Multi-piece rollers for a conveyor belt. First and second roller sections fit together to form a complete roller. The two roller sections together define a bore for receiving an axle. The bore and the periphery of the roller are formed in part by each of the first and second roller sections. The roller is assembled by sliding the two sections together in a direction perpendicular to the axle with the bore closing around the axle. The roller sections have fingers that interdigitate with each other to prevent axial separation of the first and second roller sections. The interdigitated fingers surround a majority of the bore.