Tobacco rod manufacturing apparatus

An apparatus is provided for forming tobacco rod portions of a smoking article. A conveyor unit is configured to receive a continuous stream of the tobacco material and to transport the continuous tobacco material stream along an elongate path for formation of the continuous tobacco material stream into a continuous tobacco rod, wherein the conveyor unit is housed in a conveyor housing. A suction system is in fluid communication with the conveyor housing through a suction port and is configured to apply suction to the conveyor housing via the suction port so as to draw the continuous tobacco stream into engagement with the conveyor unit. A wear resistant member is engaged with a wall of the conveyor housing and defines the suction port, wherein the wear resistant member is configured to resist wear from interaction with particles associated with the tobacco material.