Abstract: The invention relates to a method for producing a device for material exchange between two mediums, in which at least one mat of semipermeable hollow fibres (3) is wound onto a winding core (2), which has at least one core opening (2a) in its outer surface for a first in- or out-flowing medium, and the winding core (2) is arranged in an axially extending housing (1) having at least one housing opening (1a) for the first in- or out-flowing medium and the axial end regions of the housing (1) are sealed by an adhesive (4) arranged around the hollow fibres (3), wherein at least one chamber region (5) surrounding the hollow fibres (3) is formed via the adhesion between the axial end regions (1b, 1c) of the housing (1) and between the winding core (2) and the housing (1), through which chamber region the first medium can flow via the core opening (2a) and the housing opening (1a), wherein the axial distance between the core opening (2a) and the housing opening (1a) is adjusted to a desired value of multiple possibl

Abstract: Disclosed is a cylindrical roller bearing for absorbing axial and radial forces. The roller bearing includes a first bearing ring and a second bearing ring, which are arranged concentrically about an axis of rotation extending in an axial direction. The second bearing ring has a groove, which is open in a radial direction and in which a projection of the first bearing ring engages. The roller bearing further includes a first radial bearing row and two axial bearing rows spaced in the axial direction that are arranged between the projection and the groove, wherein the first radial bearing row supports the first bearing ring against the second bearing ring in a first radial direction. The roller bearing also includes a second radial bearing row that supports the first bearing ring against the second bearing ring in a second radial direction that is opposite to the first radial direction.

Abstract: The invention relates to a cylindrical roller bearing for absorbing axial and radial forces, comprising a first bearing ring and a second bearing ring, which are arranged concentrically about an axis of rotation extending in the axial direction (x), wherein the second bearing ring has a groove, which is open in a radial direction and in which a projection of the first bearing ring engages, wherein a first radial bearing row and two axial bearing rows spaced in the axial direction are arranged between the projection and the groove, wherein the first radial bearing row supports the first bearing ring against the second bearing ring in a first radial direction and wherein a second radial bearing row is provided, which supports the first bearing ring against the second bearing ring in a second radial direction that is opposite to the first radial direction.