A swivel bearing assembly consists of an outer housing, a ball and a
shaft, a cover, and ball bearings, wherein a free-zone channel.A
free-zone channel allows the ball bearings to roll freely in the assembly
as they follow the motion of the ball and shaft. The ball bearings
eliminate friction between ball and outer housing. The ball and shaft can
have simultaneous rotational and angular motion. Only unidirectional load
can be applied to the bearing in the direction of the mounting surface.