Easy Installation Marine Yokohama Type Pneumatic Floating Natural
Rubber Fender
Pneumatic rubber fenders have a long and successful history of
protecting vessels in mooring operations. They are ideal for
permanent and semi-permanent port applications and for offshore
ship-to-ship transfers. Tough and resilient, rubber dock fenders
are fast and easy to deploy, maintaining large clearances between
the hull and the jetty or other vessel.
This serves to minimise damage potential during mooring. Critical
properties of rubber fenders are energy absorption, hull pressure
and reaction force. In both cases, Xincheng Marine Systems products score very highly,
with low reaction force and low hull pressure.This means the fender
absorbs significant energy, reducing the forces on both the vessel
hull and jetty structures.
Construction of pneumatic fender
Pneumatic Fenders are constructed of three vulcanized layers each
providing an important function in the construction and lifespan of
the fender. The three layers are
(1) the inner rubber layer
The inner rubber seals pressurised air inside the fender. It is
usually constructed of a compound similar to that of an inner tube
in a truck or car tyre to ensure a good level of air tightness.
(2) the tyre-cord layers of reinforcement
Synthetic tyre-cord layers have proven to be the best option for
strong, efficient reinforcement for pneumatic rubber fenders. Each
layer is coated with a rubber compound on both sides that prevents
contact between the layers, reducing friction and wear during
bending, compression and stretching. The same compound isolates
each thread within the layer.This greatly improves the ability of
the fender to hold pressure, fatigue resistance and endurance life.
Other reinforcing layer materials such as canvas have wear points
that significantly reduce the life off the fender.
(3) the outer rubber layer.
The tough abrasion resistant outer rubber is designed to protect
the inner rubber and tyre-cord layers from damaging external
forces. The material has mechanical properties to withstand the
arduous operational conditions for which it is designed.
How to choose the right size fender
A船舶(DWT) A vessel(DWT) | B船舶(DWT) B vessel(DWT) | 假定接舷速度(m/s) ASSumed speed Access side(m/s) | 有效运动能量(kJ) Effectirve kinetic energy
| 护舷尺寸(D*L) Fender Dimension (D*L) |
| 300,000 | 200,000 | 0.15 | 1230 | 3.3*6.5 |
| 150,000 | 0.15 | 1030 | 3.3*6.5 |
| 100,000 | 0.15 | 781 | 3.3*6.5 |
| 200,000 | 150,000 | 0.15 | 882 | 3.3*6.5 |
| 100,000 | 0.15 | 693 | 3.3*6.0 |
| 85,000 | 0.15 | 618 | 3.0*5.0 |
| 100,000 | 85,000 | 0.17 | 617 | 3.0*5.0 |
| 50,000 | 0.18 | 511 | 3.0*5.0 |
| 40,000 | 0.20 | 544 | 3.0*5.0 |
| 50,000 | 40,000 | 0.20 | 425 | 2.5*5.5 |
| 30,000 | 0.22 | 437 | 2.5*5.5 |
| 20,000 | 0.25 | 443 | 2.5*5.5 |
| 20,000 | 15,000 | 0.27 | 318 | 2.5*4.0 |
| 10,000 | 0.30 | 309 | 2.2*3.5 |
| 5,000 | 0.35 | 253 | 2.0*3.5 |
| 10,000 | 5,000 | 0.35 | 212 | 2.0*3.5 |
| 3,000 | 0.40 | 196 | 2.0*3.5 |
| 1,000 | 0.50 | 137 | 2.0*3.0 |
Accessories and After-sales
- We can provide 2 years free-maintenance for free.
- We provide 1 set repair kit and materials for free.
- Each pneumatic fender we provide inflatable tube with all
inflatable accessories.
- As long as it is the product quality problems even more than two
years we can repair for free.
