Aohong is a professional manufacturer of Laminated Rubber Bearings, offering high-quality Rubber Bearings designed for reliable performance in bridges, buildings, and structural applications. These bearings consist of multiple layers of natural or neoprene rubber reinforced with steel plates, bonded through vulcanization, providing excellent vertical stiffness to transfer loads and outstanding horizontal flexibility to absorb displacement and rotation. Rubber Bearings effectively reduce vibration and dynamic load impact, improving structural stability and service life. With strong corrosion resistance, high durability, and minimal maintenance, they are widely used in highway bridges, railway bridges, precast concrete slabs, steel structures, and stadium constructions.
Material Composition
- Rubber Options: Natural rubber (NR) or Chloroprene rubber (CR)
- Steel Reinforcement: High-strength steel plates embedded between rubber layers
- Optional Sliding Surface: PTFE (Teflon) plate for sliding laminated bearings
- Durability: Designed to resist aging, corrosion, and extreme weather conditions
| Material | IRHD | Hardness | Tensile Strength | Elongation at Break | Compression Set |
| Shore A | min. psi | min. | max. | ||
| Nature rubber | 50 | 45-55 | 2500 | 450% | 25% |
| 60 | 55-65 | 2500 | 400% | 25% | |
| 70 | 65-75 | 2500 | 350% | 25% | |
| Neoprene | 50 | 45-55 | 2250 | 400% | 35% |
| 60 | 55-65 | 2250 | 350% | 5% | |
| 70 | 65-75 | 2250 | 300% | 5% |
Common Sizes and Dimensions
- Length: 200 mm – 1500 mm
- Width: 200 mm – 1000 mm
- Thickness: 22 mm – 150 mm
- Shape Options: Rectangular, Square, and Circular bearings
- Examples:
- 300 × 450 × 50 mm
- 500 × 500 × 96 mm
- 630 × 320 × 90 mm
- 550 × 550 × 100 mm
Mechanical Properties
- Hardness (IRHD): 45 – 75 (depending on material grade)
- Tensile Strength: ≥ 17 MPa (NR), ≥ 15 MPa (CR)
- Elongation at Break: 300% – 450%
- Compression Set: ≤ 25% (NR), ≤ 5% (CR)
- Temperature Range:
- Chloroprene Rubber Bearings: -25 °C to +60 °C
- Natural Rubber Bearings: -40 °C to +60 °C
Features of Rubber Bearings
- High vertical load capacity (5 – 2000 tons)
- Excellent vibration isolation and shock absorption
- Maintenance-free and long service life
- Cost-effective seismic isolation for bridges and buildings
- Easy to install without additional dampers or complex supports
Applications of Laminated Rubber Bearings
- Bridge Structures: Highway bridges, railway bridges, curved and skew bridges
- Buildings: Multi-story stadiums, industrial buildings, and seismic isolation systems
- Structural Components: Precast concrete slabs, steel structures, and vibration-sensitive equipment foundations
