A target wheel for a camshaft phaser stamped and drawn from sheet metal
stock. The hub region of the target wheel may be drawn such that it
extends through the phaser cover plate and seals directly against the
face of the rotor, allowing a shorter cam bolt and resulting in reduction
in mass and cost of the phaser. Alternatively, a separate hub is formed
and then attached to a simplified stamped and drawn target wheel, or a
target wheel hub is formed integrally with the rotor and extends through
the cover plate to mate with a simplified stamped and drawn target wheel.
Preferably, the hub is formed having a neck extending through a central
opening in the target wheel, which neck is peened over during assembly to
secure the wheel to the hub.