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: The present invention relates to a valve block, for at least one valve, in particular a slip-in valve having at least one cavity for receiving the valve; a first opening for inlet of a fluid and a second opening for outlet of the fluid, wherein the openings open into the cavity; a mounting area in which the openings are provided; and a collar for securing the valve, which collar extends at least in sections around the cavity, wherein the collar integrally formed with the valve block by primary shaping, in particular injection molding or die casting.

Abstract: The invention relates to a hydraulic tank (10) for storing a hydraulic liquid, comprising a one-piece tank housing (12) which forms a plastic hollow body and is manufactured by a rotational moulding process, wherein the tank housing (12) comprises at least one connection opening (92, 94, 126) at which is arranged a connection element (100, 110, 132) that is releasably connectable to a hydraulic conduit. In order to enable the hydraulic tank to be more cost-effective to produce, the connection element (100, 110, 132) comprises a plastic body which is manufactured by an injection moulding process and is welded together with the tank housing (12). Furthermore, a method for manufacturing a hydraulic tank (10) is proposed.

Abstract: The invention relates to a hydraulic tank (10) for storing a hydraulic liquid, comprising a one-piece tank housing (12) which forms a plastic hollow body and is manufactured by a rotational moulding process, wherein the tank housing (12) comprises at least one connection opening (92, 94, 126) at which is arranged a connection element (100, 110, 132) that is releasably connectable to a hydraulic conduit. In order to enable the hydraulic tank to be more cost-effective to produce, the connection element (100, 110, 132) comprises a plastic body which is manufactured by an injection moulding process and is welded together with the tank housing (12). Furthermore, a method for manufacturing a hydraulic tank (10) is proposed.