Keel rollers, wobble rollers and bow stops for boat trailers.
The rollers carry the hull as the boat is launched and recovered. They wear from the weight and from the grit that comes up with the water.
How to choose a roller
Match the roller size and the bore, which is the hole the shaft runs through. Both are given in the product name, for example 205x98 with a 16 mm bore. The bore has to match the shaft the roller runs on.
Keel and wobble rollers
A keel roller sits under the centreline and takes the weight. A wobble roller pivots and supports the hull to the side, which lets it follow the shape as the boat moves.
Boat trailer parts
Boat trailers meet water and road salt, so see also wheel bearings and hub seals, which take the worst of it.
