What is the difference between outer spherical bearing and deep groove ball bearing

What is the difference between outer spherical bearing and deep groove ball bearing
Outer spherical bearings are mainly used in places where equipment and parts are simple, and are often used in agricultural machinery, transportation system or construction machinery.
Deep groove ball bearing is the most common type of rolling bearing.
The basic deep groove ball bearing is composed of an outer ring, an inner ring, a group of steel balls and a group of steel balls.
The basic performance of the outer spherical bearing is similar to that of the deep groove ball bearing. However, because this kind of bearing is mostly used in rough machinery, the device positioning is not accurate enough, the axis of the shaft and the seat hole is not neutral, or the shaft is long and the deflection is large, and the precision of the bearing itself is not high enough, and some structures are also rough, Therefore, the practical performance of performance is quite discounted compared with the deep groove ball bearing of the same specification.