Wear-resistant roller

The invention discloses a wear-resistant roller. The wear-resistant roller comprises an outer barrel body; supporting rings are welded in the outer barrel body; an inner barrel body is welded at innercircles of the supporting rings; blind plates are welded in the inner barrel body; end covers are fit with the edge of the outer barrel body and are symmetrically arranged at the two ends of the outer barrel body; the end covers are connected with an outer circle of a flange ring through fillers; bolt holes C are formed in the end covers; bolt holes D are formed in the flange ring; the bolt holesC correspond to the bolt holes D; and the bolt holes C and the bolt holes D have identical inner threads. With the adoption of a bolt connection mode, the outer barrel body, a rear shaft and a frontshaft are mounted, and when the outer barrel body which is a quick-wear part is required to be replaced, simply the outer barrel body and the inner barrel body are replaced independently, so that thesubsequent maintenance cost