BV Certified Pneumatic Type Yokohama Rubber Fenders
Product Introduction
Yokohama rubber fenders are used world wide for ship-to-ship (STS) transfer operations, terminals, and for all kinds of ships. Since its creation until today, more than millions of fenders have been supplied worldwide both for ship-to-ship and ship-to-dock (STD) operations serving our valuable customers. These fenders play a critical role in the safe operation of ship berthing and mooring.
The Advantages of the Yokohama Rubber Fenders:
1. Guaranteed energy absorption
2. Thick skin construction
3. Good angular performance
4. Less surface pressure onto the side wall of ships. (The capability of accepting surface pressure of the fender is up to 14 ton/m2).
5. No reduction on the performance of compression when inclined.
6. Especially in mooring of large scale ships in sea docks and lightering.
Our Advantages
1 Safety and Reliability
Shunhang Pneumatic Rubber Fenders are constructed of natural rubber, several layers of strong tire-cord, and are thus resistant to pressure and cutting. The safety factor adopted in the design of this fender is based on accepted theory and has been proven by extensive experimentation.
2 Patented Active Protecting Safety Valve Design
All Shunhang Pneumatic Rubber Fenders are equipped with a safety valve to release the inside air in the event of accidental over-pressure.
3 No Deterioration or Variation in Performance
Shunahng Pneumatic Rubber Fenders utilize the compressive elasticity of air, therefore performance deterioration due to fatigue is absent.
Yokohama rubber fender types are defined as follows:
1. Type I — Net-type;
2. Type I Single — Net-type and one end with no flange opening and no metal parts.
3. Type II — Sling-type.
Type requirements:
1. Type I and Type I Single (Net-type) fenders shall be covered by a chain net, wire net, or fibre net. Each end of longitudinal chains, wires, or fibres shall be linked together with one or two ring(s), which shall be connected with a guy-chain or guy-rope. Usually, these nets will be fitted with used tyres or rubber sleeves to provide additional protection to the fender body.
2. Type II (Sling-type) fenders shall have a lifting device on each end, which shall be connected with a guy-chain or guy-rope.
Specificaton of Yokohama Rubber Fender
| Size | Initial Internal Pressure 50kPa | Initial Internal Pressure 50kPa |
| Diameter/ Meter | Length /Meter | Energy Absorption /KJ | Reaction Force /KN | Energy Absorption /KJ | Reaction Force /KN |
| 0.5 | 1 | 6 | 64 | 8 | 85 |
| 0.7 | 1.5 | 17 | 137 | 24 | 180 |
| 1.0 | 1.5 | 32 | 182 | 45 | 239 |
| 1.0 | 2.0 | 45 | 257 | 63 | 338 |
| 1.2 | 2.0 | 63 | 297 | 88 | 390 |
| 1.5 | 3.0 | 153 | 579 | 214 | 761 |
| 1.7 | 3.0 | 191 | 639 | 267 | 840 |
| 2.0 | 3.5 | 308 | 875 | 430 | 1150 |
| 2.5 | 4.0 | 663 | 1381 | 925 | 1815 |
| 2.5 | 5.5 | 943 | 2019 | 1317 | 2653 |
| 3.0 | 5.0 | 1050 | 2000 | 1571 | 2709 |
| 3.0 | 6.0 | 1312 | 2488 | 1888 | 3292 |
| 3.3 | 4.5 | 1175 | 1884 | 1640 | 2476 |
| 3.3 | 6.0 | 1675 | 2783 | 2338 | 3652 |
| 3.3 | 6.5 | 1814 | 3015 | 2532 | 3961 |
Outer and Inner Rubber Material Requirements of Yokohama Rubber Fenders
| Test item | Test method | Required value |
| Outer rubber | Inner rubber |
| 1. Before aging | – | – | – |
| 1.1 Tensile strength | ISO 37:2011 | 18 MPa or more | 10 MPa or more |
| 1.2 Elongation | ISO 37:2011 | 400 % or more | 400 % or more |
| 1.3 Hardness | ISO 7619-1:2010 | 60 ± 10 (Durometer hardness Type A) | 50 ± 10 (Durometer hardness Type A) |
| 2. After aging | ISO 188:2011 | Air oven aging, 70°C ± 1°C, 96 h | Air oven aging, 70°C ± 1°C, 96 h |
| 2.1 Tensile strength | ISO 37:2011 | Not less than 80 % of the original property | Not less than 80 % of the origi- nal property |
| 2.2 Elongation | ISO 37:2011 | Not less than 80 % of the original property | Not less than 80 % of the origi- nal property |
| 2.3 Hardness | ISO 7619-1:2010 | Not to exceed the original prop- erty by more than 8 | Not to exceed the original prop- erty by more than 8 |
| 3. Tear | ISO 34-1:2010 | 400 N/cm or more | No requirement |
| 4. Compression set | ISO 815-1:2008 | 30 %(70 ± 1 °C, 22hours) or less | No requirement |
| 5. Static ozone aging test | ISO 1431-1:2012 | No cracks after elongation by 20 % and exposure to 50 pphma at 40 °C for 96 h | No requirement |
| NOTE If the colour of the outer cover is not black, the material requirements will differ from those in this table. a Parts of ozone per hundred million of air by volume. |
Fender Compression
Application of Yokohama Rubber Fenders
Our Certificates
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