In an automobile, ball joints are spherical bearings that connect the control arms to the steering knuckles. They are used on virtually every automobile made and work similarly to the ball-and-socket design of the human hip joint. A ball joint consists of a bearing stud and socket enclosed in a casing; all these parts are made of steel. The bearing stud is tapered and threaded, and it fits into a tapered hole in the steering knuckle.
Ball joints are spherical bearings that combine the control arms and steering knuckles in a car. They function similarly to the ball-and-socket hip joint and are found on almost every car ever produced. All the components of a ball joint are constructed of steel and include a bearing stud, a socket, and a casing. The steering knuckle's tapered hole accepts the threaded and tapered bearing stud.
