Dock Bumper Weatherproof Quick Setup Durable Rubber Corrosion Resistant
Description
Roller fenders are precision-engineered marine protection systems designed to safeguard vessels and dock structures from impact during berthing. They utilize a cylindrical rolling mechanism that rotates with the vessel’s motion, absorbing kinetic energy and distributing it evenly across the surface. This reduces lateral forces, minimizes friction, and prevents localized damage to both hulls and docks. Constructed with high-strength synthetic rubber and reinforced galvanized steel cores, roller fenders are engineered to resist extreme maritime environments including saltwater corrosion, UV exposure, and large temperature fluctuations.
The modular design allows individual rollers to be replaced without dismantling the entire system, minimizing maintenance downtime. Roller fenders are highly adaptable and can be customized in diameter, length, and mounting configuration to accommodate a wide range of vessel sizes and berth types, from small marina docks to large container terminals.
Case Study
In 2020 a major shipyard in South Korea faced challenges with berthing large bulk carriers and general cargo vessels. The vessels often experienced hull scratches and slight structural stress during docking, especially during high tidal conditions. Hongruntong Marine was selected to supply a roller fender system tailored for the shipyard’s berths.
The engineering team conducted a detailed survey including berth geometry, vessel size, berthing speed, and environmental factors such as tidal range and wind conditions. Based on this analysis, custom roller fenders with 1.0-meter diameter and high-elasticity rubber were fabricated. Reinforced steel cores were treated with anti-corrosion coating to ensure long-term durability. The installation included precise roller spacing and adaptable mounting to accommodate varying vessel types and tidal fluctuations.
After twelve months of operation the shipyard reported a 55% reduction in hull contact incidents and smoother docking operations. Tug assistance was reduced, improving operational efficiency and reducing fuel costs. The fenders maintained their structural integrity under heavy impact and extreme weather conditions including monsoon rains and strong winds. The shipyard operators praised the modular design which allowed quick replacement of worn rollers without stopping berthing operations. This project demonstrated the effectiveness of roller fenders in improving vessel safety and port efficiency in high-demand environments.
Specifications
| Product Name | Roller Fenders |
| Material | High Density NR/NBR/SBR |
| Temperature | from -30°C to 70°C |
| Specific Gravity | 1.45 g/cm3 |
| Intensity | 3 MPA |
| Hardness | 65 ± 5 Shore A |
| Elongation | ≥300% |
| Size | D1080-2900mm |
| Package | By Pallets, By carton, By Iron Cage |
| Color | Black, as Required |
| Certificate | CE, ROHS, REACH, SGS, MSDS, ISO9001 |
| Experience | 32 years |
| Market | North America, Asia, Europe, South America, Australia, Africa. |
| Payment | BANK TRANSFER, 30% T/T, Balance Before Shipment, L/C. |
| Model No. | A | B | C | D | E | G | H | J | K | L |
| Roller | [mm] | [mm] | [mm] | [mm] | [mm] | [mm] | [mm] | [mm] | [mm] | [mm] |
| HM-RF1080 | 1250 | 1150 | 610 | 1080 | 1150 | 220 | 460 | 800 | 340 | 60 |
| HM-RF1450 | 1530 | 1400 | 740 | 1320 | 1450 | 260 | 510 | 950 | 400 | 75 |
| HM-RF1500 | 1600 | 1450 | 765 | 1370 | 1500 | 270 | 610 | 1000 | 425 | 75 |
| HM-RF1900 | 2050 | 1850 | 975 | 1750 | 1900 | 350 | 690 | 1250 | 500 | 125 |
| HM-RF2100 | 2300 | 2100 | 1110 | 1980 | 2100 | 400 | 765 | 1400 | 550 | 150 |
| HM-RF2700 | 3000 | 2700 | 1425 | 2550 | 2700 | 500 | 895 | 1800 | 700 | 200 |
Features
High Impact Resistance
The roller fender’s rotating design effectively absorbs and disperses impact energy across the roller surface, preventing damage to both vessel hulls and dock structures. Laboratory testing confirms energy absorption exceeding 90% for large bulk carriers and cargo vessels.
Durable and Weather Resistant
Marine-grade rubber combined with anti-corrosion steel cores ensures reliable performance in UV exposure, saltwater, and temperature extremes. The materials maintain elasticity and structural integrity over extended periods of continuous operation.
Modular Low Maintenance System
Individual rollers can be replaced without disassembling the full fender system, minimizing downtime and maintenance costs. The rolling motion reduces friction and wear, prolonging service life and keeping operational disruption to a minimum.
Customizable for Various Vessel Types
Roller fender dimensions including diameter, length, and spacing can be customized to meet specific berth and vessel requirements. Mounting systems are adaptable for fixed piers, floating docks, and bridge piles, ensuring optimal protection for diverse maritime applications.
Applications
Bulk Carrier and Cargo Berths
Ideal for handling bulk carriers and general cargo vessels, providing reliable protection and reducing structural stress during docking.
Marina and Coastal Ports
Suitable for smaller vessels and high-frequency berthing operations where alignment and hull protection are critical.
Bridge Piers and Coastal Structures
Effective for absorbing lateral and vertical forces, protecting piers and bridges from repeated impacts while ensuring vessel alignment.
Why Choose Hongruntong Marine
Proven Global Experience
Hongruntong Marine has extensive experience delivering roller fender solutions across Asia, Europe, and the Americas. Projects include high-traffic shipyards, container terminals, and offshore oil facilities.
Engineering Expertise
Our in-house engineering team conducts comprehensive site analysis, simulations, and impact studies to design fenders tailored for specific vessel types, berthing speeds, and dock configurations.
Premium Quality Materials
We use high-strength marine-grade rubber and reinforced steel cores with anti-corrosion treatment to ensure long-lasting durability and superior performance under harsh marine conditions.
Comprehensive Support and Maintenance
Hongruntong Marine provides full installation guidance, maintenance training, and rapid replacement services, ensuring continuous operation and maximizing return on investment for clients.
FAQ
Q1: Are roller fenders suitable for bulk carriers and large cargo vessels
A Yes they are designed for a wide range of vessels. The system can be customized to accommodate large bulk carriers, container ships, and general cargo vessels with varying impact forces
Q2: How frequently should roller fenders be inspected
A Routine inspections every 6 to 12 months are recommended. Modular rollers can be individually replaced to minimize downtime while ensuring optimal energy absorption
Q3: Can roller fenders be installed on bridge piers and coastal structures
A Yes the mounting system is highly adaptable for fixed piers, floating docks, and bridge piles providing protection in diverse environments
Q4: Are the materials resistant to UV and saltwater corrosion
A Yes the marine-grade rubber and galvanized steel cores with anti-corrosion coating ensure long-term resistance to UV, saltwater, and temperature extremes
Q5: What is the expected lifespan of roller fenders
A With proper installation and regular maintenance, roller fenders typically last 15 to 25 years depending on environmental conditions and traffic load
![]()
![]()
![]()
![]()