... mechanical industry, like in various machinery such as metallurgic machinery,mining machinery,paper making machinery,texile machinery,etc.2.Types:spherical roller bearings ... and P5 precision grades according to customer's demands.All tolerance values conform to GB307.1standard.Radial Clearance ... bearings with C2,C0,C3,C4and C5 clearances,which all conform to the GB4604 standard.C3clearance is taken ...