- Dawson Group Ltd. - China Manufacturer, Supplier, Factory
Pneumatic Rubber Fender
(1) High energy absorption
The amount of energy absorbed is the main technical performance indicators fender instruments. With the ship's tonnage growth, berthing operations, ship collision energy contact quay or other ships also doubled. Huge collision energy must rely on the contact area on the fender and enough to absorb sufficient deformation. Aohai rubber ship fender use compressed air as the buffer medium to absorb ship impact energy and have good elasticity.
(2) Ultra low back pressure
The inside air of pneumatic fenders is low pressure gas, the internal pressure increase is very limited during compression deformation. Due to the large contact area, unit pressure acting on the ship hull surface is very low, compared with other fender instruments, is not the common low back pressure.
(3) Inclined contact, good adaptability
Ship must have certain angle which have the possibility of contacting the side of the shore. As the inclined interface of sea inflatable fender, its adaptability is much higher than other fender.
(4)Floating performance is good, not subject to tidal influence, fender can be maintained in the ideal level
Pneumatic fenders floating on the water surface (more than 50% of the volume), along with the change of position is not relative to the tidal fluctuation. Especially the ship as the waves rolling, cylindrical inflatable fenders with rolling, the friction force is very small. So it will not damage the coating surface of the hull, and also decrease the moving.
(5) Both end fender flange produced by special materials, acid and alkali resistance, oxidation resistance, not easy to rust.
50Kpa Pneumatic rubber fender: | Nominal Size | Initial internal pressure | Guaranteed energy absorption | Reaction Force at GEA | Hull pressure at GEA | Safety value setting press0ure | Testing pressure | Approx. Fender body weight | Weight of net type(type I ) | Weight of sling type
(type II) |
| Approx. Weight of net |
| Diameter x length | E | R | p | Chain net | Wire net | Synthetic fiber net |
| (mm × mm) | (ft × ft) | (kPa) | (kNm) | (kN) | (kPa) | (kPa) | (kPa) | (kg) | (kg) | (kg) | (kg) | (kg) |
| 500×1000 | 1.6×3 | 50 | 6 | 64 | 132 | - | 200 | 22 | 110 | 30 | 20 | 32 |
| 600×1000 | 2×3 | 50 | 8 | 74 | 126 | - | 200 | 25 | 120 | 30 | 22 | 36 |
| 700×1500 | 2.3×5 | 50 | 17 | 137 | 135 | - | 200 | 45 | 150 | 40 | 37 | 55 |
| 1000×1500 | 3×5 | 50 | 32 | 182 | 122 | - | 200 | 73 | 200 | 80 | 51 | 98 |
| 1000×2000 | 3×6.5 | 50 | 45 | 257 | 132 | - | 200 | 88 | 220 | 140 | 57 | 113 |
| 1200×2000 | 4×6.5 | 50 | 63 | 297 | 126 | - | 200 | 131 | 320 | 190 | 68 | 156 |
| 1350×2500 | 4.4×8 | 50 | 102 | 427 | 130 | - | 200 | 200 | 350 | 200 | - | 240 |
| 1500×3000 | 5×10 | 50 | 163 | 579 | 132 | - | 200 | 250 | 530 | 350 | - | 290 |
| 1700×3000 | 5.6×10 | 50 | 191 | 639 | 128 | - | 200 | 290 | 580 | 440 | - | 330 |
| 2000×3500 | 6.5×11.5 | 50 | 308 | 875 | 128 | - | 200 | 405 | 960 | 640 | - | 465 |
| 2500×4000 | 8×13 | 50 | 663 | 1381 | 137 | 175 | 250 | 902 | 1240 | 910 | - | 1080 |
| 2500×5500 | 8×18 | 50 | 943 | 2019 | 148 | 175 | 250 | 1090 | 1850 | 1160 | - | 1320 |
| 3300×4500 | 11×15 | 50 | 1175 | 1884 | 130 | 175 | 250 | 1460 | 1710 | 1270 | - | 1840 |
| 3300×6500 | 11×21 | 50 | 1814 | 3015 | 146 | 175 | 250 | 1870 | 2570 | 1910 | - | 2250 |
| 3300×10600 | 11×35 | 50 | 3067 | 5257 | 158 | 175 | 250 | 2560 | 4660 | 3300 | - | 3060 |
| 4500×9000 | 15×30 | 50 | 4752 | 5747 | 146 | 175 | 250 | 3940 | 5390 | 3620 | - | - |
| 4500×12000 | 15×40 | 50 | 6473 | 7984 | 154 | 175 | 250 | 4790 | 6990 | 5190 | - | - |
NOTE: Other size can be made according to customers request.
