PTFE Sliding Bearing pad Manufacturer
Unmatched in elastomeric bridge bearings, we’ve played a key role in over a thousand global projects. Trust SHUANGLIN for reliability, precision, and proven excellence!
Sliding Bearing
Sliding bearing consist of two steel plates with a low-friction interface layer, typically PTFE, sandwiched in between. This allows relative sliding motion to accommodate large horizontal displacements. Their simple design effectively isolates structures from seismic loads. Sliding bearings can be used independently or integrated into other bearing systems for bridges with small to medium spans.
Structure of Rubber Bearing Pads
Production of Our Bearings According to International and Chinese Standards:
ASTM D4014/D4014M. EN 1337-3:2005. ISO 22762-1:2015. GB∕T 20688.4
ASTM D4014/D4014M. EN 1337-3:2005. ISO 22762-1:2015. GB∕T 20688.4
1. PTFE Sliding Layer
- Material: Polytetrafluoroethylene (PTFE)
- Function: Provides a low-friction surface, allowing smooth horizontal movement.
- Standards: ASTM D4894/D4895, EN 1337-2
- Material: High-strength steel
- Function: Supports the PTFE layer, distributes and transmits loads.
- Standards: EN 10025, ASTM A36, ISO 630
- Material: High-quality synthetic or natural rubber
- Function: Offers vertical flexibility and cushioning, adapting to minor displacements and reducing vibrations.
Technical Specifications
- Material: High-strength steel, rubber and PTFE sliding surfaces.
- Horizontal Displacement: Up to ±300mm.
- Vertical Load Capacity: 500kN to 5000kN.
- Operating Temperature: -40℃ to +60℃.
- Lifespan: Over 50 years.
- Rotation: 0.01rad max
# Mechanical properties of the bearing
| Item | Index | |
|---|---|---|
| Ultimate compressive strength Ru (MPa) | ≥70 | |
| Measured compressive elastic modulus E1 (MPa) | E±Ex20% | |
| Measured shear elastic modulus G1 (MPa) | G±Gx15% | |
| Measured shear elastic modulus after aging G2 (MPa) | G1±G1x15% | |
| Measured tangent value of rotation angle tanθ | Concrete Bridge | ≥1/300 |
| Steel Bridge | ≥1/500 | |
| The measured friction coefficient uf on the surface of PTFE plate and stainless steel (when using silicone grease) | ≤0.03 | |
E – Bearing compressive elastic modulus
G – Bearing shear elastic modulus
S – Bearing form factor
Feature
- Durability: Made with premium materials to withstand extreme conditions and ensure long-term performance.
- High Load Capacity: Engineered to support heavy loads and accommodate large displacements.
- Low Maintenance: Designed for minimal maintenance, reducing overall lifecycle costs.
- Compliance: Our sliding bearings meet international standards, including ISO and EN certifications.
Application
- Public Infrastructure: Bridges, overpasses, and viaducts.
- Railway Bridges: Ensuring smooth and safe railway operations.
- Highway Bridges: Enhancing the longevity and stability of highway structures.
After-Sales Service
At SHUANGLIN, we are committed to providing exceptional after-sales service. Our dedicated support team is available to assist with any questions or issues you may have, ensuring your complete satisfaction with our products. We offer comprehensive maintenance advice, troubleshooting assistance, and timely replacements or repairs if necessary.
FAQ
What is the expected lifespan of your sliding bearings under normal operating conditions?
Under normal conditions and with proper maintenance, our sliding bearings have a service life that can exceed 50 years.
How do your sliding bearings perform under heavy dynamic loads?
Our bearings are engineered with a focus on fatigue life under dynamic loads. The rubber compound and steel reinforcement layers are optimized to provide durability and resilience under heavy loads.
How do you test and validate the performance of your bearings?
We conduct a range of tests, including compression, shear, and fatigue tests, to validate the performance of our bearings. We also perform finite element analysis (FEA) and other simulations to ensure that our bearings meet the required specifications.
Can you provide bearings that meet specific seismic design requirements?
Yes, we offer bearings that are designed to meet specific seismic design requirements, including those specified in AASHTO, EN, and other international standards.
How can we get a quote for sliding bearings for our bridge project?
Please provide us with the details of your project, including the number of bearings required, the dimensions, and any specific design requirements, and we will provide a detailed quote.
Can you provide technical support and guidance during the installation phase?
Absolutely, our team of engineers is available to provide technical advice and, if necessary, on-site support to ensure proper installation and alignment of the bearings.
What is your lead time for manufacturing and delivering sliding bearings?
Our standard lead time is approximately 4-6 weeks from the order confirmation. For urgent needs, we may be able to expedite production subject to availability.
Do you provide any documentation or certificates with the shipment?
We provide a certificate of original, test reports, and detailed installation instructions with each shipment.
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