Overview of D Type Rubber Fenders
OLIPORTS manufactures and delivers a wide range of marine-grade D type rubber fenders for ship and dock protection. These extruded fenders offer a flat back design for easy installation and come in solid and hollow types.
D Fender Types
OLIPORTS offers D fenders in three standard cross-sectional types:
DD Type Fender
With a D-shaped hollow core. Excellent shock absorption and flexibility. Suitable for both horizontal and vertical mounting.
DC Type Fender
With an . Enhanced energy absorption with lower reaction force. Ideal for lightweight protection.O-shaped (circular) inner chamber
DS Type Fender
Without an inner chamber (Solid profile). Maximized durability and wear resistance. Preferred for heavy-duty workboats and tugboats.
All types come with a flat rear face for simplified bolt-on or strip-on installation. OLIPORTS can deliver custom lengths, beveled ends, pre-drilled holes, and vulcanized corners for curved hull sections.
Profiles of DD Shaped Fenders
Mounting Methods for DD Type Rubber Fenders
DD Type rubber fenders from OLIPORTS can be installed in two common ways, depending on the size and application environment of the fender:
Bolt-Through Flat Bar Mounting (Horizontal)
This method is suitable for standard-sized DD fenders:
- The fender is installed using flat steel bars and bolt-through fixing aligned with the molded holes on the fender body.
- Bolts are inserted horizontally through the fender’s core and flat bar, securing it firmly to the dock face.
- Recommended bolt spacing is approximately 150mm apart, ensuring optimal load distribution and vibration resistance.
- This method allows quick replacement and lower-cost installation for smaller vessels and pontoons.
Vertical Bolt-Through Mounting (Heavy-Duty)
This method is designed for larger or heavy-duty D fenders:
- Long bolts are inserted vertically from the top, passing through the center of the fender body and into pre-anchored holes in the quay wall or fender base.
- The vertical anchoring provides enhanced resistance to high-impact forces, especially suitable for tugboats, pilot vessels, and high-traffic ports.
- Washers and nuts are added on the top side to ensure tight fixing and easy maintenance.
Proper anchoring depth, flatness of the quay surface, and fender spacing must be considered during installation. Custom mounting templates and dimension drawings can be provided by OLIPORTS upon request.
Dimensions of DD Type Fenders
| Model | A (mm) | B (mm) | C (mm) | D (mm) | Weight (kg/m) | Max Length (mm) | Bolt Size | Flat Bar |
|---|---|---|---|---|---|---|---|---|
| DD-fender 42x27mm D-bore 27x13mm | 42 | 27 | 27 | 13 | 1.0 | 20000 | M8 | 15×3 |
| DD-fender 50x60mm D-bore 20x30mm | 50 | 60 | 20 | 30 | 3.0 | 25000 | M8 | 15×3 |
| DD-fender 80x70mm D-bore 50x30mm | 80 | 70 | 50 | 30 | 5.0 | 125000 | M12 | 35×5 |
| DD-fender 100x95mm D-bore 60x48mm | 100 | 95 | 60 | 48 | 8.0 | 12500 | M12 | 40×5 |
| DD-fender 125×125 D-bore 60x60mm | 125 | 125 | 60 | 60 | 13.5 | 6000 | M16 | 50×6 |
| DD-fender 150×150 D-bore 75x75mm | 150 | 150 | 75 | 75 | 19 | 6000 | M16 | 60×8 |
| DD-fender 200×150 D-bore 100x80mm | 200 | 150 | 100 | 80 | 24 | 6000 | M20 | 80×10 |
| DD-fender 200×200 D-bore 100x100mm | 200 | 200 | 100 | 100 | 34 | 6000 | M20 | 80×10 |
| DD-fender 200×250 D-bore 80x125mm | 200 | 250 | 80 | 125 | 45.5 | 6000 | M24 | 90×10 |
| DD-fender 250×200 D-bore 125x100mm | 250 | 200 | 125 | 100 | 53 | 6000 | M24 | 90×12 |