Performace table for P50 & P80 Pneumatic Fenders
Nominal size
mm | Pneumatic 50
Guaranteed energy absorption (KN.M) | Pneumatic 50
Reaction force at GEA deflection (KN) | Pneumatic 50
Hull pressure at GEA deflection (KN) | Pneumatic 80
Guaranteed energy absorption (KN.M) | Pneumatic 80
Reactionforce at GEA deflection (KN) | Pneumatic 80
Hull pressureat GEA deflection (KN) |
| Dia x Length | 60% deflection | Tolerance ±10% | | 60% deflection | Tolerance ±10% | |
| 500×1000 | 6 | 64 | 132 | 8 | 85 | 174 |
| 600×1000 | 8 | 74 | 126 | 11 | 98 | 166 |
| 700×1500 | 17 | 137 | 135 | 24 | 180 | 177 |
| 1000×1500 | 32 | 182 | 122 | 45 | 239 | 160 |
| 1000×2000 | 45 | 257 | 132 | 63 | 338 | 174 |
| 1200×2000 | 63 | 297 | 126 | 88 | 390 | 166 |
| 1350×2500 | 102 | 427 | 130 | 142 | 561 | 170 |
| 1500×3000 | 153 | 579 | 132 | 214 | 761 | 174 |
| 1700×3000 | 191 | 639 | 128 | 267 | 840 | 168 |
| 2000×3500 | 308 | 875 | 128 | 430 | 1150 | 168 |
| 2500×5000 | 663 | 1381 | 137 | 925 | 1815 | 180 |
| 2500×5500 | 943 | 2019 | 148 | 1317 | 2653 | 195 |
| 3300×4500 | 1175 | 1884 | 130 | 1640 | 2476 | 171 |
| 3300×6500 | 1814 | 3015 | 146 | 2532 | 3961 | 191 |
ADVANTAGES
1), safe for excess load marine depend on the ball
The reaction force of a floating pneumatic fender does not increase
sharply even under excess load. Therefore, these fenders perform
extremely well under such condation and as a result, protect ships
and mooring facilities.
2), No deterration or variation in performance
Because pneumatic fenders utilise the compressive elasticity of
air, performance deteriation due to fatigue is completely absent.
The performance of these fenders remain unchanged at extremely low
temperatures, even below - 50'C.
3), safety realiability
Xincheng pneumatic rubber fender are constructed using several
layers of strong tyre cord are therefore extremely resistant to
pressure and cutting, and are therefore extremely resistant to
pressure and cutting. The larger size ( 2.5m dia upward ) are
fitted with safety valve to prevent accident in the event of over
copressiom.
4), construction
The fender body is constructed of an inner rubber layer,
reinforcing cord layers and an outer rubber layer. All three layers
are bonded together by a combination of heat and pressure over a
period of time in a vulcanising oven. Once completed, the fenders
are pressure tested before relase.
To provide maximum strength and safety, the out skin of submarine
fender is thicker than a normal surface fender.
The outer skin rubber compound is desinged and manufactured to be
able to withstand both strenuous use and adverse weather.
Condations whilst protecting the cord layers and inner rubber the
cord layers are corranged at optimum angles designed to be
completely airtight.
5), Simple and low cost installation
The weight of the fenders is supported by the water on which it
floats, therefore, the fender can be morred simply by means of a
guy rope or chain at minimal cost it can be removed easily to
another quay or jetty when not use or transfeered to alternative
mooring points as required
6), chain and tyre net
Almost floating fenders are protected by a chain and tyre net. The
purpose of the chain and tyre net is to protec the fender body from
damage by sharp objets or protrusions such as rough faced quay
walls, to distribute sheer forces along the length of the chain net
and to prevent the fender body from having to absorb them.
Marine depend on the ball safe for excess load boat fender using
ship to ship working press 0.05Mpa - 0.08 Mpa marine fender
Yokohama Pneumatic Fenders
What is a pneumatic fender?
What is a Yokohama fender?
How much does a Yokohama fender weight?
What are marine fenders?
Why is it called Yokohama fender?
What are ship fenders?
