Abstract: A filter element is provided with a filter medium body that is a folded filter of filter paper. The filter medium body has an inflow side and an outflow side. A sealing element is arranged on the filter medium body. At an end edge face, the filter medium body has an adhesive bead filling at least partially intermediate fold spaces at end edges of the folds. The filter medium body has a lateral band adhesively connected to and covering the end edge face positioned at an angle relative to the inflow and outflow sides. The lateral band is connected to end edges of the folds at the end edge face and extends all the way to the inflow and outflow sides. The lateral band has at least one leg resting on the inflow side or the outflow side adjacent to a rim area of the filter medium body.

Abstract: A filter element is provided with a filter medium body that is a folded filter of filter paper. The filter medium body has an inflow side and an outflow side. A sealing element is arranged on the filter medium body. At an end edge face, the filter medium body has an adhesive bead filling at least partially intermediate fold spaces at end edges of the folds. The filter medium body has a lateral band adhesively connected to and covering the end edge face positioned at an angle relative to the inflow and outflow sides. The lateral band is connected to end edges of the folds at the end edge face and extends all the way to the inflow and outflow sides. The lateral band has at least one leg resting on the inflow side or the outflow side adjacent to a rim area of the filter medium body.

Abstract: A filter element (1) for an air filter (30) has a tubular filter medium (2), the annular cross-section of which encloses an interior (6) of the filter element and which has an inner wall (7) that adjoins the interior of the filter element and that extends in the form of at least one convex arch (8) and at least two concave arches (9), the concave arch (9) being located between two convex arches (8) such that the interior (6) of the filter element has a constriction (11) in the area of the concave arch (9), the constriction (11) being adjoined by two wide zones (12) of the interior of the filter element.

Abstract: A filter insert has a filter element with an end surface at an inlet side and an end surface at an outlet side that are spaced from one another in a main flow direction of the filter insert. A frame circumferentially extends about lateral sides of the filter element. An axial seal is supported on the frame and has a sealing direction in or opposite to the main flow direction. When inserted into a filter housing and contacting a sealing surface of the filter housing, the seal separates seal-tightly the inlet and outlet. The frame has on two opposite lateral sides of the filter element contact surfaces for clamping the filter insert by matching clamping elements. The contact surfaces are oriented opposite to the sealing direction and each have an individual profile of varying height extending along the two opposite lateral sides.

Abstract: A filter housing (10) having a raw-side inlet (12) and a clean-side outlet (14) for media to be filtered and a forward-mounted part designed as a cyclone pre-separator (20) including at least one fastening region (32) of a first part (30) made substantially of plastic is fastened to the raw side, and a second part (40) braced between the first part (30) and the filter housing (10). The fastening region (32) of the first part (30) is screwed to the filter housing (10) using metal fastening elements (50, 54, 56, 60), and—at the upper side facing away from the filter housing (10) it has at least one pressing contour (70) for compensating for at least one dimension tolerance of the elements fastened together. The contour is substantially plastic material, which can be deformed by means of applying a force generated by the screwing together of the metal fastening elements (50, 52, 56, 60), in particular which can be melted.

Abstract: An air filter system (30) includes a filter housing (10) with a filter element (1) received within the housing. A secondary housing is secured to and closing the filter housing. The secondary housing includes a locking element operable to engage the filter housing and the filter element. The filter element (1) includes at least one fastening element (7) wherein the locking element (22) of the secondary housing (20) engages the at least one fastening element (7) in such a way, when the filter element (1) is accommodated in the filter housing (10) and is disposed between the filter housing (10) and the secondary housing (20), that the secondary housing (20) is detachably clamped to the filter housing (10).

Abstract: A filter element (1) for an air filter (30) has a tubular filter medium (2), the annular cross-section of which encloses an interior (6) of the filter element and which has an inner wall (7) that adjoins the interior of the filter element and that extends in the form of at least one convex arch (8) and at least two concave arches (9), the concave arch (9) being located between two convex arches (8) such that the interior (6) of the filter element has a constriction (11) in the area of the concave arch (9), the constriction (11) being adjoined by two wide zones (12) of the interior of the filter element.

Abstract: An air filter system (30) includes a filter housing (10) with a filter element (1) received within the housing. A secondary housing is secured to and closing the filter housing. The secondary housing includes a locking element operable to engage the filter housing and the filter element. The filter element (1) includes at least one fastening element (7) wherein the locking element (22) of the secondary housing (20) engages the at least one fastening element (7) in such a way, when the filter element (1) is accommodated in the filter housing (10) and is disposed between the filter housing (10) and the secondary housing (20), that the secondary housing (20) is detachably clamped to the filter housing (10).

Abstract: A filter insert has a filter element with an end surface at an inlet side and an end surface at an outlet side that are spaced from one another in a main flow direction of the filter insert. A frame circumferentially extends about lateral sides of the filter element. An axial seal is supported on the frame and has a sealing direction in or opposite to the main flow direction. When inserted into a filter housing and contacting a sealing surface of the filter housing, the seal separates seal-tightly the inlet and outlet. The frame has on two opposite lateral sides of the filter element contact surfaces for clamping the filter insert by matching clamping elements. The contact surfaces are oriented opposite to the sealing direction and each have an individual profile of varying height extending along the two opposite lateral sides.

Abstract: A filter housing (10) having a raw-side inlet (12) and a clean-side outlet (14) for media to be filtered and a forward-mounted part designed as a cyclone pre-separator (20) including at least one fastening region (32) of a first part (30) made substantially of plastic is fastened to the raw side, and a second part (40) braced between the first part (30) and the filter housing (10). The fastening region (32) of the first part (30) is screwed to the filter housing (10) using metal fastening elements (50, 54, 56, 60), and—at the upper side facing away from the filter housing (10) it has at least one pressing contour (70) for compensating for at least one dimension tolerance of the elements fastened together. The contour is substantially plastic material, which can be deformed by means of applying a force generated by the screwing together of the metal fastening elements (50, 52, 56, 60), in particular which can be melted.

Abstract: A filter insert has a filter element with an end surface at an inlet side and an end surface at an outlet side that are spaced from one another in a main flow direction of the filter insert. A frame circumferentially extends about lateral sides of the filter element. An axial seal is supported on the frame and has a sealing direction in or opposite to the main flow direction. When inserted into a filter housing and contacting a sealing surface of the filter housing, the seal separates seal-tightly the inlet and outlet. The frame has on two opposite lateral sides of the filter element contact surfaces for clamping the filter insert by matching clamping elements. The contact surfaces are oriented opposite to the sealing direction and each have an individual profile of varying height extending along the two opposite lateral sides.