What Are The Characteristics Of The Rail Pads Offered By GNEE RAIL?

The rail pad, also known as bottom plate, is an elastic polyurethane pad assembled between the rails and sleeper to protect the top of the sleeper from wear and impact. The initial stiffness of the rail pad is not so high that the deformation of the rails under the load of the spring is very large. This mechanism ensures that the rail pad moves as close as possible to realize close contact with the track.

 

GNEE RAIL equips 130sets machines' rail pad production line, for processing, injection, refining rubber, sulfuration , moulding and inspection etc. We have our own rail pad development engineers, designing, producing and inspecting, our annual production capacity reaching up to 2000, 000 pieces.

 

 

The characteristics of the railway pad from GNEE RAIL?

 

• Vibration & Shock Absorption: They cushion the impact from passing trains, reducing stress on the track structure and lowering noise.

 

• Load Distribution: They spread the heavy load from the rail over a wider area of the sleeper, preventing damage.

 

• Durability & Resistance: Excellent resistance to aging, weathering, abrasion, and extreme temperatures (hot/cold) ensures a long service life.

 

• Elasticity: High elasticity allows them to absorb energy and return to their shape, crucial for maintaining track geometry.

 

• Electrical Insulation: They provide insulation, preventing electrical currents from passing through the track system.

 

• Material Versatility: Made from materials like natural rubber, EPDM, polyurethane (PU), HDPE, or EVA, chosen for specific performance needs.

 

We have developed a range of high-performance elastic rail pads for stiffness requirements and various application areas-from trams through standard gauge railways to heavy haul lines, especially those for E-type rail fastening systems and SKL type rail fastening systems with material of HDPE/EVA/Rubber, with following properties respectively.

 

 

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

 

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)

 

The rail pad laid under the rail is used to guarantee:

 

• The load distribution covering a larger surface area

 

• Reducing load concentration and usage fatigue stress

 

• Even contact area between the rail and supporting components

 

• Reducing noise and structural vibrations

 

• Sealing function between the top support and rail bottom

 

• Reducing rail wearing and relevant supporting components

 

Rubber rail pads for concrete sleepers

 

 

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.

 

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.

 

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