Patent ID: 8763255

Claim:
A manufacturing method for a wheel rolling bearing device that includes a shaft member that has: a shaft portion that has an outer peripheral surface on which a first inner ring raceway surface is formed; a fitting shaft portion formed on one end side of the shaft portion so as to be coaxial with the shaft portion; and a flange located between the shaft portion and the fitting shaft portion so as to extend radially outward, the method comprising: forming the shaft portion in a solid columnar shape; forming the first inner ring raceway surface on a portion of the outer peripheral surface of the shaft portion, which is in proximity to the flange; fitting an outer ring, which has an inner peripheral surface on which a first outer ring raceway surface and a second outer ring raceway surface are formed, to the shaft portion, and disposing a plurality of first rolling elements between the first inner ring raceway surface and the first outer ring raceway surface; fitting an inner ring, which has an outer peripheral surface on which a second inner ring raceway surface is formed, to the shaft portion, and disposing a plurality of second rolling elements between the second inner ring raceway surface and the second outer ring raceway surface; and pressing a clinching jig against an end portion of the shaft portion that has a solid columnar shape, that is at the other end side of the shaft portion, and that protrudes from the inner ring, and oscillating the clinching jig while pressing the clinching jig toward the one end side of the shaft portion to thereby increase a diameter of the end portion of the shaft portion to clinch the end portion of the shaft portion, so as to form the end of the clinched portion into an entirely planar shape.