GNEE RAILWAY RAILWAY Steel (Tianjin) Co., Ltd. is one of the most reliable manufacturers and suppliers of railway sleepers elastic pad in China, also supports customized service with low price. Please feel free to buy cheap railway sleepers elastic pad made in China here from our factory.
Railway Sleeper Elastic Pads (Under Sleeper Pads)
Under sleeper pads (USPs) are easy to install, maintenance free and compatible with all types of ballasted track design. Their use is proven to reduce the life-cycle cost of the railway: when USPs are installed, the stress within each sleeper is reduced by a more even distribution of axle load. GNEE RAILWAY RAILWAY supplies sleeper elastic pads in polyurethane-rubber composite materials, with customizable design parameters for specific project requirements.
Under Sleeper Pad (USP) Performance
- The contact area between the ballast and the sleeper is significantly increased, improving track homogeneity and stability.
- USPs are manufactured from high-performance polyurethane-rubber composite materials, allowing customizable design parameters to achieve optimal vibration attenuation while maintaining superior track quality.
- Suitable for all ballasted track applications; engineered to enhance track quality, improve load distribution and reduce vibration transmission.
Custom USP options available – specify material (polyurethane/rubber etc), size, or performance requirements. Contact our team!
Advantages of using Elastic Under-Sleeper Pads
Reducing maintenance
Installation of under sleeper pads can extend the interval between essential track maintenance operations (for example lining, leveling and tamping cycles) by a factor of at least two, reducing maintenance frequency and cost.
Cost saving
The thickness of the ballast layer can be reduced by up to 10 cm with the addition of USPs, because track stiffness is normalised by the elastic layer.
Functional and versatile
Including USPs within a transition between sub-structures offers a controlled difference in track stiffness and settlement, resulting in a much smoother transition between track forms.
Railway Sleepers Elastic Pad Specifications
| Parameter | Value |
|---|---|
| Elastomer thickness range | 7 – 20 mm |
| Micro-filament fastening (MFF) thickness | 0.7 mm |
| Density range | 710 – 1200 kg/m² |
| Geometry | Flat |
| Static bedding modulus range | 0.08 – 0.25 N/mm², tested to DIN 45673-6 |
| Dynamic bedding modulus range (10 Hz) | 0.08 – 0.32 N/mm², tested to DIN 45673-6 |
| Pull-out strength | > 0.5 MPa, tested to DIN 45673-6 |
Custom USP options are available - specify material (polyurethane, rubber or composite), size, stiffness or performance requirements, and our engineers will confirm the design before production.
Reference Sectors
- Conventional and heavy-haul ballasted lines.
- High-speed lines requiring consistent track stiffness.
- Urban metro and light rail vibration-sensitive sections.
- Transitions between track forms and structures.
Frequently Asked Questions
- What is an under sleeper pad (USP)?
A USP is an elastic pad fixed to the underside of the sleeper, increasing the sleeper-ballast contact area, distributing axle load more evenly and reducing vibration.
- What material are the pads made of?
High-performance polyurethane-rubber composite, with customizable density, stiffness and geometry per project.
- How much can USPs reduce maintenance?
USPs can extend the interval between essential track maintenance (e.g. tamping cycles) by a factor of at least two and can allow a thinner ballast layer; exact figures depend on track and traffic conditions.
- Which standard are the pads tested to?
Bedding modulus and pull-out values are verified per DIN 45673-6; confirm your project's required test standard with our engineers.
Request a Quotation
Send your sleeper type, pad thickness, stiffness requirement and quantity to our sales team or use the Inquiry form - we will confirm specifications, testing and delivery within 24 hours.
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