Rolling mill bearing 1) ID:200-4000mm 2) High precision,long life 3) 20 years manufacturer 4) ISO9001:2000 certificate.. We are specialized in producing many kinds of bearings for more than 20 years ,the main products we manufacture are as following:taper roller bearings, spherical roller bearings , cylindrical roller bearings, slewing bearings, deep groove ball bearings, angular contact bearings ...