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Four row circular cone roller bearings by two double row inner ring and a double row of outer ring and two single outer ring, between the inner ring with an inner circle, has two septum between three outer ring can adjust the clearance.Four row circular cone roller bearings for small to medium size are made of bearing just big four row circular cone roller bearings use carburizing steel manufacturing, particularly using hollow roller and the size of the pillars of cage, in order to increase the service life of bearing.Maintains a materialFour row circular cone roller bearings generally adopts the stamping steel cage, especially the pillar of the large size of the cage must be welded type.Allow the Angle alignment errorFour row circular cone roller bearings are generally not allowed axial have inclined to shell, such as with sloping biggest less than 2 ". As a result of the production process requirement, as four row tapered roller bearing of the bearing force of bending roll and axis tilted more than 2 "requirements of bearing roller and race will generate additional stress, the increased bearing load will shorten the service life of bearing.