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8″ Dog Bone Boat Trailer Keel Roller – 200mm Long, 70mm Diameter, 16mm Bore, UV-Stable Black Rubber (SKU: KEELROLLER8)
$6.80
Tapered 8-inch dog bone keel roller made from solid black rubber. Features 70mm diameter ends and 16mm bore. Ideal for fibreglass boats, trailers, and harsh marine environments.
In stock
8″ Dog Bone Keel Roller – Tapered Design, Black Rubber, UV-Stable
The KEELROLLER8 is a classic 8-inch dog bone-style keel roller, machined from a solid piece of UV-stable black rubber. With 70mm tapered ends and a 16mm bore, it’s built to handle daily use in tough marine conditions without cracking or crumbling.
Designed to guide and support fibreglass boat hulls during loading and unloading, this roller offers a snug keel cradle that reduces wear and absorbs shock. It’s an easy upgrade for DIY trailer users or professional repairers looking for durability and simplicity.
Product Specifications
(Table is scrollable on mobile)
| Item | Details |
|---|---|
| Model | KEELROLLER8 |
| Type | Dog Bone Style |
| Length | 200mm (8″) |
| Diameter | 70mm (at each end) |
| Bore Size | 16mm |
| Material | Black Rubber (Solid) |
| UV Resistance | Yes |
Key Features
- Machined from solid black rubber for long life
- Tapered dog bone profile for centred keel support
- Compatible with most standard 16mm spindles
- UV-resistant – won’t crack in the sun
- Great fit for fibreglass boats and marine trailers
Reliable, affordable, and easy to fit – this roller’s a no-brainer for small to mid-size trailer setups.
Frequently Asked Questions (FAQ)
- Q: Will this roller fit a 16mm spindle?
A: Yes, it’s made to match standard 16mm shafts used in most trailers. - Q: What boats is this suited for?
A: Fibreglass boats under 5.5m in length, or light to medium hulls that need smooth loading. - Q: Is this a soft or hard rubber?
A: It’s a solid black rubber, not overly soft, but designed to absorb moderate shock without deforming. - Q: Does it include hardware?
A: No, this listing is for the roller only. Brackets and spindles are sold separately.
| Weight | 1 kg |
|---|---|
| Dimensions | 29 × 16 × 15 cm |
| Location | E-5-3 |
| Brand | |
| Warranty | |
| Manufacturer Part Number | |
| Featured Refinements |
Usage Guide
To install the KEELROLLER8:
- Slide it onto a 16mm spindle.
- Secure between brackets using washers or locking pins.
- Ensure it aligns with the keel centre to guide the boat evenly.
- Rinse with freshwater after each use in saltwater environments.
Evaluation & Recommendation
This roller is a solid performer for everyday boat trailers, especially fibreglass models. Simple, tough, and gets the job done.
✅ Recommended If You:
- Have a small to mid-sized fibreglass boat
- Use 16mm spindle setups
- Need a basic, tapered roller to assist keel centering
- Prefer non-marking black rubber construction
❌ Not Ideal If You:
- Have a heavy or wide hull needing more support width
- Use non-standard spindle sizes
- Are replacing adjustable or integrated roller systems
Simple, strong, and stable – this dog bone roller is your trailer’s best mate.
🛞 Scroll sideways on mobile • Tap to expand product category
🔳 Parallel Keel Rollers
| Product | Length | Width | Bore | Material | Hardness | Use | Advantages | Link |
|---|---|---|---|---|---|---|---|---|
| 12″ Parallel 26mm | 298mm | 75mm | 26mm | Black Rubber | 85 Duro | Large boats | Heavy-duty load support | View |
| 12″ Parallel 18mm | 298mm | 75mm | 18mm | Black Rubber | 85 Duro | Medium trailers | Balanced support | View |
| 8″ Parallel 26mm | 204mm | 75mm | 26mm | Black Rubber | 85 Duro | Mid-size trailers | Non-marking, stable | View |
| 8″ Parallel 20mm | 204mm | 75mm | 20mm | Black Rubber | 85 Duro | General trailer | UV stable, easy install | View |
| 8″ Parallel 17mm | 204mm | 75mm | 17mm | Black Rubber | 85 Duro | Fibreglass boats | Non-marking, UV-proof | View |
🐾 Dog Bone Rollers
| Product | Length | Width | Bore | Material | Hardness | Use | Advantages | Link |
|---|---|---|---|---|---|---|---|---|
| 12″ Dog Bone 26mm | 297mm | 82mm | 26mm | Black Rubber | 85 Duro | Large hulls | Centres boat naturally | View |
| 8″ Dog Bone 16mm | 200mm | 70mm | 16mm | Black Rubber | – | Light trailers | Compact & tapered | View |
🍬 Cotton Reel / Round Type
| Product | Length | Width | Bore | Material | Hardness | Use | Advantages | Link |
|---|---|---|---|---|---|---|---|---|
| 8″ Cotton Reel 20mm | 192mm | 75mm | 20mm | Black Rubber | 85 Duro | General trailer | Firm grip, compact | View |
| 2.5″ Round Cap 17mm | 78mm | – | 17mm | Black Rubber | 85 Duro | End bumpers | Lightweight edge guard | View |
🪒 Vee & Bow Rollers
| Product | Length | Width | Bore | Material | Hardness | Use | Advantages | Link |
|---|---|---|---|---|---|---|---|---|
| 8″ Vee Roller 19.5mm | 198mm | 68mm | 19.5mm | Black Rubber | 85 Duro | Hull centering | Natural alignment | View |
| 4″ Jet Ski Bow 14mm | 100mm | 70/55mm | 14mm | Black Rubber | 85 Duro | Jet Ski | Small bow cradle | View |
🌟 Special Materials (PVC / Short Sizes)
| Product | Length | Width | Bore | Material | Hardness | Use | Advantages | Link |
|---|---|---|---|---|---|---|---|---|
| KNOTT PVC Roller | 298mm | 95/61mm | 17mm | PVC + Aluminium core | – | Non-marking pro | Perfect for white hulls | View |
| Short Rubber 102mm | 102mm | 59.5mm | 16.5mm | Black Rubber | – | Mini trailers | Non-marking & compact | View |
