Carrier roller Top roller,upper roller for Caterpillar, Komatsu, Hitachi, Kobelco, Mitsubishi, Sumitomo,Daewoo, ... is successfully certified with TS16949 and ISO9001/2000 quality control system. With more then ten years' ... 3, EX300-1-3-5, EX400, UH08, UH07 3) Caterpillar: E110B, E200B (E320), E240 (MS180), E300B, E330, D3C ... MS110, MS120, MS180 9) Samsung: SE55, SE210 High quality carrier roller R200