Outer spherical ball bearing deep groove ball bearing is actually a variant, is characterized by its outer diameter surface of the sphere, can be allocated into the corresponding concave spherical bearing in mind the role played tune.

Although its basic properties and deep groove ball bearing is similar, but because most of these bearings used in rough machinery, installation and positioning is not accurate enough, shaft and hole axis on the neutral difference, or axial length and large deflection and other conditions, and the bearing precision is not high, some the structure also more rough, therefore the performance of actual performance compared to the same specifications of deep groove ball bearings to make considerable discount. For example, silk top with outer spherical ball bearing used in poor stiffness deflection through shaft, with both sides of this bearing ring, can prevent dirt intrusion, the factory had filled with just the right amount of lubricant, before installation without cleaning, do not need to add lubricant, the bearing inner ring projecting end top screw in shaft on the fastening. Allow axial load shall not exceed the rated dynamic load20%.