Characteristics of Pneumatic Rubber Fender
1. Using compressed air for buffering, the pneumatic rubber fender deforms gently while being squeezed and pressed. It offers a large contact surface, low reaction force and large energy absorption.
2. When a ship is berthing at an angle, the pneumatic rubber fender can achieve oblique contact with the ship due to its unique structure, thus better protecting the ship and the dock.
3. The fender is floating on water all the time, allowing a ship to safely berthing at any time without influence from the rising and fall of tidewater and sea wave, etc. Meanwhile, floating on water ensures small friction force, which ensures no damage to ship's external coating and the rubber fender itself.
4. It is very easy for installation. Bolts and nuts are not required. The one thing we need to do is to use rope to tie the marine fender to the dock or the anchor post of a ship.

Applications of Pneumatic Rubber Fender
Typically, the pneumatic rubber fenders are tied to docks and ships to protect docks and ships from being damaged during berthing process. In addition, they can also be used as buoys, for pipe sealing and in the processing of transporting goods.

Types of Pneumatic Rubber Fender
A standard Hengsheng pneumatic rubber fender has no protective jacket and is in black color. The color is also customizable.
In order to prevent scratch damages to the fender, we can also offer different types of protective jacket for the rubber fender. There are three types of jackets available, as shown below.

Tire network type jacket is composed of several rubber tires which are connected with each other and tied tightly onto the pneumatic rubber fender. The two rings at the two ends of the fender can rotate flexibly. The fender with this type of jacket is suitable for large sized ships and vessels.

Rubber network type jacket is composed of special rubber pads and is also tightly tied onto the fender body. It expands and contracts flexibly when the fender is compressed. Pneumatic rubber fenders with this jacket is ideal for medium and small sized ships.

Cord network type jacket is weaved using nylon cords and the marine fender with this type of jacket is ideal for small sized vessels.

Structure
A standard pneumatic rubber fender is composed of four parts.
1. External rubber layer. It is used to protect the cord fabric layer and inner rubber layer, and has high tensile strength and wearing resistance.
2. Cord fabric layer. It is the reinforced layer of the pneumatic rubber fender. Its is twined using high strength cord fabric material.
3. Inner rubber layer. It functions to contain the compressed air and make sure there is no air leakage.
4. End flanges. It is the part where the air valve, embedded metallic parts and cord fabric layer are fixed together. It allows gas-filling and gas-discharging, and also allows the pneumatic rubber fender to be lifted.

1. External rubber layer  2. Cord fabric layer   3. Inner rubber layer  4. End flanges

End Flange Structure

Specifications and Performance of Pneumatic Rubber Fender
The reaction force (R) and energy absorption (GEA) of the marine fender system when the rated compression deformation is 60%±5%.

Specification(D×L)	Initial inflation pressure (Po) (0.05MPa)			Initial inflation pressure (Po) (0.08MPa)
	Weight (kg)	Reaction force (kN)	Energy absorption (KJ)	Weight (kg)	Reaction force (kN)	Energy absorption (KJ)
0.5×1.0	25	64	6	25	83	8
0.6×1.0	32	74	8	32	96	11
0.7×1.5	50	137	17	50	178	24
1.0×1.5	80	182	32	80	235	44
1.0×2.0	100	257	45	125	335	63
1.2×2.0	120	297	63	165	386	86
1.35×2.5	165	427	102	226	554	140
1.5×3.0	315	597	153	370	751	211
1.7×3.0	405	639	191	436	830	263
2.0×3.5	590	875	308	632	1138	424
2.5×4.0	1050	1381	663	1110	1815	925
2.5×5.0	1333	2019	943	1410	2653	1317
3.0×5.0	1880	2104	1210	215	2709	1571
3.0×6.0	2160	2583	1485	2470	3292	1888
3.3×4.5	2020	1884	1175	2300	2476	1640
3.3×6.0	2300	2783	1675	2600	3652	2338
3.3×6.5	2700	3015	1814	3080	3961	2532

Note: Weight on above chart refers to the weight of the pneumatic rubber fender excluding the jacket. The weight tolerance is ±10%, and reaction force tolerance is ±10%.

Hengsheng is a professional pneumatic rubber fender manufacturer in China. Our products include cylindrical rubber fender, shipside vertical rubber fender, supper cone fender, rubber corner packing, rubber gasket, shipping facilities rubber sealed products, and more.