Cylindrical rubber fenders are one of the most cost-effective and widely used marine fendering solutions, designed to protect wharves, piers, and vessels during berthing operations. Featuring a hollow cylindrical profile, these fenders offer excellent energy absorption with moderate reaction force, making them ideal for barges, tugs, and workboats.Manufactured in compliance with PIANC guidelines and available in custom diameters and lengths, Ronsen cylindrical fenders provide reliable, low-
maintenance protection for ports, shipyards, and offshore installations worldwide.
Key Advantages of Cylindrical Rubber Fenders
- High Energy Absorption: The hollow design compresses effectively to dissipate impact energy, reducing stress on both the vessel and the dock structure.
- Low Maintenance: Solid rubber construction requires no inflation or pressure checks, unlike pneumatic fenders.
- Easy Installation: Can be mounted horizontally, vertically, or diagonally using chains, steel bars, or brackets.
- Durability: Excellent resistance to abrasion, UV radiation, ozone, and harsh marine environments.
- Versatility: Suitable for a wide range of applications, from small marinas to heavy industrial ports.
- PIANC Compliance: Engineered to meet international standards for marine fendering performance.
Technical Specifications
| Parameter | Specification |
|---|---|
| Diameter Range | Ø100 mm – Ø2000 mm (Custom sizes available) |
| Standard Length | Up to 6000 mm (Custom lengths available) |
| Rubber Material | Natural Rubber (NR), SBR, EPDM Blends |
| Hardness | 65 ± 5 Shore A |
| Tensile Strength | ≥ 16 MPa |
| Elongation at Break | ≥ 450% |
| Service Temperature | -40°C to +70°C |
| Mounting System | Chain Bearing / Steel Bar Bearing |
| Compliance | PIANC Guidelines |
Installation Methods
Cylindrical fenders offer flexible installation options to suit different structural requirements:
Chain Bearing Installation
Chains pass through the central hole, securing the fender to the dock. This method allows the fender to move slightly with tidal changes and vessel motion, ideal for tidal zones.
Steel Bar Bearing Installation
Steel bars or bolts fix the fender rigidly to the wharf structure. This provides high shear resistance and is perfect for permanent, heavy-duty applications where minimal movement is desired.
Typical Applications
Thanks to their robust design and ease of installation, cylindrical rubber fenders are widely used in:
- Port Infrastructure: General cargo berths, bulk terminals, and container wharves.
- Inland Waterways: Locks, dams, and canal walls.
- Vessels: Bow, side, and stern protection for tugs, ferries, and workboats.
- Renovation Projects: Upgrading old quay walls with minimal civil works.
- Offshore: Walkways, gangways, and platform interfaces.
Cylindrical Fender vs. Other Fender Types
Choosing the right fender depends on your specific berthing requirements. Here is a quick comparison:
| Feature | Cylindrical Fender | Pneumatic (Yokohama) Fender | Foam Filled Fender |
|---|---|---|---|
| Maintenance | Minimal | Regular pressure checks | Minimal |
| Floating Ability | No (Fixed mount) | Yes | Yes |
| Reaction Force | Moderate | Very Low | Moderate to High |
| Installation Cost | Low | Medium | Medium |
| Best For | Fixed docks, barges | STS, large tankers | Navy, offshore |
Why Choose Ronsen Marine?
- Certified Quality: Our manufacturing process adheres to PIANC standards, ensuring reliable performance.
- Rigorous Testing: Every batch undergoes tensile strength, hardness, and aging resistance tests.
- Custom Engineering: We provide tailored solutions, including pre-drilled holes, curved sections, and specific rubber compounds.
- Global Experience: Trusted by clients in Asia, the Middle East, Europe, and the Americas.
- Full Documentation: We supply Mill Test Certificates, Inspection Reports, and Compliance Certificates.
Frequently Asked Questions (FAQ)
What is the standard size of a cylindrical rubber fender?
Standard diameters range from 100 mm to 2000 mm, with lengths up to 6000 mm. We specialize in custom sizes to fit unique berthing structures.
Are cylindrical fenders suitable for areas with large tidal ranges?
Yes, when installed using the chain bearing method, the fender can move vertically with the tide, maintaining constant protection.
How long do cylindrical rubber fenders last?
Under normal marine conditions, our high-quality rubber fenders have a service life of 10 to 15 years.
Do you provide PIANC certification?
Yes, we provide full documentation stating compliance with PIANC guidelines, along with factory inspection reports.
Can I get a custom shape or curvature?
Absolutely. We can manufacture curved cylindrical fenders to match the radius of dolphins or curved quay walls.
Request a Quotation or Technical Drawing
Our marine engineering team is ready to assist you with sizing calculations, material selection, and competitive pricing. Contact us today to discuss your project requirements.
📞 Phone / WhatsApp: [+86 183 5328 0885]