80Kpa Pneumatic rubber fender:
Pneumatic 80 fender pressure
Nominal size
diameter × length | Internal pressure | Minimum endurable pressure | Safety-valve pressure setting kPa | Test pressure at 0% deflection kPa |
| at 0% deflection kPa | at 60% deflection
kPa | at 0% deflection kPa | at 60% deflection
kPa |
| 500×1000 | 80 | 174 | 480 | 609 | - | 250 |
| 600×1000 | 80 | 166 | 480 | 581 | - | 250 |
| 700×500 | 80 | 177 | 480 | 620 | - | 250 |
| 1000×1500 | 80 | 160 | 480 | 560 | - | 250 |
| 1000×2000 | 80 | 174 | 480 | 609 | - | 250 |
| 1200×2000 | 80 | 166 | 480 | 581 | - | 250 |
| 1350×2500 | 80 | 170 | 480 | 585 | - | 250 |
| 1500×3000 | 80 | 174 | 480 | 609 | - | 250 |
| 1700×3000 | 80 | 168 | 480 | 588 | - | 250 |
| 2000×3500 | 80 | 168 | 480 | 588 | - | 250 |
| 2500×4000 | 80 | 180 | 560 | 630 | 230 | 300 |
| 2500×5500 | 80 | 195 | 560 | 683 | 230 | 300 |
| 3300×4500 | 80 | 171 | 560 | 599 | 230 | 300 |
| 3300×3500 | 80 | 191 | 560 | 669 | 230 | 300 |
| 3300×10300 | 80 | 208 | 560 | 728 | 230 | 300 |
| 4500×9000 | 80 | 192 | 560 | 672 | 230 | 300 |
| 4500×12000 | 80 | 202 | 560 | 707 | 230 | 300 |
Pneumatic 80 fender size and performance
Nominal size
Diameter × length
mm | Initial internal pressure
kPa | Guaranteed energy absorption GEA | Reaction force at GEA deflection
R | Hull pressure (internal pressure) at GEA deflection
p |
Minimum value at deflection 60±5%
kJ | Tolerance±10%
kN | Reference value
kPa |
| 500×1000 | 80 | 8 | 85 | 174 |
| 600×1000 | 80 | 11 | 98 | 166 |
| 700×1500 | 80 | 24 | 180 | 177 |
| 1000×1500 | 80 | 45 | 239 | 160 |
| 1000×2000 | 80 | 63 | 338 | 174 |
| 1200×2000 | 80 | 88 | 390 | 166 |
| 1350×2500 | 80 | 142 | 561 | 170 |
| 1500×3000 | 80 | 214 | 761 | 174 |
| 1700×3000 | 80 | 267 | 840 | 168 |
| 2000×3500 | 80 | 430 | 1150 | 168 |
| 2500×4000 | 80 | 925 | 1815 | 180 |
| 2500×5500 | 80 | 1317 | 2653 | 195 |
| 3300×4500 | 80 | 1640 | 2476 | 171 |
| 3300×6500 | 80 | 2532 | 3961 | 191 |
| 3300×10600 | 80 | 4281 | 6907 | 208 |
| 4500×9000 | 80 | 6633 | 7551 | 192 |
| 4500×12000 | 80 | 9037 | 10490 | 202 |
NOTE: Other size can be made according to customers request.
Production Processes:
BV Testing:
Packing & Delivery:
Packing Details : Nude Packing.
Delivery Details : 3-7 days after order. Depends on the quantity.
BV Test Report about Marine Rubber Fenders:
Application of Yokohama Type Rubber Fender:
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