Characteristics of the bearing: the raceway of the outer ring is spherical, The inner ring has a double raceway and is self-aligning. It is able to adjust the error of the concentricity and shaft deflection, but the gradient between inner and outer ring is not allowed to exceed 3°.
There two constructions of bore diameter: cylindrical bore and taper bore. The angle of the taper bore 1:120, it can be installed on a rotating shaft or fixed on a cylindrical shaft with adaptor sleeve.
The bearing mainly sustains radial load, but due to the contact surtace between the steel balls and race track is very small, the load rating is low and life is short.