FOIL BEARING, TURBO MACHINE, AND FOIL HOLDER

摘要

This foil bearing (10) comprises: a plurality of foils (12) having a bearing surface; and a foil holder (11) forming a cylindrical shape and having a plurality of grooves (11c) on the inner circumferential surface thereof. A circumferential direction end section (protruding section (12d)) of each foil (12) is inserted into the grooves (11c) in the foil holder (11). On the outer circumferential surface of this foil holder (11), a large diameter section (11a) and a small diameter section (11b) are alternately provided in the circumferential direction and the grooves (11c) are provided inside the circumferential direction area of the large diameter section (11a).