Stirring or dispersing device

A stirring or dispersing device (1), having a hermetically sealed mixing chamber (5), a tool (2), and a drive mechanism (4) located outside of the mixing chamber (5), wherein the tool (2) can be driven around a central shaft in the mixing chamber (5) and has a rod-shaped element (3) for force transmission from the drive mechanism (4) to the tool (2), wherein the rod-shaped element (3) is connected at the entry to the mixing chamber (5) with a diaphragm (6), which is a part of a wall (7) of the mixing chamber (5), and wherein the rod-shaped element (3) can be put into a wobbling movement by the drive mechanism (4), so that its end located in the interior of the mixing chamber (5) performs a rotating movement, characterized in that the tool comprises a number of grinding elements (22) or balls to be introduced into the mixing chamber (5) and wherein the stirring or dispersing device is further characterized in that, with its end facing the drive mechanism (4), the rod-shaped element (3) loosely engages an eccentric area of the rotating portion of the drive mechanism (4).