Abstract: The invention refers to a ball joint comprising a ball with an attached arm, a proximal shell having a wear surface, and a distal shell having a wear surface and having an opening for passage of the arm. The ball is held between the wear surface of the proximal shell and the wear surface of the distal shell, while the arm is passed through the opening in the distal shell. Furthermore, the ball joint comprises a biasing element by which the proximal shell and the distal shell are biased with a force towards each other, wherein the biasing element is adjustable in order to adjust the force with which the proximal shell and the distal shell are biased towards each other.

Abstract: A method for manufacturing a joint. A ball is mounted on a pin. Spherical surfaces on at least two socket parts are machined. Grinding paste is applied on the ball and/or on the surfaces of the socket parts. The pin is connected to an equipment that rotates the ball. The ball is assembled between the socket parts. A pressure is applied between the socket parts and the ball. The ball is rotated and tilted over the working range of the joint. The ball and the socket parts are cleaned from the grinding paste. The joint is assembled by mounting the socket parts on a ball. A robot obtainable with the method.

Abstract: The invention relates to a joint having a male unit and a female unit. The external surface of the male unit is of complementary shape to the internal surface of the female unit. The units cooperate and have shapes allowing rotational movement in at least one degree of freedom of the male unit within the female unit. The female unit has two socket parts. According to the invention biasing means is provided for biasing each of the socket parts towards the male unit.