Gyration-type crusher

This gyratory crusher is provided with: a main shaft that is disposed rotatably inside a concavity and that rotates eccentrically with the central axis of the main shaft at an incline to the central axis of the concavity; an upper bearing that rotatably supports an upper end section of the main shaft; a lower bearing that rotatably supports a lower end section of the main shaft; and a hydraulic cylinder that causes the main shaft to move vertically through oil pressure. The lower bearing is provided with an eccentric sleeve that has a main shaft fitting-insertion hole into which the lower end section of the main shaft is inserted to fit rotatably, and an outer cylinder that has an eccentric sleeve fitting-insertion hole into which the eccentric sleeve is inserted to fit rotatably. At least one of an inner peripheral surface of the main shaft fitting-insertion hole, an outer peripheral surface of the eccentric sleeve, and an inner peripheral surface of the eccentric sleeve fitting-insertion hole has a tapered shape in at least a partial region thereof in the axial direction such that the distance from a surface that such tapered shape faces becomes greater as the tapered shape progresses upward.