Abstract: The present invention relates to a filter element for the filtration of fluids, in particular hydraulic oil, having at least one end plate and a filter material which has a hollow-cylindrical shape and is connected to the end plate at an end face, wherein the end plate is designed to transmit a torque to a housing part, in particular a filter cover and/or a filter pot, of a filter device, wherein the end plate has at least one form-fitting element for receiving a torque and at least one transmission region for transmitting the torque to the housing part. The invention also relates to a filter device, an arrangement and an assembly method.

Abstract: An arrangement includes a filter element for filtering a liquid, in particular hydraulic oil, and at least one charge absorption element for receiving electrically charged particles of the liquid. The filter element and the charge absorption element are electrically conductive, and the filter element has at least one filter layer with a filter layer surface. The filter layer surface and the charge absorption element can be passed through by the liquid and a charge separation takes place at the filter layer surface as the liquid flows through. The charge absorption element is electrically connected to the filter element such that during operation the charge separation is equalized between the charge absorption element and the filter layer surface. The charge absorption element is connected downstream of the filter element in the direction of flow. A filter device, a tank system and a method for charge equalization are also provided.

Abstract: The present invention relates to a filter element for the filtration of fluids, in particular hydraulic oil, having at least one end plate and a filter material which has a hollow-cylindrical shape and is connected to the end plate at an end face, wherein the end plate is designed to transmit a torque to a housing part, in particular a filter cover and/or a filter pot, of a filter device, wherein the end plate has at least one form-fitting element for receiving a torque and at least one transmission region for transmitting the torque to the housing part. The invention also relates to a filter device, an arrangement and an assembly method.