<p>A composite bearing cylinder (10) includes an inner bearing surface (12) having a resin matrix (14) with fumed silica therein and having a filament material (16) helically embedded in the resin matrix (14), a layer of the resin matrix (14) being located at the inner bearing surface (12), the fumed silica in the resin matrix (14) thereby contributing to the wear resistance of the inner bearing surface (12).</p>
