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Can bear radial load and axial load at the same time, high speed, the greater the contact Angle, the higher the axial bearing capacity. Single bearing can only carry axial load in one direction, when bear radial load, will cause the additional axial force.And only limit shaft or shell axial displacement in one direction.If double installed in pairs, make a pair of bearing outer ring relative, namely the wide end facing the wide end face, the narrow end face the narrow end.This can avoid the additional axial force, but also can be in two directions the shaft or shell limits in the range of the axial clearance.Angular contact ball bearing of variant structure with as many as 70. 1, the name of the contact Angle is 15 °, 25 °, 40 ° three, the larger the contact Angle of the axial bearing capacity is higher.High precision and high speed bearing usually take 15 ° contact Angle, under the effect of axial force, the contact Angle increases. 2, generally for the inner ring or outer ring lock mouth, inner and outer ring is inseparable.Outer ring after the heat expansion and inner ring, rolling element and cage assembly components.To count more than deep groove ball bearings, the rated load in the ball bearing is the largest, strong rigidity, smooth operation. 3, can take advantage of the inner and outer mutual displacement radial clearance adjustment.Often used in pairs, and exerted load, in order to improve the bearing rigidity