A manufacturing method for a bearing device for a wheel, the bearing device comprising: an outer member having double-row outer raceway surfaces formed on an inner circumference thereof; an inner member comprising: a hub wheel having a wheel mounting flange formed thereon; and at least one inner race fitted to a small-diameter step portion formed on an outer circumference of the hub wheel, the inner member having double-row inner raceway surfaces formed thereon so as to be opposed to the double-row outer raceway surfaces; and a plurality of rolling elements assembled into spaces between the double-row outer raceway surfaces and the double-row inner raceway surfaces, the at least one inner race being fixed in an axial direction thereof by a staked portion formed by plastically deforming an end portion of the small-diameter step portion of the hub wheel radially outward, the staked portion having a face spline formed on an end surface thereof by plastic working, the manufacturing method being characterized by forming the staked portion and forming the face spline in one step while satisfying the following relationship: S / M ≤ α × β where M represents a mean diameter of an outer diameter and an inner diameter of the end portion of the small-diameter step portion before the forming of the staked portion, S represents an outer diameter of the face spline after the forming of the staked portion, α represents a value indicating ductile elongation of a material for the hub wheel in terms of proportion, and β represents a correction coefficient depending on a type of process, wherein the forming of the staked portion and the forming of the face spline comprise orbital forming, and wherein the correction coefficient β depending on a type of process is set to 1.15. an outer member having double-row outer raceway surfaces formed on an inner circumference thereof; an inner member comprising: a hub wheel having a wheel mounting flange formed thereon; and at least one inner race fitted to a small-diameter step portion formed on an outer circumference of the hub wheel, the inner member having double-row inner raceway surfaces formed thereon so as to be opposed to the double-row outer raceway surfaces; and a hub wheel having a wheel mounting flange formed thereon; and at least one inner race fitted to a small-diameter step portion formed on an outer circumference of the hub wheel, the inner member having double-row inner raceway surfaces formed thereon so as to be opposed to the double-row outer raceway surfaces; and a plurality of rolling elements assembled into spaces between the double-row outer raceway surfaces and the double-row inner raceway surfaces, the at least one inner race being fixed in an axial direction thereof by a staked portion formed by plastically deforming an end portion of the small-diameter step portion of the hub wheel radially outward, the staked portion having a face spline formed on an end surface thereof by plastic working, the manufacturing method being characterized by forming the staked portion and forming the face spline in one step while satisfying the following relationship: S / M ≤ α × β where M represents a mean diameter of an outer diameter and an inner diameter of the end portion of the small-diameter step portion before the forming of the staked portion, S represents an outer diameter of the face spline after the forming of the staked portion, α represents a value indicating ductile elongation of a material for the hub wheel in terms of proportion, and β represents a correction coefficient depending on a type of process, wherein the forming of the staked portion and the forming of the face spline comprise orbital forming, and wherein the correction coefficient β depending on a type of process is set to 1.15.