| DD-fender 250×250 D-bore 125x125mm | 250 | 250 | 125 | 125 | 53 | 6000 | M24 | 90×12 |
| DD-fender 300×300 D-bore 150x150mm | 300 | 300 | 150 | 150 | 76 | 6000 | M27 | 110×12 |
| DD-fender 350×350 D-bore 175x175mm | 350 | 350 | 175 | 175 | 103 | 5000 | M30 | 130×15 |
| DD-fender 380×380 D-bore 190x190mm | 380 | 380 | 190 | 190 | 122 | 5000 | M36 | 140×15 |
| DD-fender 400×400 D-bore 200x200mm | 400 | 400 | 200 | 200 | 136 | 5000 | M36 | 150×15 |
| DD-fender 500×500 D-bore 250×250mm | 500 | 500 | 250 | 250 | 210 | 5000 | M42 | 180×20 |
Mounting Methods for DC Type Fenders
Dimensions of DC Type Fenders
| Model | A (mm) | B (mm) | C (mm) | D (mm) | Weight (kg/m) | Max Length (mm) | Bolt Size | Strip (Flat Bar) |
|---|---|---|---|---|---|---|---|---|
| DC-fender 40x30mm O-bore 14mm | 40 | 30 | 14 | 6 | 1.0 | 20000 | M5 | 15×3 |
| DC-fender 100×100 O-bore 30mm | 100 | 100 | 30 | 15 | 10.5 | 6000 | M12 | 50×6 |
| DC-fender 100×100 O-bore 50mm | 100 | 100 | 50 | 15 | 10 | 6000 | M12 | 50×6 |
| DC-fender 100×115 O-bore 30mm | 100 | 115 | 30 | 15 | 12 | 6000 | M16 | 50×6 |
| DC-fender 125×125 O-bore 50mm | 125 | 125 | 50 | 20 | 15 | 6000 | M16 | 50×6 |
| DC-fender 125×150 O-bore 60mm | 125 | 150 | 60 | 20 | 18 | 6000 | M16 | 60×8 |
| DC-fender 125×165 O-bore 60mm | 125 | 165 | 60 | 20 | 20 | 6000 | M20 | 60×8 |
| DC-fender 150×150 O-bore 65mm | 150 | 150 | 65 | 20 | 20.6 | 6000 | M16 | 60×8 |
| DC-fender 200×200 O-bore 75mm | 200 | 200 | 75 | 25 | 38.5 | 6000 | M20 | 80×10 |
| DC-fender 200×230 O-bore 90mm | 200 | 230 | 90 | 25 | 44.2 | 6000 | M20 | 90×10 |
| DC-fender 250×250 O-bore 100mm | 250 | 250 | 100 | 30 | 59 | 6000 | M24 | 100×10 |
| DC-fender 300×300 O-bore 100mm | 300 | 300 | 100 | 30 | 90.6 | 6000 | M27 | 110×12 |
| DC-fender 300×300 O-bore 150mm | 300 | 300 | 150 | 30 | 78.3 | 6000 | M27 | 110×12 |
| DC-fender 300×300 O-bore 125mm | 300 | 300 | 125 | 30 | 83.7 | 6000 | M27 | 110×12 |
| DC-fender 350×350 O-bore 150mm | 350 | 350 | 150 | 35 | 113 | 6000 | M30 | 120×12 |
| DC-fender 400×400 O-bore 200mm | 400 | 400 | 200 | 35 | 139.3 | 6000 | M33 | 130×15 |
| DC-fender 450×450 O-bore 225mm | 450 | 450 | 225 | 35 | 165 | 6000 | M36 | 180×20 |
| DC-fender 500×500 O-bore 250mm | 500 | 500 | 250 | 35 | 214 | 6000 | M42 | 180×20 |
Profiles of DS Shaped Fenders
Mounting Methods for DS Type Fenders
Dimensions of DS Type Fenders
| Model | A (mm) | B (mm) | C (mm) | D (mm) | Weight (kg/m) | Max Length (mm) | Bolt Size | Strip (Flat Bar) |
|---|---|---|---|---|---|---|---|---|
| DS-fender 100x100mm | 100 | 100 | 25 | 15 | 11 | 6000 | M12 | 50×6 |
| DS-fender 125x125mm | 125 | 125 | 25 | 20 | 19 | 6000 | M16 | 50×6 |
| DS-fender 150x150mm | 150 | 150 | 30 | 20 | 24.8 | 6000 | M16 | 60×8 |
| DS-fender 200x200mm | 200 | 200 | 45 | 25 | 44.2 | 6000 | M20 | 80×10 |
| DS-fender 250x250mm | 250 | 250 | 50 | 30 | 69 | 6000 | M24 | 100×10 |
| DS-fender 300x300mm | 300 | 300 | 60 | 30 | 99.4 | 6000 | M24 | 110×12 |
| DS-fender 350x350mm | 350 | 350 | 70 | 35 | 135.2 | 6000 | M30 | 120×12 |
| DS-fender 400x400mm | 400 | 400 | 80 | 35 | 176.6 | 6000 | M30 | 130×15 |
| DS-fender 450x450mm | 450 | 450 | 90 | 35 | 226 | 6000 | M36 | 130×15 |
| DS-fender 500x500mm | 500 | 500 | 100 | 35 | 280 | 6000 | M36 | 130×15 |
Common Applications of D Type Rubber Fenders
- Tugboats / Pilot Boats
- Floating pontoons / piers
- Loading bays
- Workboats
- Quaywalls
- Ship hull edge protection
Related OLIPORTS Products
Why Choose OLIPORTS Rubber Fenders?
