Turbocharger compressor wheel assembly

A method of loading a rotating assembly of a turbocharger, the method comprising:

• positioning a swage collar on an end portion of a turbocharger shaft that extends through an axial through bore of a compressor wheel, wherein the compressor wheel comprises a nose end, a base end, a plurality of blades, and a plurality of seating surfaces at corresponding axial positions located between an axial position of the nose end and an axial position of the base end and at corresponding radial positions greater than a maximum radius of the swage collar;
• applying a pushing force to one or more of the seating surfaces of the compressor wheel with one or more force applicators while applying a pulling force to the end portion of the turbocharger shaft to compress the compressor wheel between the one or more seating surfaces of the compressor wheel and the base end of the compressor wheel;
• controlling loading via the pushing force, the pulling force or the pushing force and the pulling force;
• deforming the swage collar to form a swaged collar fixed to the end portion of the turbocharger shaft;
• and
• releasing the pulling and the pushing forces wherein the swaged collar maintains a desired amount of loading, wherein the desired amount of loading couples the compressor wheel to the turbocharger shaft for rotation of the compressor wheel responsive to rotation of the turbocharger shaft.