The invention relates to a roller component, in particular to a roller component for a circular furnace and belongs to the technical field of circular furnaces. The roller component a roller shaft and a roller body; a first shaft sleeve is welded to the left end of the roller shaft; the outer surface of the first shaft sleeve is provided with a key groove in which a key is slidably connected; a packing gland is connected to the key through a screw; a second shaft sleeve is welded to an outer circle of the packing gland; the outer circle of the second shaft sleeve is connected to the roller body by welding; a shaft stop is connected to the right end of the roller shaft; the inner side of the shaft stop is limited by a shoulder of the roller shaft; the outer side of the shaft stop is limited by a cylindrical pin connected to the roller shaft; the shaft stop is connected with the roller body by welding. A plurality of connector components are evenly arranged in the middle of the roller shaft in the lengthwise direction and located within the roller body. The roller component is simple, compact and reasonable in structure; two ends of the roller shaft are well protected, the service life of the roller component is prolonged, and maintenance cost is lowered.