... precision,low noise,high speed 3.High Qualtity Four row large sized tapered roller bearings O(∩_∩)O~ Product name: tapered roller ... : copper cage, nylon retainer, steel retainer, Bakelite retainer, etcQuality standard: ISO9001-2000Low noise, high speed, long life302 series, 303 series. 313 ... LM274010-LM2740010D508×695.325×419.925464Company related pictures: Four row large sized tapered roller bearings