... As their rollers linearly come into contact with inner ring and outer ring with coefficient of friction, these bearings have very ... , suitable for electric motors, automobiles, transmission shafts, gear shafts and so on. Double row cylindrical roller bearings are good at ... , mining, heavy-duty machinery, the spindles of machine tools and so on.SeriesBore diameter(mm)Variant structure220E10~220N.NF.NJ ...