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Natural Rubber Yokohama Pneumatic Fender 50kpa 80kpa 2.0m*3.5m For Dock

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Natural Rubber Yokohama Pneumatic Fender 50kpa 80kpa 2.0m*3.5m For Dock

Country/Region	china
City & Province	qingdao shandong
Categories	Vending Machines

Product Details

Natural Rubber Yokohama Pneumatic Fender 50kpa 80kpa 2.5m*3.5m

What’s Yokohama Pneumatic Fender?

Marine rubber bumper is an upgraded product of boat fender widely used worldwide, which is filled with high pressure air to withstand berthing impacts. Compared with normal elastic rubber fenders (such as waste tires, solid rubber fenders, etc.), it has high guaranteed energy absorption, low surface impact, combining high abrasion resistance with low friction and quick installation. Since its application, pneumatic rubber fender has been used as a buffer due to its high performance, and it has been widely used in ship-to-ship operation and ship-to-jetty operation.

Type of the yokohama fender

Advantages of the pneumatic fender

1.Great Safety and Reliability

2.No Deterioration or Variation in Performance

3.Numerous Advantages at Inclined Berthing

4.Cost-effective System

5.Softer Reaction Force for Ship and Jetty Structure

6.Stronger against Shearing Force

7.Adaptable to the Tide

8.Simple and Cost-competitive Installation,Low Maintenance Cost

Detailed Imagine

Specifications of Marine Rubber Bumper

Pneumatic 50 Standard Sizes
Dimension		Deflection (60%)
D (mm)	L (mm)	Reaction Force (KN)	Guaranteed Energy Absorption (KNm)
500	1000	64	6
600	1000	74	8
700	1000	137	17
1000	1500	182	32
1000	2000	257	45
1200	2000	297	63
1350	2500	427	102
1500	2500	499	134
1500	3000	579	153
1700	3000	639	191
2000	3500	875	308
2000	4000	1000	352
2500	4000	1381	663
2500	5500	2019	1131
3000	5000	2422	1357
3000	6000	2906	1293
3300	4500	1884	1175
3300	6500	3015	1814
3300	10600	5257	3067
4500	9000	5747	4752
4500	12000	7984	6473

Pneumatic 80 Standard Sizes
Dimension		Deflection (60%)
D (mm)	L (mm)	Reaction Force (KN)	Guaranteed Energy Absorption (KNm)
500	1000	84	9
600	1000	94	12
700	1000	179	25
1000	1500	236	47
1000	2000	337	66
1200	2000	386	89
1350	2500	554	143
1500	2500	630	179
1500	3000	756	215
1700	3000	829	262
2000	3500	1126	424
2000	4000	1453	740
2500	4000	1817	925
2500	5500	2653	1327
3000	5000	2689	1558
3000	6000	3275	1878
3300	4500	3476	1640
3300	6500	3829	2508
3300	10600	6907	4281
4500	9000	7551	6633
4500	12000	10490	9037

Note :

1. Figures on the table comply with requirements of ISO17357-1:2014.

2. Weight of fender body and net may vary ±10%.

3. Special sizes are available upon request.

How to Chose Marine Rubber Bumper?

Selection of docking bumpers for small and medium-sized ships:

Tonnage(T)	Recommended Dimension:Diameter x Length(m)	Types of Ship
50	0.5 × 1.0	fishing boat
100	0.7 × 1.5~1.0 × 1.5	fishing boat
200	1.0 × 1.5~1.2 × 2.0	fishing boat, towboat
300-500	1.2 × 2.0~1.5 × 2.5	fishing vessel, towboat
1000	1.5 × 2.5~1.5 × 3.0	towboat, cargo ship
3000	2.0 × 3.0~2.0 × 3.5	cargo ship, marine fishing boat
10000	2.0 × 3.5~2.5 × 4.0	freighter

Selection of docking bumpers for large tonnage ships:

Dead Weight Tonnage (DWT)	Assumed Landing Speed(M/S)	Effective Kinetic Energy (KN.M)	Dimension: Diameter×Length(m)
200000	0.15	1890	3.3 x 6.5
150000	0.15	1417	3.3 x 6.5
100000	0.15	945	3.0 x 5.0
85000	0.17	1031	3.0 x 6.0
50000	0.18	680	2.5 x 5.5
40000	0.20	672	2.5 x 5.5
30000	0.22	609	2.5 x 4.0
20000	0.25	525	2.5 x 4.0
15000	0.26	425	2.5 x 4.0
10000	0.28	329	2.0 x 4.0
5000	0.33	228	2.0 x 3.5

Safety and Reliability

Yokohama Pneumatic Rubber Fenders are constructed of 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. Operational experience over a long period of time attests to its high safety and reliability, and hydraulic pressure tests have proven the strength to be suitable. Furthermore, large-size fenders are equipped with a safety valve to release the inside air in the event of accidental over-pressure. The figure below shows data obtained from many destructive pressure tests at various percentage compressions. Such data are used to establish a basic minimum endurable pressure (MEP) curve for pneumatic rubber fenders.

Advantages at Inclined Berthing

Ships usually make initial contact with the dock or another ship on STS operations at an oblique angle. In the case of solid rubber fenders or foam fenders, rated reaction force and energy absorption decreases considerably at inclined compressions compared with parallel compression. In order to compensate for the decrease of energy absorption at inclined compression, it is necessary to use larger sizes in the case of solid rubber fenders or foam fenders.

Adaptable to the Tide

Yokohama Pneumatic Rubber Fenders basically float on the water in an unrestricted vertical plane corresponding to the tidal range and ship's vertical movement. This means that energy absorption always takes place at the most suitable position, and that only one fender is required per dolphin.