Boat Trailer Side Roller 70 x 70 mm – 17 mm Bore, Compact Support for Small Boats

The 70 x 70 mm side roller is a compact solution for small trailers and boats. With a diameter of 70 mm and a width of 70 mm, it’s suitable for supporting the sides of light boats – for example, inflatable boats, small fishing dinghies, or personal watercraft (jet skis). The small diameter allows this roller to fit into tight spaces while still providing necessary support and contact with the hull. It mounts on a standard 17 mm shaft/bolt, making it compatible with most small boat trailers.

This model comes in a black rubber variant. The rubber construction offers good elasticity – the roller can flex slightly to match the hull’s shape and absorb vibrations during travel. The natural grip of the rubber helps hold the boat steady without slipping. The roller is built to withstand the elements: the rubber is UV-resistant and water-resistant, preventing quick aging or hardening over time.

In use, the 70x70 mm roller installs on the trailer frame, typically in pairs on either side of the boat. It supports the hull by preventing it from tilting to one side during loading or towing. Due to its compact size, this roller is an excellent choice for providing additional support – you can add it to an existing trailer setup to improve boat stability, especially if you notice areas of the hull that need extra cushioning.

Use Cases and Recommendations:

• Perfect for small boats (approximately up to 3–4 meters long) and light-duty trailers where larger rollers can’t fit
• Great for supporting inflatable boats, small fishing boats, or jet skis – the rubber roller will not damage delicate hull materials
• Can be used as an auxiliary roller to reinforce support in a trailer that already has larger rollers; install it at any point where the hull could benefit from extra cushioning
• Inspect the roller regularly – even though it’s small, it bears load; ensure it spins freely and the rubber is crack-free to guarantee safe transport of your boat