A method for manufacturing an annular member , the method comprising: providing a first restraining mold and a second restraining mold , each of which is formed in an annular shape, in an axial direction of a cylindrical member such that inner circumferential surfaces of the first restraining mold and the second restraining mold abut against an outer circumferential surface of the cylindrical member ; providing a third restraining mold and a fourth restraining mold , each of which is formed in an annular shape, such that outer circumferential surfaces of the third restraining mold and the fourth restraining mold abut against an inner circumferential surface of the cylindrical member at positions which respectively correspond to positions of the first restraining mold and the second restraining mold in the axial direction; providing a first roll fixed on an installation axis (A) that includes disc-shaped restricting portions (11b1, 11b2) and a columnar urging portion (11b3); providing a second roll that includes disc-shaped restricting portions (12b1, 12b2) and a disc-shaped urging portion (12b3) that abuts against an outer surface of the first restraining mold and has a gap from an outer surface of the second restraining mold ; rotating each of the cylindrical member , a mandrel that abuts an inner circumferential surface of the fourth restraining mold , and the first and second rolls ; move the second roll along said installation axis (A), thereby applying a shear force that shifts a portion of the cylindrical member abutting the second restraining mold and the fourth restraining mold by urging the first restraining mold with the disc-shaped urging portion; so as to cut and separate the cylindrical member . providing a first restraining mold and a second restraining mold , each of which is formed in an annular shape, in an axial direction of a cylindrical member such that inner circumferential surfaces of the first restraining mold and the second restraining mold abut against an outer circumferential surface of the cylindrical member ; providing a third restraining mold and a fourth restraining mold , each of which is formed in an annular shape, such that outer circumferential surfaces of the third restraining mold and the fourth restraining mold abut against an inner circumferential surface of the cylindrical member at positions which respectively correspond to positions of the first restraining mold and the second restraining mold in the axial direction; providing a first roll fixed on an installation axis (A) that includes disc-shaped restricting portions (11b1, 11b2) and a columnar urging portion (11b3); providing a second roll that includes disc-shaped restricting portions (12b1, 12b2) and a disc-shaped urging portion (12b3) that abuts against an outer surface of the first restraining mold and has a gap from an outer surface of the second restraining mold ; rotating each of the cylindrical member , a mandrel that abuts an inner circumferential surface of the fourth restraining mold , and the first and second rolls ; move the second roll along said installation axis (A), thereby applying a shear force that shifts a portion of the cylindrical member abutting the second restraining mold and the fourth restraining mold by urging the first restraining mold with the disc-shaped urging portion; so as to cut and separate the cylindrical member . <EOS>