• Load distribution: The pads spread the load from the wheels over a larger surface area on the sleeper, which reduces stress and prevents the concentration of force that can lead to cracking.

 

 

• Protection from wear: The pads act as a protective barrier between the steel rail and the concrete sleeper, preventing the rail foot from abrading and crushing the top of the sleeper.

 

• Improved stability: By reducing movement and vibration, rail pads help keep the rails in proper alignment and prevent the sleepers from shifting, which contributes to overall track stability.

 

• Increased lifespan of components: By reducing damage and wear, rail pads help the rails, sleepers, and ballast last longer, which ultimately reduces maintenance costs and the frequency of repairs.

 

Importance of High-Quality Materials in GNEE Products

 

The choice of materials is crucial to the successful performance of rail pads. GNEE primarily uses resilient polyurethane and high-grade rubber compounds that provide enhanced elastic properties and longevity. These materials exhibit excellent resistance to wear, tear, and environmental stressors such as temperature fluctuations and moisture exposure, which is critical for maintaining the integrity of railway systems. Furthermore, GNEE's commitment to sourcing high-quality components ensures optimal adhesion between layers, reducing the risk of delamination or premature failure, which could compromise safety. By utilizing superior materials, GNEE products contribute not only to the longevity of rail pads but also in maximizing overall rail system efficacy.

 

 

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)

 

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)

 

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 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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