Spherical bearings are also called spherical plain bearings, spherical ball bearings or ball bushes.

Self-aligning bearings can be roughly divided into four types of bearings: self-aligning ball bearings, self-aligning rolling bearings, self-aligning rod ends and self-aligning sliding bearings. Spherical bearings are specially designed to adapt to high misalignment and high load bearing applications. Such as hydraulic cylinder rod ends, vehicle steering linkage suspension and heavy equipment articulated joints.

The bearing assembly consists of a convex inner ring, a concave outer ring and a self-lubricating bearing with PTFE lining. The inner ring rotates at an angle within the outer ring, so the entire bearing supports both rotational and angular motion.    

XRL offers several spherical plain bearings:

https://www.xrlbearing.com/spherical-roller-bearings-product/

https://www.xrlbearing.com/self-aligning-ball-bearings-product/