Abstract: A roller conveyor comprising a driven section (18) freely rotatably mounted on one end of a roller shaft (16) a sleeve member freely rotatably mounted on the same one end through a bearing device (31), a roller body (24) freely rotatably fitted on the driven section (18) and the other end of the roller shaft (16), the sleeve member (19) being provided with a flexible body (26) adapted to contact the inner surface (24a) of the roller body (24) when contracted and to press against the inner surface (24a) and driven section (18) when expanded, and a fluid feed and delivery passage which opens to the interior of the flexible body (26) and which extends from the roller shaft 16 to the sleeve member (19). Thus, when the flexible body is expanded to press against the inner surface of the roller body and the driven section, the torque in the driven section can be transmitted to the roller body through the flexible body, thereby causing the forced rotation of the roller body.