Boat Trailer 12″ Parallel Keel Roller – 298mm Long, 75mm Diameter, 26mm Bore, Black Rubber (SKU: PRBK300X26)
$26.70
Heavy-duty 12-inch parallel keel roller made from 85 Duro black rubber. Features a 26mm bore ideal for larger spindles. Offers smooth, even keel support for big boats and long trailers.
Out of stock
12″ Parallel Keel Roller – Built for Big Boats and Bigger Loads
The PRBK300X26 is a large and robust parallel keel roller designed to support heavy-duty boat trailers. At 298mm in length with a 26mm bore, it’s perfect for trailers using large shafts or requiring extended contact with the boat keel during loading and unloading.
Made from 85 Duro black rubber, this roller is firm enough to guide without flex and absorbs impact while maintaining hull alignment. Its parallel profile ensures even contact across the full surface, especially useful for straight keel designs.
Product Specifications
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| Item | Details |
|---|---|
| Model | PRBK300X26 |
| Type | Parallel Keel Roller |
| Length | 298mm (12″) |
| Diameter | 75mm |
| Bore Size | 26mm (loose fit on 25mm shaft) |
| Material | Black Rubber – 85 Duro |
| Weight | 2kg |
Where It Works Best:
- Heavy boats or larger fibreglass vessels
- Boat trailers with wide keel support frames
- Systems using 25–26mm shafts or spindles
When you need length and load capacity – go parallel, go PRBK300X26.
Frequently Asked Questions (FAQ)
- Q: Will this fit a 25mm spindle?
A: Yes – the 26mm bore provides a slightly loose fit for 25mm shafts, which allows the roller to rotate smoothly. - Q: Is this suitable for fibreglass boats?
A: Absolutely – the non-marking rubber protects fibreglass hulls while offering strong support. - Q: Can this be used in saltwater conditions?
A: Yes – the rubber is marine-grade and UV-stable, suitable for salt and sun exposure. - Q: What’s the benefit of the parallel shape?
A: It provides even surface contact across flat keels and adds more bearing area for load distribution.
| Weight | 1.6 kg |
|---|---|
| Dimensions | 30 × 7 × 7 cm |
| Location | A-4-8 |
| Featured Refinements | |
| Manufacturer Part Number | |
| Brand |
Usage Guide
- Slide onto a 25mm spindle (will sit loosely in 26mm bore).
- Center the roller along the trailer’s support channel.
- Use retaining washers or pins to secure the roller.
- Check regularly for salt buildup and rinse after use.
Evaluation & Recommendation
With its large dimensions and heavy-duty build, this roller is made for trailers carrying substantial weight. Ideal as a primary keel roller in the mid-section of the trailer where consistent contact is essential.
✅ Recommended If You:
- Own a large fibreglass or alloy boat
- Have a trailer with 25–26mm shaft setup
- Want a non-tapered roller with full contact surface
❌ Not Ideal If You:
- Have a V-shaped hull needing centering guidance
- Use 16mm or 19mm shaft systems
- Need lightweight trailer parts
A big roller for big jobs – this one doesn’t mess around.
🛞 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 |
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