Abstract: A new rotary cleaning device especially suited for cleaning dirt and debris from conveyors consists of one or more pluralities of T-shaped members mounted around a central mandrel with the cross-bars touching the mandrel exterior surface and providing respective circumferentially-extending shoulders spaced from the mandrel face. The mandrel is provided with radially-extending apertured plates between which the T-shaped members extend, the plate apertures receiving retainer bars which engage the shoulders of the T-shaped members. The assembly is locked together by axially movable wedges inserted between each retainer bar and the edge of the aperture through which the bar passes. Preferably the cleaner members are integral T-shaped pieces of resilient material, such as neoprene. Each wedge has a step face to determine its maximum insertion into the respective aperture.