Specification of SJG&SJG bearing Spherical roller bearingFeatures:1)Tolerance:ABEC-1,ABEC-3,ABEC-5,ABEC-72)Vibration Level:V4,V3,V2,V13)Cage:Brass,Nylon,Steel4)Hardness:59-63 HRCApplication:Oil rig,the system of iron and steel machinery,hydroelectric generators,vertical motors,extruders,crane hooks,automobiles,machine tools,mechanical..