At OLIPORTS, we understand that rubber fenders are not just buffers—they are critical to the safety and efficiency of your port operations. That’s why we take fender engineering seriously—from raw materials to design to global delivery.
Premium Rubber Compounds, Superior Performance
OLIPORTS rubber fenders are made from high-quality natural rubber blended with advanced synthetic rubbers such as Styrene Butadiene Rubber (SBR) and Butadiene Rubber (BR). These compounds offer outstanding mechanical and environmental durability, ensuring excellent reaction force and energy absorption across our D-type fender range:
- Reaction Force (R.F.): From 77 kN (DD100) up to 383 kN (DD500)
- Energy Absorption (E.A.): From 1.4 kNm to 35.9 kNm
Every batch of rubber is tested to meet international material standards, including:
- Tensile Strength / Elongation at Break: GB/T528, ASTM D412, ISO 37 : ≥16Mpa
- Hardness: GB/T531, ASTM D2240, DIN 53505 : ≤ 84 Degree
- Compression Set: GB/T7759, ISO 815, JIS K 6261 : ≤ 30 % ( 70℃, 22h, 25%)
- Tear Resistance: ASTM D624 Die B, BS ISO34-1 : ≥70 kN/m
- Abrasion Resistance: GB/T9867, ISO 4649 : ≤150mm³
- Bond Strength Steel to Rubber: ≥7 kN/m
- Ozone Resistance: No surface cracks (40°C, 48h, 50 pphm at 20%)
All OLIPORTS marine fender products come with full certification from CCS, ABS, BV, DNV-GL, and SGS.
Engineered by Know-How, Not Just Numbers
We don’t just manufacture—we engineer. OLIPORTS brings over a decade of hands-on port equipment experience. We understand the critical parameters that affect fender system selection:
- Ship Information: Deadweight, LOA, displacement, bow radius, hull pressure
- Berth Conditions: Fender spacing, deck level, soffit level, tide range, wind force
- Site Conditions: Water salinity, winter ice presence, climate zones, UV exposure
This allows us to recommend the most suitable fender type, size, and installation system, with full customization options.
Expertise That Cuts Rework and Guesswork
From fender sizing to drawing approval, from sample production to mass delivery—we reduce the trial-and-error. OLIPORTS is known for:
- Reviewing drawings with technical accuracy
- Reducing sample delivery time and rework
- Producing fenders that fit right, perform well, and last long
Every project is handled with attention to detail, to ensure that your fender system performs safely from day one.
Manufacturing + Global Fulfillment
With global delivery experience across more than 40 countries, OLIPORTS offers fast, professional, and reliable service. Whether it’s one berth or an entire terminal, we support your port project with reliable rubber fender solutions built to ISO and IACS standards.
Get Your Fender Solution & Price.
Need help selecting the right fender system for your berth？Want to Know the Price of D-Type Rubber Fenders？Let us help you select the right D fender size and configuration for your berth. 💡 Based on your port design, berthing energy, and vessel data, we’ll provide:
⚙️ Recommended drawings & specifications
💬 A tailored quotation with best lead time
📎 Support for class approval documents
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