A conveyer apparatus according to the present invention includes a case that defines a pair of right and left gap portions each of which has a predetermined width and extends in a conveying direction of a conveyance object, a conveyer that is arranged near or in a region adjacent to each of the pair of right and left gap portions and supported by the case to support and convey the conveyance object, a driving mechanism that is arranged in an internal space of the case to drive each conveyer, and sucking means for sucking air in the internal space. According to this configuration, when the sucking means sucks air in the internal space in the case, an air current flowing into the internal space from the outside through each gap portion is produced, and an abrasion powder or dust generated near, e.g., each conveyer arranged near under each gap portion flows with this air current to be sucked, thus avoiding scattering toward the outside.