Air foil radial bearing and manufacturing method thereof

摘要

The present invention relates to an airfoil radial bearing supporting a load acting in a direction perpendicular to the axis of a rotation shaft, and a manufacturing method thereof. The airfoil radial bearing 100 of the present invention includes a bearing housing 110 in which a through hole 111 into which a rotation shaft is inserted, is inserted into the through hole, has a diameter smaller than the through hole, and has an insertion direction of the rotation shaft on an outer circumferential surface. A cylindrical top foil 120 having a slit-shaped opening portion 121 formed along the line, a single thin plate sheet 141 surrounding the outer surface of the top foil, and the thin plate so as to be positioned between the top foil and the thin plate sheet. A bump foil assembly 140 having a plurality of bump foils 142 attached to the inner side of the sheet, and an inward stepped jaw formed at one end of the through hole of the bearing housing to support the end of the top foil and bump foil assembly 112, a groove 122 formed on the outer circumferential surface of the top foil in the direction of insertion of the rotation shaft, a pin member 130 attached to the groove through bonding, and a pin member formed on an inner surface of the through hole of the bearing housing It includes a coupling groove (113).