D Type Rubber Fender

Built for the Harshest Environments

Henger’s D type rubber fenders are a strong and durable marine component. This fender mainly absorbs and mitigates the impact energy between the ship and the quay during berthing and mooring. This fender plays an important role in maritime safety and protects ships and docks from damage. Thanks to its excellent performance, the D-fender is widely used in ports, harbors, marinas, tugboats, workboats and other types of vessels. The D-fender has a very flexible design and can be anchored or bolted. It has stability and the ability to adapt to different environments. Our D type rubber fenders have passed various quality certifications such as ISO 9001/ISO 14001/ISO 45001. It can provide long-lasting and reliable protection for your harbor as well as docks.

D Type Rubber Fender

D Type Rubber Fenders are the most widely used type of dockside protection today. They have excellent physical properties and can counteract the impacts of ships coming into port. In addition, these fenders are extremely easy to install. They are often installed continuously on the quay and are used in conjunction with other fenders for quay protection.

HENGER’s D type rubber fenders are commonly available in three types. The common ones are DD type/DC type/solid D type.

  • DD type: This is a kind of rubber fender with D-shaped inner hole.
  • DO type: The inner hole is O-shaped, hence the name DO fender.
  • Solid D type: this kind of fender is hollow inside.
D Type Rubber Fender
Rubber D-fenders are installed to protect the docks

Technical specifications of D-type rubber fender

Type D rubber fenders come in various sizes to meet marine needs.

Rubber D-Fenders Drawing

Spec.

A

B

C

D

h

Φ E

Φ F

G

H

Flat bar

Bolt size

Weight

DD100

100

100

50

50

25

40

20

100-150

200-300

40×8

M16

8.7

DD150

150

150

75

75

37.5

50

25

100-150

200-400

60×10

M20

19.6

DD200

200

200

100

115

35

60

30

100-150

300-500

80×14

M24

32.9

DD200

200

200

100

100

50

60

30

100-150

300-500

80×14

M24

34.8

DD250

250

250

125

125

62.5

65

33

100-200

300-500

90×14

M27

54.4

DD300

300

300

150

185

40

65

35

100-200

300-600

110×16

M30

72

DD300

300

300

150

150

75

65

35

100-200

300-600

110×16

M30

78

D360

360

300

165

165

40

65

35

100-200

300-600

120×16

M30

85

DD350

350

350

175

175

87.5

80

38

100-250

300-600

130×16

M33

107

DD400

400

400

200

245

55

80

40

100-250

300-600

135×18

M36

128

DD400

400

400

200

200

100

80

40

100-250

300-600

150×16

M36

140

D500

500

500

250

250

90

95

45

100-250

400-600

160×20

M42

196

DD500

500

500

250

250

250

95

45

100-250

400-600

180×20

M42

218

Specification

R

E

SD100

140

2.6

SD150

210

6.3

SD200

279

11.2

SD250

346

17.5

SD300

418

25.3

SD350

476

34

SD400

595

45

SD500

745

69

Advantages of D type rubber fender

Type D rubber fender is a kind of protective equipment used to mitigate the impact of collision between ships and wharves. Its unique design and high-performance materials absorb impact energy efficiently. In addition, it provides strong resistance to collisions and can meet the needs of various environments.

Low installation cost: Type D rubber fender can be pre-bent, chamfered and drilled. It can also be pre-cut on demand. This ensures that it can be installed at a relatively low cost.

High Energy Absorption And Strong Reaction Force: Type D rubber fender has a strong energy absorption capacity. It can effectively withstand the impact of ships and provide enough reaction force. It can effectively avoid damage to the ship or dock.

Smaller Bottom Width, Suitable For Framed Pier And Shipwalker: The D fender has a smaller bottom design, and it is very suitable for protecting framed piers. In addition, this fender is easier to install. It blends better into existing dock structures and boat ramps, providing more effective dock protection.

Long service life: Hneger’s D fenders are made of high-quality rubber. This rubber is resistant to all types of harsh marine environments. Also, the strong build and quality materials boost durability and cut upkeep costs.

Mounting at any angle: This fender can be mounted at any angle to protect the dock. It is more convenient than other fenders.

Rubber D-fenders are installed to protect the docks
Rubber D-fenders for ship protection

How to choose the right D-rubber fender for your needs?

There are several key factors to consider when choosing the right D-rubber fender for your needs. This ensures the fender will work well in the application. It will protect the vessel and nearby facilities, like marinas.

Consider the vessel’s size, type, and the docking environment. Also, check energy absorption levels and compatibility with existing structures. For example, the location, size and connection of fenders should be compatible with the layout and design of the marina to avoid installation difficulties or affecting other functions of the marina. If the marina has special protective coverings or appurtenances, the fenders must be installed in such a way that they do not damage them.

It is advisable to consult Henger’s marine experts. Our experts have a wealth of specialized knowledge and practical experience, and they will be able to work with the details you provide—for example, the vessel’s parameters and the docking environment. Then, analyze and assess them. This helps you to choose the fender that best suits your needs and guarantees a safe and efficient docking of your vessel.

FAQ

Type D rubber fenders are designed to last, depending on the quality of the rubber, environmental factors and frequency of use, from 5 to 20 years.

The following factors affect the life of a fender

Rubber material: Natural rubber fenders have good elasticity and abrasion resistance, but poor aging resistance. Synthetic rubber such as EPDM is superior in weather, ozone and heat aging resistance, and the difference in material affects the service life.

Use of the environment:

Marine environment: seawater erosion, wave impact and marine organisms attached will accelerate the aging damage.

Climatic conditions: high temperature, high humidity, strong ultraviolet rays will make the rubber performance decline, the port of the tropical region aging faster.

Contact medium: contact with oil, acid and alkali and other chemical substances will lead to rubber swelling and degradation.

Ship berthing frequency and impact strength: frequent berthing, impact force, fenders under pressure and deformation, easy to fatigue damage, large and busy port replacement frequency is relatively high.

It is recommended that regular maintenance and inspection will ensure that any wear and tear is dealt with in a timely manner, thus extending their service life.

The cost of D-rubber fenders varies depending on size, material quality and additional features. In general, smaller sizes of D-rubber fenders, such as the D100, are relatively inexpensive. D-rubber fenders made of ordinary rubber are more affordable. Fenders made with high-quality rubber or with special additives to enhance performance cost more. For example, fenders made with natural rubber and synthetic rubbers such as butyl rubber are more resistant to aging and weathering, but they are also more expensive than fenders made with natural rubber alone.

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