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1, bearing radial load
The first to accept the radial load ina bearings for radial bearing. Nominal contact the bearing angle A0 >=450. The radial load bearing size communication than ball bearings can accept more.
N type and NU type cylindrical roller bearings can only accept the radial load, radial bearing other types can accept the radial load, also can accept the axial load.

2 of axial load, bearing
The first to accept the axial load bearing ina popular for thrust bearing, the nominal contact corner a0>450. The axial thrust bearing and thrust angular contact ball bearings for structural differences can also accept one or two tendencies.
In the radial load bearing, ina will have an effect on the axial force, the general should bear by second bearings.
Two single row angular contact ball bearings or two tapered roller bearings back to back or face bearing configuration surface composition, each bearing must axial force from another bearing. Two bearing phase at the same time, the central role of radial load on the two bearing, if the bearing arrangement is adjusted to zero clearance, half part to bear load can automatically achieve load distribution. We should remember the rigidity is affected not only by the elastic bearing, but also affected the shaft and bearings, INA Bearing ring elastic mounting and stress field in all other components include bearing elastic deformation. Have a considerable impact of these factors on the shaft system with elastic.