Boat Trailer 8″ Blue Poly Self-Centering Roller – 17mm Bore – Non-Marking (SKU: SCBB200X17)

The 8″ Blue Self-Centering Polyethylene Roller (SKU: SCBB200X17) is the smart choice for small to medium-sized trailers using a 17mm shaft. Designed for fibreglass and aluminium hulls, this roller offers firm support and smooth alignment, helping your boat glide effortlessly onto your trailer.

The self-centering shape ensures proper hull positioning every time, minimizing side drift during loading. Its non-marking polyethylene construction keeps your hull clean and protected from scuffs or rubber stains—perfect for maintaining that showroom shine.

Whether you’re replacing an old rubber roller or fitting a new trailer, this tough blue beauty is built to last. With UV-resistant material and high tolerance to marine conditions, it’s ideal for both saltwater and freshwater environments.

FAQ

• Q: What’s the difference between 17mm and 21mm bore?
  A: This model fits a 17mm shaft, ideal for smaller or older trailers. If your shaft is 21mm, choose a different model.
• Q: Will this work with a fibreglass hull?
  A: Yes, the non-marking material is safe for fibreglass and aluminium boats alike.
• Q: Does the roller include the shaft or bracket?
  A: No, this listing is for the roller only. You’ll need to supply your own bracket and shaft.
• Q: Is it okay for saltwater use?
  A: Absolutely! Polyethylene is highly resistant to salt and UV damage.

Evaluation & Recommendation

Recommended for:

• Boaters using older trailers with 17mm shaft brackets.
• Owners of small to mid-size fibreglass or aluminium boats.
• DIY trailer builders who need reliable and non-marking keel rollers.

Not ideal for:

• Heavy-duty trailers with large boats—consider 21mm bore or reinforced rollers.
• Users needing soft-contact rollers for delicate hulls—look into red poly options.

Installation Tips:

1. Check shaft diameter (should be 17mm) before removing old roller.
2. Slide roller onto the shaft and align center properly.
3. Secure with washers and locking hardware to prevent sideways shift.
4. Test spin to ensure free and centered movement before launching.