Roller bearing : 1) ID :20mm- 2000mm 2) High precision and long life 3) 20 years manufacturer. 4) ISO9001:2000 .. Roller bearing :1) used in machine tools ,heavy-duty equipment , construction machinery, oil drilling , metallurgy machinery,Mine , sailing and facilities for frontiers of science2)ID Size is below 2000mm.Products NameRoller BearingBrandHQBPlace of originShandong,ChinaTypeLarge-size ...