Abstract: The invention relates to a device for controlling material comprising a sensor device and a lighting device, whereby the material which is to be controlled is guided on a transparent drum.
Abstract: The invention relates to a screening machine comprising a frame and two bearing arrangements which are arranged thereon for the rotational positioning of a screening cylinder, whereby the bearing arrangements comprise rings which are rotationally driven around a common axis and which support catches on the sides opposite to each other. In order to enable the head piece of the screening cylinder to be mounted on the ring, said catches can be positioned on one half of the periphery thereof.