Outer spherical ball bearing is actually the deep groove ball bearing a form, characteristic is its outer diameter for spherical surface, can match into the corresponding concave spherical bearing self-aligning effect.

Although its basic performance with deep groove ball bearings should be similar, but because of the bearing are mostly applied in mechanical rough, installation location is not accurate, the axis of the shaft with a hole to neutral, or under the condition of large axial length and deflection etc, and the bearing itself precision is not high, some structure is rough, so the performance of the actual performance comparison on the same specifications of the deep groove ball bearings to play quite a discount. For example, with the top wire of outer spherical ball bearing used in poor rigidity of large deflection of shaft, this kind of bearing with seals on both sides, can prevent dirt intrusion, closely factory has loade.