Yokohama Hydro Pneumatic Fender For Submarine Natural Rubber Ship Fenders
Yokohama Hydro Pneumatic Fender
Yokohama hydro pneumatic fenders are widely used for semi-submersible platforms, and drilling rigs for a long time. They are preferably used in ports where the tides vary greatly. This Yokohama hydro pneumatic fender is filled with water and air inside to make it vertically installed against submerged hulls with a counterweight. It’s always regarded as a buffer to reduce shock in between due to its excellent performance of great elasticity and abrasion-resistance.
Yokohama hydro pneumatic fenders are made of natural rubber and tire cord reinforcement in the shape of cylindrical, which is strong enough to withstand external forces and severe weather conditions.
Yokohama Hydro Pneumatic Fender Advantage
1. Strong Enough against Shear Force
Yokohama hydro pneumatic fender is made of reinforced-tire-cord layers which enable it to make it cope against the shear forces and compression forces.
2. Tide Adaptation
Yokohama hydro pneumatic fender is filled with pressure air inside that makes it flexible and easy to float on the water and adapt to the tide variation.
3. Easy to Install or Replace
Floating on the water makes Yokohama hydro pneumatic fender easy to moored by means of guy rope or chain. When the fender is not in use, it can be transferred easily after releasing the air inside.
Yokohama Hydro Pneumatic Fender Structure
① Outer rubber layer
Yokohama hydro pneumatic fenders are covered by the outer layer made of natural rubber. This rubber compound is strong enough to protect the inner layer and synthetic-cord layer from the damage of external forces and severe weather conditions.
② Synthetic-tire-cord layer
The Synthetic-tire-cord layer is made of synthetic-tire-cord fabrics, compared with synthetic canvas fabric and synthetic belt fabric, this reinforcement layer performs better in fatigue-resistance and pressure-holding.
③ Inner rubber layer
The inner rubber layer is designed to seal the air inside the fender.
Yokohama Hydro Pneumatic Fender Specification Table
| fender size (mm) | without water 60% deflection | filled with water 45% deflection |
| energy (knm) | reaction (kn) | ratio water/air (%) | energy (knm) | reaction (kn) |
| 1700×7,200 | 560 | 1,810 | 65/35 | 134 | 611 |
| 2,000×6,000 | 647 | 1,766 | 65/35 | 155 | 599 |
| 2,500×5,500 | 928 | 2,037 | 65/35 | 223 | 687 |
| 3,300×6,500 | 1,913 | 3,169 | 60/40 | 616 | 1,247 |
| 3,300×10,600 | 3,120 | 5,170 | 55/45 | 589 | 1,275 |
| standard tolerance of ±10% | | | | |
For further information free to contact us.
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